Trouvez votre prochaine offre d’emploi ou de mission freelance DHCP (Dynamic Host Configuration Protocol)

Ce qu’il faut savoir sur DHCP (Dynamic Host Configuration Protocol)

DHCP (Dynamic Host Configuration Protocol) est un protocole réseau qui permet d’attribuer automatiquement des adresses IP et d’autres paramètres réseau aux appareils connectés, comme les ordinateurs, les imprimantes ou les smartphones. Il simplifie la gestion des réseaux en éliminant la nécessité de configurer manuellement chaque appareil. Lorsque un appareil se connecte à un réseau, le serveur DHCP lui assigne une adresse IP unique, ainsi que d'autres informations essentielles, telles que le masque de sous-réseau, la passerelle par défaut et les serveurs DNS. Ces adresses peuvent être attribuées pour une période déterminée (bail) et sont renouvelées automatiquement si nécessaire. Le DHCP est largement utilisé dans les réseaux domestiques, professionnels et les datacenters pour garantir une configuration réseau rapide, flexible et sans conflit d’adresses IP. Il est intégré dans les routeurs et les serveurs, et joue un rôle clé dans la gestion des infrastructures réseau modernes.

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CDI

Offre d'emploiTechnicien support informatique (F/H)

Experis France
Publiée le

25k-28k €
Marseille, Provence-Alpes-Côte d'Azur
Technicien support informatique (F/H) - Marseille 📍 Lieu : Marseille (2ème) 🕒 Contrat : CDI 📅 Disponibilité : Dès que possible Nous recherchons un Technicien Support Informatique Niveau 1 (F/H) pour être le point de contact IT de l'ensemble des utilisateurs présents sur site. Vous serez responsable du support utilisateur, du maintien en conditions opérationnelles du parc informatique et de la gestion quotidienne des environnements systèmes, réseaux et postes de travail. Au cœur des échanges entre les utilisateurs et les équipes IT, vous contribuerez au bon fonctionnement du système d'information et à l'amélioration continue des services. Vos missions principales : Support Utilisateurs - Niveau 1 Prise en charge des demandes et incidents (téléphone, portail, email, sollicitations directes). Diagnostic, résolution des incidents courants (Windows, messagerie, réseau, M365, applications métier). Saisie et suivi des tickets dans l'outil ITSM. Assistance utilisateur avec pédagogie et professionnalisme. Administration & Exploitation quotidienne Opérations simples d'administration : AD/Entra ID, Exchange, Microsoft 365. Installation / déploiement / configuration des postes Windows 11 (dont Intune). Support des salles visioconférences (MTR). Exploitation Systèmes & Réseaux - Niveau 1 Vérification des services essentiels : DHCP, DNS, imprimantes, ressources partagées. Tests de connectivité réseau (IP, Wi-Fi, VPN). Application des bonnes pratiques cybersécurité (MFA, gestion identités…). Gestion du parc & des actifs IT Préparation, installation, suivi du matériel (PC, écrans, smartphones, tablettes). Gestion du cycle de vie des équipements (stock, SAV, recyclage). Mise à jour de l'inventaire matériel et logiciel. Collaboration & Amélioration continue Travail en étroite collaboration avec les équipes N2/N3. Participation aux projets IT et aux évolutions d'infrastructure. Contribution à la base de connaissances.
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CDI

Offre d'emploiIngénieur Réseau Data Center (H/F) - Pré-embauche client final

GROUPE ARTEMYS
Publiée le

42k-48k €
79000, Niort, Nouvelle-Aquitaine
Qui sommes-nous ?Artemys, acteur de la transformation numérique est une entreprise à taille humaine, avec plus de 30 ans d'expérience composée de plusieurs entités, chacune spécialisée dans leur domaine (Système, data, réseaux/sécu…) Ce qui nous distingue vraiment ? Ce n'est pas de dire que nous valorisons nos collaborateurs, c'est de le montrer chaque jour. Chez Artemys, l'humain est au cœur de tout ce que nous faisons. Nos valeurs, concrètes et vécues au quotidien : Convivialité : travailler dans une bonne ambiance, ça change tout Proximité : chaque membre de l'équipe a sa place et sa voix Écoute : vos idées comptent autant que votre travail Arcatem, située dans le 10ᵉ arrondissement, est une entité spécialisée en Sécurité et Réseaux. Forte de 17 ans d'expertise, elle intègre le Groupe en 2017. Elle accompagne les grands comptes clients basés en Ile-de-France dans leurs projets et propose des prestations d'architecture, d'expertise technique et d'ingénierie N3 auprès d'acteurs majeurs dans différents secteurs d'activités. C'est au sein de cette entité qu'évolue une équipe de proximité engagée aux côtés des collaborateurs, composée d'un directeur technique, d'une RRH, ainsi que d'un directeur, M. Boris Gunther, présent depuis le début de l'aventure. Reconnue pour son exigence technique, son haut niveau de certification, et ses valeurs humaines, elle est aujourd'hui un acteur clé sur des solutions leaders comme Cisco, Fortinet, Palo Alto, Check Point, F5 ou encore sur des solutions cloud AZURE et AWS. Votre mission (si vous l'acceptez) : Au sein d'une équipe d'experts Réseaux, vous participerez à la conception, l'exploitation et la sécurisation des infrastructures Datacenter et Réseaux de l'entreprise. À ce titre, vous serez notamment amené à : Assurer l'administration et le maintien en conditions opérationnelles des infrastructures Réseaux LAN et Datacenter Intervenir en support de niveau 3 sur les incidents complexes Participer aux projets d'évolution et de transformation des infrastructures Concevoir et faire évoluer les architectures réseaux Automatiser les tâches d'exploitation et de contrôle Garantir la résilience et la continuité des infrastructures réseaux Réaliser des audits techniques et proposer des plans d'amélioration Assurer une veille technologique continue sur votre domaine d'expertise Rédiger et maintenir la documentation technique Le terrain de jeu ? Réseaux Datacenter SDN Routage statique et dynamique LAN & Wi-Fi d'entreprise Sécurité d'accès réseau (802.1X, Radius) DNS, DHCP, IPAM Virtualisation et environnements de production Automatisation réseau Process ITIL (incidents, changements, demandes) Le profil que nous recherchons : Vous disposez d'une expérience significative sur des environnements Réseaux Datacenter Vous maîtrisez les architectures LAN et les technologies de routage Vous êtes à l'aise avec les problématiques de production et de support de niveau expert Vous avez une appétence pour l'automatisation et l'amélioration continue Vous savez évoluer dans des environnements complexes et exigeants Vous faites preuve d'autonomie, de rigueur et d'un fort esprit d'analyse Vous appréciez le travail en équipe et le partage de connaissances Le process pour nous rejoindre : simple et clair ! Échange RH : On discute de vos motivations et de l'adéquation avec nos valeurs (promis, pas de robotisation ici). Échange opérationnel : Je propose votre candidature au référent (Commercial, SDM, coordinateur…) du compte client, qui échange ensuite avec vous afin de valider votre adéquation avec le besoin. Proposition de mission : Si tout colle, on propose votre CV à notre client ! Ce que notre client vous propose Un poste stratégique au sein d'un acteur reconnu du secteur de l'assurance Jusqu'à 100 jours de télétravail par an Un forfait annuel de 203 jours 13ème mois et prime vacances Participation, intéressement et abondement Mutuelle et prévoyance avantageuses Titres restaurant CESU pour les enfants de moins de 3 ans De réelles perspectives d'évolution professionnelle Conditions : Rémunération : Entre 42 000 et 48 000 € (Selon votre expertise) Localisation : Niort Démarrage : Dès que possible Contrat : CDI en pré-embauche chez notre client final Bienvenue dans l'aventure ARTEMYS Chez nous, chaque talent compte. Peu importe votre âge, vos origines, votre identité, votre religion ou votre orientation : ce qui nous intéresse, c'est vous et ce que vous avez à apporter. On s'engage à répondre à toutes les candidatures sous 72 heures, parce qu'on sait combien l'attente peut être stressante. Et ici, l'inclusion n'est pas qu'un mot : tous nos postes sont ouverts aux personnes en situation de handicap, et on fait tout pour créer un environnement où chacun peut s'épanouir. Prêt, feu, candidatez !
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CDI

Offre d'emploiTechnicien support informatique (F/H)

Experis France
Publiée le

25k-28k €
Marseille, Provence-Alpes-Côte d'Azur
Technicien support informatique (F/H) - Marseille 📍 Lieu : Marseille (2ème) 🕒 Contrat : CDI 📅 Disponibilité : Dès que possible Nous recherchons un Technicien Support Informatique Niveau 1 (F/H) pour être le point de contact IT de l'ensemble des utilisateurs présents sur site. Vous serez responsable du support utilisateur, du maintien en conditions opérationnelles du parc informatique et de la gestion quotidienne des environnements systèmes, réseaux et postes de travail. Au cœur des échanges entre les utilisateurs et les équipes IT, vous contribuerez au bon fonctionnement du système d'information et à l'amélioration continue des services. Vos missions principales : Support Utilisateurs - Niveau 1 Prise en charge des demandes et incidents (téléphone, portail, email, sollicitations directes). Diagnostic, résolution des incidents courants (Windows, messagerie, réseau, M365, applications métier). Saisie et suivi des tickets dans l'outil ITSM. Assistance utilisateur avec pédagogie et professionnalisme. Administration & Exploitation quotidienne Opérations simples d'administration : AD/Entra ID, Exchange, Microsoft 365. Installation / déploiement / configuration des postes Windows 11 (dont Intune). Support des salles visioconférences (MTR). Exploitation Systèmes & Réseaux - Niveau 1 Vérification des services essentiels : DHCP, DNS, imprimantes, ressources partagées. Tests de connectivité réseau (IP, Wi-Fi, VPN). Application des bonnes pratiques cybersécurité (MFA, gestion identités…). Gestion du parc & des actifs IT Préparation, installation, suivi du matériel (PC, écrans, smartphones, tablettes). Gestion du cycle de vie des équipements (stock, SAV, recyclage). Mise à jour de l'inventaire matériel et logiciel. Collaboration & Amélioration continue Travail en étroite collaboration avec les équipes N2/N3. Participation aux projets IT et aux évolutions d'infrastructure. Contribution à la base de connaissances.
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CDI

Offre d'emploiSenior Azure Cloud Infrastructure Analyst

Nexus Jobs Limited
Publiée le

Trumbull, Connecticut, États-Unis d'Amérique
Senior Azure Cloud Infrastructure Analyst The Senior Azure Cloud Infrastructure Analyst is a hands-on role planning and managing Azure cloud infrastructure delivery, including daily management, DevOps, capacity planning, and participating in defining the company's global infrastructure architecture. The Senior Analyst will ensure the quality and timely delivery of technology efforts in support of strategic infrastructure projects and works closely with other teams to define infrastructure requirements to support applications, security, and compliance initiatives. The Senior Azure Cloud Infrastructure Analyst works with different teams to design and implement cloud solutions that fit organizational requirements. This individual is an expert in Azure DevOps and Azure infrastructure and security configurations, recommends standards and security requirements that match written information security policy. Prior experience in an international enterprise environment is essential. Responsibilities: Collaborate with IT teams for input and operational requirements to design and implement overall cloud infrastructure and security strategy. Coordinate and lead infrastructure\security initiatives in the Azure cloud. Serve as the technical lead in Azure cloud DR and recovery strategies that align with information security policies. Develops and implements backup and recovery strategies to support data retention requirements. Evaluates and designs highly available, scalable, and redundant applications in the Azure cloud. Coordinates with cross-functional teams to support development, code promotion, continuous improvement following DevOps / DevSecOps best practices. Participate in the development and testing of an incident response planfor incidents that affect the cloud infrastructure. Ensure infrastructure is maintained and security is designed for every deployment. Manages projects to ensure that the delivery is on-time, within budget, and adopted to meet the company's information protection requirements. Actively supports the organization's cloud initiatives and responds to business requirements while achieving SLAs in place to support the organization's needs. Adhere to applicable change management policy and procedure. Qualifications: Bachelor's degree required. Candidates must possess significant analytical skills, which evolved from early academic training in Networking, Information Systems, Computer Science, or similar discipline. Minimum of 5 years' experience in a variety of infrastructure technologies. Ability to lead multi-disciplined teams when conducting incident root cause analysis Serve as the technical expert in the Azure cloud. Proficient in continuous integration, continuous delivery concepts (DevOps), with DevSecOps highly desirable. Desired Qualifications: Any Azure, AWS, GCP, Nutanix, Meraki, Cisco, or security certifications Knowledge and experience with Microsoft Office and Visio Knowledge of WAN technologies, including MPLS, SD-WAN Knowledge of cloud-provided infrastructure (AWS, GCP) Prior experience implementing/maintaining Cisco ELA products including DNA, Firepower, ISE Management console, Umbrella, AMP, Stealth watch, as well as Splunk, SolarWinds, Varonis, and Darktrace Project management skills are highly desirable Proficiency in hybrid cloud, virtualization, Server OS, SAN, SMTP, email relay, email security, Active Directory, Group Policy, DNS, DHCP Working knowledge of Cisco network switches, routers, firewalls and VPN, DLP, antivirus, IDS/IPS, SIEM, SQL VDI, and Security concepts ITIL Foundation Certification Previous experience in a HIPAA/FDA regulated environment The role will be based in Trumbull CT USA. The salary for this position is in the range $120K - $135K. Please do send your CV to us in Word format along with your salary and availability.
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CDI

Offre d'emploiIT Support Technician

Nexus Jobs Limited
Publiée le

£28k-30k
Milton Keynes, Angleterre, Royaume-Uni
IT Support Technician Purpose The role of IT Support Technician will lead and manage all day-to-day IT 2 and 3 line support activities for Schools. The IT Support Technician will liaise with School staff, the IT Service Desk and other 3 line support teams to identify, prioritise, own and resolve all IT support and service requests. The IT Support Technician will work closely with the Projects teams to assist with the seamless delivery of technology transition projects This position is a UK role and will be required to support other schools/sites as requested by the UK Service Delivery Manager. Key Responsibilities Provide 2 and 3 line support to UK School staff and students Support Transformation Projects Work alongside and support strategic technical delivery and IT Solutions Strategy Carry out routine BAU maintenance of all computer hardware and network services to maintain agreed availability. Respond to and resolve IT faults and requests through onsite visits and remote support tools to agreed service levels. Install and configure approved computer hardware and licensed software, following agreed policies and procedures. Maintain site documentation, including hardware and software inventories, to ensure accuracy of information, legal and financial compliance. Manage staff and student user accounts following agreed policies and procedures. Monitor and maintain server back-ups to ensure system and user data is protected and secure. Monitor IT (physical and network) security and report any risks or incidents to School Head teachers, IT Manager Any other reasonably requested duties Person Specification Exceptional customer service and communication skills, including written and verbal. Excellent interpersonal skills including communicating effectively and professionally with people at all levels of the organization. Effective communication skills in a technical respect with other IT professionals, and in non-technical terms with other colleagues Self-motivation, effective time management and the ability to work unsupervised. Must be able to use initiative and work under pressure, consistently employing a customer centric approach to resolving all IT issues. Demonstrable methodical problem solving, excellent analytical skills and creative thinking. Able to demonstrate good judgement and decision-making skills in resolving issues in challenging situations, knowing when to sign post, escalate and resolve issues. Experience in establishing new processes and procedures as well as following those already in place and always looking for improvements. A desire to, and demonstrable experience of supporting teaching and learning Project team member skills Effective engagement with IT service partners and 3rd parties A clean UK driving license. Technical Skills Windows Server 2012/2016 Windows 10 Active Directory support Office365 Microsoft Office 2013/2016 suites LAN & WAN technologies and protocols, including VLAN, wireless, DNS and DHCP. SIMS.net and SOLUS3 support AV and interactive boards and screens Shared printing solutions Desktop/Server Hardware support and troubleshooting Apple device management and support Experience Experience of working in a Service Desk environment (2nd - 3rd line support role) Experience of working in the education or similar sector is preferable. ITIL preferred but not essential. Key Competencies Role Specific Work Planning and Scheduling Time Management Listening and Organisation Training, Mentoring and Delegating Problem Identification and Solution Process Improvement Safeguarding Responsibilities To comply with safeguarding policies, procedures and code of conduct To demonstrate a personal commitment to safeguarding and student/colleague wellbeing To ensure that any safeguarding concerns or incidents are reported appropriately in line with policy. To engage in safeguarding training when required Remuneration Competitive salary Contributory pension scheme Private healthcare Life assurance School fee discount Professional development 25 days holiday (pro-rata'd to part time) You will be based between 2 schools in Milton Keynes. The salary will be circa £28K - £30K + Benefits. Please do send your CV to us in Word format along with your salary and notice period.
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CDI

Offre d'emploiAWS Cloud Infrastructure Analyst

Nexus Jobs Limited
Publiée le

US$90k-110k
Trumbull, Connecticut, États-Unis d'Amérique
AWS Cloud Infrastructure Analyst The AWS Cloud Infrastructure Analyst is a hands-on role planning and managing AWS cloud infrastructure delivery, including daily management, capacity planning, and participating in defining the Company's global infrastructure architecture. The Analyst will ensure the quality and timely delivery of technology efforts to support strategic infrastructure projects and works closely with other teams to define infrastructure requirements to support applications, security, and compliance initiatives. The AWS Cloud Infrastructure Analyst works with different teams to design and implement cloud solutions that fit organizational requirements. As an expert in AWS infrastructure and security configurations, recommends standards and security requirements that match written information security policy. Prior experience in an international enterprise environment is essential . Responsibilities: Collaborate with IT teams for input and operational requirements to design and implement overall cloud infrastructure and security strategy. Coordinate and lead infrastructure\security initiatives in the AWS cloud. Serve as the technical lead in AWS cloud DR and recovery strategies that align with information security policies. Develops and implements backup and recovery strategies to support data retention requirements. Evaluates and designs highly available, scalable, and redundant applications in the AWS cloud. Participate in the development and testing of an incident response plan for incidents that affect the cloud infrastructure. Ensure infrastructure is maintained and security is designed for every deployment. Manages projects to ensure that the delivery is on-time, within budget, and adopted to meet the company's information protection requirements. Actively supports the organization's cloud initiatives and responds to business requirements while achieving SLAs in place to support the organization's needs. Adhere to applicable change management policy and procedure. Qualifications: Bachelor's degree required. Candidates must possess significant analytical skills, which evolved from early academic training in Networking, Information Systems, Computer Science, or similar discipline. Minimum of 5 years' experience in a variety of infrastructure technologies. Ability to lead multi-disciplined teams when conducting incident root cause analysis. Serve as the technical expert in the AWS cloud. Desired Qualifications: Any Azure, AWS, GCP, Nutanix, Meraki, Cisco, or security certifications. Knowledge and experience with Microsoft Office and Visio Knowledge of WAN technologies, including MPLS, SD-WAN Knowledge of cloud-provided infrastructure (AWS, GCP) Prior experience implementing/maintaining Cisco ELA products including DNA, Firepower, ISE Management console, Umbrella, AMP, Stealth watch, as well as Splunk, SolarWinds, Varonis, and Darktrace Project management skills are highly desirable Proficiency in hybrid cloud, virtualization, Server OS, SAN, SMTP, email relay, email security, Active Directory, Group Policy, DNS, DHCP Working knowledge of Cisco network switches, routers, firewalls and VPN, DLP, antivirus, IDS/IPS, SIEM, SQL VDI, and Security concepts ITIL Foundation Certification Proficient in continuous integration, continuous delivery concepts (DevOps), with DevSecOps highly desirable. Previous experience in a HIPAA/FDA regulated environment Competencies: To perform the job successfully, an individual should demonstrate the following behaviors: Strong English oral and written communication skills Motivated and curious, willing to ask questions, research issues, and take on challenging projects/assignments; creative, brings innovative ideas to the table, exhibits self-confidence. Possesses the ability to organize and follow-through on multiple tasks. Recognizes and attends to vital details with accuracy and efficiency. Effectively prioritizes the work of staff members. Works to complete goals, tasks, and plans. Anticipates potential problems and analyzes alternative solutions. Develops/ maintains effective working relationships by listening attentively to others; communicates ideas clearly (written & verbal) while relating to people in an open/ sincere manner and participating effectively in meetings. You will also help find solutions, identify problems, communicate appropriately with the supervisor, and interact with co-workers. Able to maintain a calm and reliable demeanor in the face of challenges. Diagnoses problems efficiently, gather sufficient input before making decisions or plans, makes timely decisions, quickly determines sources of problems, identifies information needed to solve problems, analyzes and communicates issues with effective alternative solutions to the team. Sensitive & responsive to internal customer needs, demonstrate customer service skills, maintains a positive attitude, is willing to listen to customer problems, seeks solutions, and stays in tune with customers' changing needs. The role will be based in Trumbull, Connecticut USA. The salary for this role will be in the range $90K - $110K. Please do send your CV to us in Word format along with salary and availability.
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Freelance

Mission freelanceExpert N3 Téléphonie Enterprise et Teams Phone (H/F)

Insitoo Freelances
Publiée le
Wi-Fi

2 ans
100-550 €
Lille, Hauts-de-France
Basée à Lille, Lyon, Nantes, Grenoble, Marseille, Paris et Bruxelles, Insitoo Freelances est une société du groupe Insitoo, spécialisée dans le placement et le sourcing des Freelances IT et Métier. Depuis 2007, Insitoo Freelances a su s'imposer comme une référence en matière de freelancing par son expertise dans l'IT et ses valeurs de transparence et de proximité. Actuellement, afin de répondre aux besoins de nos clients, nous recherchons un Expert N3 Téléphonie Enterprise et Teams Phone (H/F) à Lille, France. Contexte : Dans un contexte à dimension internationale, couvrant les magasins, les sites centraux et la logistique, le ou la consultant(e) interviendra au sein de l'équipe EUCD pour piloter, améliorer et gérer les services de téléphonie. Les missions attendues par le Expert N3 Téléphonie Enterprise et Teams Phone (H/F) : Dans le cadre du projet de remplacement des services de téléphonie existants, il ou elle pilotera le déploiement des nouveaux services de téléphonie, en coordination avec le partenaire retenu et les correspondants des sites. Le service fonctionne dans un format Produit combinant le maintien en condition opérationnelle (Run / MCO) et la gestion des projets ou évolutions (Build). Le consultant devra assurer une expertise technique et fonctionnelle, contribuer à la structuration des processus, piloter les prestataires et accompagner les métiers dans l'usage des solutions. Le service adopte une approche "You build it, you run it" : les équipes sont donc responsables à la fois de la conception, du déploiement et du maintien en condition opérationnelle des solutions. Rattachement au Responsable de service EUCD, travail en coordination avec les équipes Téléphonies, Réseau, Support et partenaires. Accompagne le Product owner du périmètre Téléphonie. Périmètre technique • Téléphonie IP / Softphonie (Micollab, Mivoice, PABX/IPBX, SIP, Teams Phone) — maîtrise attendue • Réseaux WAN, LAN et Wi-Fi (QoS, LAN/WAN, WIFI,DHCP,DNS,Vlan Voice) — maîtrise attendue • Teams, Microsoft Teams Phone, Teams Admin Center – maitrise attendue • Connaissance d'une solution de gestion des terminaux mobiles, idéalement Microsoft Intune, Workspace One ainsi que des écosystèmes Apple et Android. Principaux challenges • Atteindre les niveaux de service attendus. • Garantir le bon déroulement de l'activité opérationnelle. • Gérer des missions liées à la conduite de projets. • Contribuer à l'optimisation continue des services de téléphonie. Missions principales • S'approprier les projets et comprendre leurs contraintes. • Organiser et planifier leur mise en œuvre en s'appuyant sur des ressources internes et/ou externes. • Spécifier et coordonner les tâches de configuration avec l'équipe déploiement. • S'assurer du bon déroulement des mises en production, du reporting vers le client et de la rédaction de la documentation d'exploitation. • Participer à la définition et à l'amélioration d'un modèle self-service permettant de simplifier les demandes, accélérer les traitements et réduire la dépendance aux équipes support. • Coordonner les partenaires, opérateurs, équipes réseau, équipes de déploiement et correspondants locaux. • Prendre en charge les incidents complexes et les escalades N3 • Analyse les incidents récurrents N2 et N3 afin de mettre en œuvre des actions permettant leur automatisation, leur simplification ou leur prise en charge par le N1. • Participer aux cellules de crise
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Freelance
CDI

Offre d'emploiIngénieur Audit de Performance Réseau & Applicatif H/F

METSYS
Publiée le
Réseaux

1 an
45k-55k €
400-550 €
Montreuil, Île-de-France
Dans le cadre du renforcement d'une équipe spécialisée en métrologie et performance des systèmes d'information, nous recherchons un Ingénieur Audit de Performance Réseau & Applicatif. Vous intégrerez une équipe d'experts en charge de l'analyse, du diagnostic et de l'optimisation des performances des infrastructures réseau et des applications pour des clients internes internationaux (France, Belgique, Italie). Votre mission consistera à identifier les causes de dégradation de performance, analyser les flux réseau et proposer des recommandations techniques afin d'améliorer l'expérience utilisateur et la qualité de service. Vos missions : Réalisation des audits de performance Analyser les besoins d'audit exprimés par les clients internes. Recueillir les informations auprès des équipes de production, d'exploitation et des acteurs techniques. Définir la stratégie d'audit adaptée au contexte. Piloter les plans d'actions associés. Collecter les métriques via les outils de supervision et d'analyse. Réaliser l'analyse des traces réseau et applicatives. Identifier les causes racines des incidents ou dégradations observées. Rédiger et présenter les rapports d'audit ainsi que les recommandations techniques. Typologie des audits Vous interviendrez sur différents types d'audits : Curatif : analyse des incidents et problématiques de lenteur. Préventif : évaluation d'impact avant mise en production. Expertise : études techniques et états des lieux hors incident. Monitoring : surveillance ponctuelle ou permanente d'applications critiques. Administration des outils de l'équipe Installer, administrer et maintenir les solutions de métrologie. Assurer le maintien en condition opérationnelle des plateformes et des rapports développés. Gérer les actifs techniques et leur mise à jour dans les référentiels. Assurer les échanges techniques avec les éditeurs et fournisseurs. Environnement technique Réseaux LAN / WAN Routing & Switching Firewall Load Balancer Services réseaux (DNS, DHCP, Proxy, VPN) Analyse et métrologie Netscout Opnet 5Views Wireshark Analyse de flux et captures réseau Protocoles IP TCP UDP HTTP / HTTPS Performance Applicative APM (Application Performance Management) NPM (Network Performance Management)
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CDI

Offre d'emploiSenior IT Infrastructure & Systems Manager

Nexus Jobs Limited
Publiée le

£55k-60k
Grand Londres, Royaume-Uni
Senior IT Infrastructure & Systems Manager We are seeking an experienced and highly motivated Senior IT Infrastructure Manager with at least 7 to 10 years experience to oversee, manage, and continuously improve the organization's IT infrastructure, enterprise systems, network environment, and end-user computing services. The successful candidate will ensure the availability, security, performance, and resilience of critical business systems while leading technical teams and supporting key stakeholders across the organization. This role requires a strong blend of technical expertise, leadership capability, operational excellence, and stakeholder management skills, within a complex enterprise environment that includes financial, trading, and treasury systems. Infrastructure & Systems Management Administer, maintain, and optimize Windows and Linux server environments. Manage VMware virtualized infrastructure (vSphere 8 and above). Oversee enterprise backup and disaster recovery solutions using Veeam Backup & Replication. Manage Veeam ONE monitoring and Veeam Recovery Orchestrator (VRO) environments. Administer endpoint security and encryption solutions, including Symantec Endpoint Protection (SEP) and Symantec Endpoint Encryption (SEE). Support endpoint DLP, SIEM, and security monitoring tools (e.g., Splunk, Tenable). Manage patching processes using ManageEngine Patch Manager Plus. Support Microsoft 365 services and related cloud technologies. In depth understanding of Cyber security Monitor system performance, capacity, availability, and infrastructure health. Ensure compliance with IT governance, security policies, and operational standards. End-User Computing Support Provide advanced desktop, laptop, printer, Mobile device (iOS) and branch office IT support. Deliver AV support for meeting rooms, conferencing, presentations, and collaboration systems. Manage OS deployment, imaging, image creation, maintenance, and software packaging. Administer Active Directory (AD), Group Policy Objects (GPOs) and user provisioning and NTFS permissions. Support Microsoft 365 applications including Outlook, Teams, OneDrive, and SharePoint. Resolve technical incidents and service requests in line with agreed SLAs. Enterprise Applications & Financial Systems Support Support and administer business-critical applications, including: Bloomberg FXT and Refinitiv Eikon, Murex Treasury System, SWIFT Alliance Access (SAA), 1AML, SIBS, GFMS, COP Support enterprise file synchronization and replication solutions (e.g., Syncovery, other SFTP). Networking Configure and support Cisco switches and routers. Administer FortiGate firewall environments. Strong network fundamentals: DNS, DHCP, TCP/IP, LAN/WAN, Routing and connectivity troubleshooting. Monitor network performance, availability, and security posture. Security & Endpoint Management Support vulnerability management using tools such as Tenable. Manage security monitoring and log analysis tools (e.g., Splunk). Perform SSL/TLS certificate lifecycle management using OpenSSL. Create and manage CSRs, certificate chains, and private keys. Ensure adherence to cybersecurity policies, standards, and regulatory requirements. Support physical access control systems (e.g., Paxton) Governance, Documentation & Process Improvement Develop, maintain, and enforce IT policies, standards, and operational procedures. Produce system architecture diagrams, technical documentation, SOP's, and performance reports. Identify and drive opportunities for automation and service improvement. Support technology planning, infrastructure modernization, and transformation initiatives. Operating Systems Windows 11 Windows Server 2019/2022 (or equivalent enterprise environments) Red Hat Linux Infrastructure & Virtualization VMware vSphere / vCenter (v8.0.3 and above) Veeam Backup & Replication Veeam ONE, VRO Microsoft Office 365 ManageEngine Patch Manager Plus SAAS solutions SQL Server Security Symantec Endpoint Protection (SEP) Symantec Endpoint Encryption (SEE) SentinelOne – EDR/ XDR Endpoint DLP solutions Firewall administration Vulnerability management tools (e.g., Tenable) SIEM tools (e.g., Splunk) Networking Cisco Switches and Routers FortiGate Firewalls LAN/WAN networking and routing Hardware & Storage Dell PowerEdge Servers Dell PowerVault SAN Storage Technical Competencies Data analysis and operational reporting Desktop and laptop support Infrastructure monitoring and performance management Certificate lifecycle management (SSL/TLS) Windows imaging and deployment, GPO, NTFS PowerShell scripting SQL Server administration Understanding of software development lifecycle (SDLC) and deployment processes Architecture review and systems optimization Asset management 7+ years of experience in enterprise IT infrastructure and systems administration. Experience within financial services, banking, trading, or treasury environments. Proven experience managing mission-critical infrastructure and applications. Experience operating within regulated and security-focused environments. Able to provide support to VIP stakeholders This is a hybrid role 3 days in the office in Central London. Salary for this role will be in the range £55K - £60K. Do send your CV to us in Word format along with your salary and availability.
Voir cette offre
CDI

Offre d'emploiSenior IT Infrastructure & Systems Lead

Nexus Jobs Limited
Publiée le

£70k-75k
Grand Londres, Royaume-Uni
Senior IT Infrastructure & Systems Lead Our Client a bank, in Central London are looking for an experienced IT Infrastructure professional who is ideally looking for their next challenge in a dynamic and regulated financial services environment. We are seeking a highly skilled Senior IT Infrastructure Officer to lead the management, security, and continuous improvement of our enterprise IT infrastructure. The Senior IT Infrastructure Officer will be playing a key role in ensuring the availability, resilience, and performance of critical systems while supporting technologies across servers, networks, cloud services, cybersecurity, and business-critical financial applications. The candidate must have strong technical expertise in Windows/Linux, VMware, Microsoft 365, networking, cybersecurity, and infrastructure management who also enjoys solving complex challenges and driving operational excellence. Must have 7 years' experience in enterprise infrastructure, ideally within banking or financial services, and be passionate about delivering secure, reliable IT services.. The role will be Monday to Friday, 9:30am to 5:30pm and reporting into the Head of IT & Data. Due to the nature of the role, the individual is expected to work in our offices, 5 days per week, during their probationary period This role is totally hands-on. Role Description The Senior IT Infrastructure & Systems Lead is a full-time hybrid role based in London, with flexibility for some work-from-home arrangements. This role is responsible for overseeing the day-to-day operation, maintenance, and improvement of the company's IT infrastructure, including networks, servers, and core systems. The person in this role will lead and mentor technical staff, manage system performance and availability, and coordinate responses to incidents and service requests. Typical tasks include monitoring network and system health, implementing security measures, resolving complex technical issues, planning upgrades, and collaborating with stakeholders to align technology solutions with business needs. The role also involves vendor management, documentation of infrastructure and procedures, and contributing to IT strategy and roadmap decisions. Qualifications Candidates should possess strong skills in Network Administration and Information Technology for managing and optimizing infrastructure and systems. Candidates should possess solid Technical Support and Troubleshooting skills to diagnose, resolve, and prevent complex IT issues. Candidates should possess expertise in Network Security to implement, monitor, and improve security controls and practices. Extensive experience in leading IT infrastructure projects, including planning, implementation, and migration activities. Proven ability to manage and mentor IT teams, with strong communication and stakeholder management skills. Experience with server and cloud technologies, virtualization, backup and recovery, and IT monitoring tools. Relevant professional certifications (e.g., CompTIA Network+, CCNA, MCSE, or similar) are beneficial. Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent practical experience. Infrastructure & Systems Management · Administer, maintain, and optimize Windows and Linux server environments. · Manage VMware virtualized infrastructure (vSphere 8 and above). · Oversee enterprise backup and disaster recovery solutions using Veeam Backup & Replication. · Manage Veeam ONE monitoring and Veeam Recovery Orchestrator (VRO) environments. · Administer endpoint security and encryption solutions, including Symantec Endpoint Protection (SEP) and Symantec Endpoint Encryption (SEE). · Support endpoint DLP, SIEM, and security monitoring tools (e.g., Splunk, Tenable). · Manage patching processes using ManageEngine Patch Manager Plus. · Support Microsoft 365 services and related cloud technologies. · In depth understanding of Cyber security · Monitor system performance, capacity, availability, and infrastructure health. · Ensure compliance with IT governance, security policies, and operational standards. End-User Computing & Branch Support · Provide advanced desktop, laptop, printer, Mobile device (iOS) and branch office IT support. · Deliver AV support for meeting rooms, conferencing, presentations, and collaboration systems. · Manage OS deployment, imaging, image creation, maintenance, and software packaging. · Administer Active Directory (AD), Group Policy Objects (GPOs) and user provisioning and NTFS permissions. · Support Microsoft 365 applications including Outlook, Teams, OneDrive, and SharePoint. · Resolve technical incidents and service requests in line with agreed SLAs. Enterprise Applications & Financial Systems Support · Support and administer business-critical applications, including: · Bloomberg FXT and Refinitiv Eikon, Murex Treasury System, SWIFT Alliance Access (SAA), 1AML, SIBS, GFMS, COP · Support enterprise file synchronization and replication solutions (e.g., Syncovery, other SFTP). Networking • Configure and support Cisco switches and routers. • Administer FortiGate firewall environments. • Strong network fundamentals: DNS, DHCP, TCP/IP, LAN/WAN, Routing and connectivity troubleshooting. Monitor network performance, availability, and security posture. Security & Endpoint Management · Support vulnerability management using tools such as Tenable. · Manage security monitoring and log analysis tools (e.g., Splunk). · Perform SSL/TLS certificate lifecycle management using OpenSSL. · Create and manage CSRs, certificate chains, and private keys. · Ensure adherence to cybersecurity policies, standards, and regulatory requirements. · Support physical access control systems (e.g., Paxton) Operating Systems · Windows 11 · Windows Server 2019/2022 (or equivalent enterprise environments) · Red Hat Linux Infrastructure & Virtualization · VMware vSphere / vCenter (v8.0.3 and above) · Veeam Backup & Replication · Veeam ONE, VRO · Microsoft Office 365 · ManageEngine Patch Manager Plus · SAAS solutions · SQL Server Security · Symantec Endpoint Protection (SEP) · Symantec Endpoint Encryption (SEE) · SentinelOne – EDR/ XDR · Endpoint DLP solutions · Firewall administration · Vulnerability management tools (e.g., Tenable) · SIEM tools (e.g., Splunk) Networking · Cisco Switches and Routers · FortiGate Firewalls · LAN/WAN networking and routing Hardware & Storage · Dell PowerEdge Servers · Dell PowerVault SAN Storage Education Bachelor or Master's degree or professional qualification in relevant discipline (IT/Information Systems/Computer Science/Technology/Programming/Information Science/System Engineering/Computing) The role is based in Central London and initially will be be 5 days per week in the office. This is a 12 month FTC position. The salary for the role will be circa £70K - £75K. Do send your CV to us in Word format along with your salary and availability.
Voir cette offre
CDI

Offre d'emploiSenior IT Infrastructure & Systems Lead

Nexus Jobs Limited
Publiée le

£65k-75k
Grand Londres, Royaume-Uni
Senior IT Infrastructure & Systems Lead Our Client a bank, in Central London are looking for an experienced IT Infrastructure professional who is ideally looking for their next challenge in a dynamic and regulated financial services environment. We are seeking a highly skilled Senior IT Infrastructure Officer to lead the management, security, and continuous improvement of our enterprise IT infrastructure. The Senior IT Infrastructure Officer will be playing a key role in ensuring the availability, resilience, and performance of critical systems while supporting technologies across servers, networks, cloud services, cybersecurity, and business-critical financial applications. The candidate must have strong technical expertise in Windows/Linux, VMware, Microsoft 365, networking, cybersecurity, and infrastructure management who also enjoys solving complex challenges and driving operational excellence. Must have 7 years' experience in enterprise infrastructure, ideally within banking or financial services, and be passionate about delivering secure, reliable IT services.. The role will be Monday to Friday, 9:30am to 5:30pm and reporting into the Head of IT & Data. Due to the nature of the role, the individual is expected to work in our offices, 5 days per week, during their probationary period This role is totally hands-on. Role Description The Senior IT Infrastructure & Systems Lead is a full-time hybrid role based in London, with flexibility for some work-from-home arrangements. This role is responsible for overseeing the day-to-day operation, maintenance, and improvement of the company's IT infrastructure, including networks, servers, and core systems. The person in this role will lead and mentor technical staff, manage system performance and availability, and coordinate responses to incidents and service requests. Typical tasks include monitoring network and system health, implementing security measures, resolving complex technical issues, planning upgrades, and collaborating with stakeholders to align technology solutions with business needs. The role also involves vendor management, documentation of infrastructure and procedures, and contributing to IT strategy and roadmap decisions. Qualifications Candidates should possess strong skills in Network Administration and Information Technology for managing and optimizing infrastructure and systems. Candidates should possess solid Technical Support and Troubleshooting skills to diagnose, resolve, and prevent complex IT issues. Candidates should possess expertise in Network Security to implement, monitor, and improve security controls and practices. Extensive experience in leading IT infrastructure projects, including planning, implementation, and migration activities. Proven ability to manage and mentor IT teams, with strong communication and stakeholder management skills. Experience with server and cloud technologies, virtualization, backup and recovery, and IT monitoring tools. Relevant professional certifications (e.g., CompTIA Network+, CCNA, MCSE, or similar) are beneficial. Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent practical experience. Infrastructure & Systems Management · Administer, maintain, and optimize Windows and Linux server environments. · Manage VMware virtualized infrastructure (vSphere 8 and above). · Oversee enterprise backup and disaster recovery solutions using Veeam Backup & Replication. · Manage Veeam ONE monitoring and Veeam Recovery Orchestrator (VRO) environments. · Administer endpoint security and encryption solutions, including Symantec Endpoint Protection (SEP) and Symantec Endpoint Encryption (SEE). · Support endpoint DLP, SIEM, and security monitoring tools (e.g., Splunk, Tenable). · Manage patching processes using ManageEngine Patch Manager Plus. · Support Microsoft 365 services and related cloud technologies. · In depth understanding of Cyber security · Monitor system performance, capacity, availability, and infrastructure health. · Ensure compliance with IT governance, security policies, and operational standards. End-User Computing & Branch Support · Provide advanced desktop, laptop, printer, Mobile device (iOS) and branch office IT support. · Deliver AV support for meeting rooms, conferencing, presentations, and collaboration systems. · Manage OS deployment, imaging, image creation, maintenance, and software packaging. · Administer Active Directory (AD), Group Policy Objects (GPOs) and user provisioning and NTFS permissions. · Support Microsoft 365 applications including Outlook, Teams, OneDrive, and SharePoint. · Resolve technical incidents and service requests in line with agreed SLAs. Enterprise Applications & Financial Systems Support · Support and administer business-critical applications, including: · Bloomberg FXT and Refinitiv Eikon, Murex Treasury System, SWIFT Alliance Access (SAA), 1AML, SIBS, GFMS, COP · Support enterprise file synchronization and replication solutions (e.g., Syncovery, other SFTP). Networking • Configure and support Cisco switches and routers. • Administer FortiGate firewall environments. • Strong network fundamentals: DNS, DHCP, TCP/IP, LAN/WAN, Routing and connectivity troubleshooting. Monitor network performance, availability, and security posture. Security & Endpoint Management · Support vulnerability management using tools such as Tenable. · Manage security monitoring and log analysis tools (e.g., Splunk). · Perform SSL/TLS certificate lifecycle management using OpenSSL. · Create and manage CSRs, certificate chains, and private keys. · Ensure adherence to cybersecurity policies, standards, and regulatory requirements. · Support physical access control systems (e.g., Paxton) Operating Systems · Windows 11 · Windows Server 2019/2022 (or equivalent enterprise environments) · Red Hat Linux Infrastructure & Virtualization · VMware vSphere / vCenter (v8.0.3 and above) · Veeam Backup & Replication · Veeam ONE, VRO · Microsoft Office 365 · ManageEngine Patch Manager Plus · SAAS solutions · SQL Server Security · Symantec Endpoint Protection (SEP) · Symantec Endpoint Encryption (SEE) · SentinelOne – EDR/ XDR · Endpoint DLP solutions · Firewall administration · Vulnerability management tools (e.g., Tenable) · SIEM tools (e.g., Splunk) Networking · Cisco Switches and Routers · FortiGate Firewalls · LAN/WAN networking and routing Hardware & Storage · Dell PowerEdge Servers · Dell PowerVault SAN Storage Education Bachelor or Master's degree or professional qualification in relevant discipline (IT/Information Systems/Computer Science/Technology/Programming/Information Science/System Engineering/Computing) The role is based in Central London and initially will be be 5 days per week in the office. This is a 12 month FTC position. The salary for the role will be circa £70K - £75K. Do send your CV to us in Word format along with your salary and availability.
Voir cette offre

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Les métiers et les missions en freelance pour DHCP (Dynamic Host Configuration Protocol)

Administrateur·rice réseaux

L'Administrateur·rice réseaux configure et maintient les serveurs DHCP pour automatiser l’attribution des adresses IP dans les réseaux, assurant leur bon fonctionnement et leur scalabilité.

Ingénieur·e systèmes & réseaux

L'Ingénieur·e systèmes & réseaux implémente et optimise les services DHCP dans les infrastructures réseau, en veillant à la compatibilité avec d'autres protocoles réseau comme DNS et NAT.

Responsable systèmes et réseaux

Le/ La Responsable systèmes et réseaux supervise les infrastructures réseau, y compris la gestion des services DHCP pour garantir une connectivité fluide et fiable.

Technicien·ne réseau

Le/ La Technicien·ne réseau gère la configuration et le dépannage des serveurs DHCP pour résoudre rapidement les problèmes liés à l’adressage IP dans les réseaux locaux.

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