Trouvez votre prochaine offre d’emploi ou de mission freelance MPLS (MultiProtocol Label Switching)

Consultant Expert Réseaux & Sécurité SeniorContexte de la mission Dans le cadre du renforcement d'une équipe Infrastructure, nous recherchons un Expert Réseaux & Sécurité Senior capable d'intervenir sur des environnements complexes et critiques. Le consultant participera aux activités d'exploitation, d'évolution et de sécurisation des infrastructures réseau tout en accompagnant les projets techniques de l'organisation. Missions principalesAssurer l'administration et l'exploitation des infrastructures Réseaux & Sécurité. Participer aux projets d'évolution et de transformation des architectures. Réaliser les études techniques et proposer des solutions adaptées aux besoins métiers. Assurer le maintien en conditions opérationnelles et de sécurité des plateformes. Traiter les incidents complexes et assurer le support de niveau 3. Produire la documentation technique et les procédures d'exploitation. Participer aux réunions techniques et assurer le reporting des activités. Contribuer à l'amélioration continue des infrastructures et des processus. Environnement techniqueRéseauRoutage et commutation IP DNS, DHCP, NTP Radius, 802.1X Cisco ISE IPAM ProtocolesOSPF BGP MPLS QoS NAT VRF VPN L2/L3 Technologies et équipementsCisco IOS Cisco ACI Juniper MX / SRX Palo Alto Fortinet F5 Load Balancer Cisco IronPort ESA Pulse Secure / Ivanti Trellix (McAfee) CyberArk Conjur

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 Technique WiFi Senior Cisco / Huawei (H/F) à Lyon, France. Contexte : Pour le compte d'un grand groupe français d'envergure nationale, nous recherchons un(e) Expert(e) Technique WiFi capable d'intervenir en totale autonomie. Cette entité assure l'exploitation, le maintien en conditions opérationnelles (MCO) et la modernisation d'une infrastructure sans fil d'envergure nationale couvrant des gares ainsi que des sites tertiaires et industriels complexes. Vous intégrerez une équipe structurée de 12 personnes, composée de chefs de projet MOA, de chargés d'études, d'intégrateurs, d'experts et d'un service manager. Les missions attendues par le Expert Technique WiFi Senior Cisco / Huawei (H/F) : Ingénierie & Architecture : Réaliser les études de réseau sans fil, rédiger les livrables associés (DAT, DEX) et intégrer les nouveaux matériels dans l'architecture centralisée et l'écosystème existant (LAN/WAN, SD-WAN, MPLS). Configuration & Déploiement : Installer et paramétrer les contrôleurs (Cisco WLC/Catalyst Center, Huawei). Configurer les SSID, QoS, VLANs, tunnels, et piloter le déploiement des AP (bandes 2,4/5/6 GHz, WiFi 6/7) ainsi que le roaming (802.11r/k/v). Administration & MCO : Assurer l'exploitation des plateformes, surveiller les performances radio (débits, interférences), résoudre les incidents N2/3 (captures 802.11, RADIUS) et piloter le cycle de vie des équipements (firmwares, capacity planning, migrations). Sécurité & Durcissement : Déployer l'authentification sécurisée (802.1X/EAP, RADIUS, certificats) et la segmentation (VLANs, DMZ). Durcir les configurations selon le référentiel ANSSI, détecter les Rogue AP et traiter les audits. Supervision & Automatisation : Exploiter les outils de supervision (Cisco Catalyst Center, Huawei iMaster NCE), concevoir les tableaux de bord de suivi de l'expérience utilisateur et industrialiser les déploiements via des templates ou scripts. Veille & Relations : Suivre les évolutions standards (WiFi 6E/7), mener les benchmarks et piloter les échanges techniques avec Cisco, Huawei et les intégrateurs partenaires.

3rd Line System Administrator - Juniper or Cisco Must have an Active DV Clearance You will be responsible for incident resolution, system monitoring, infrastructure support, and technical troubleshooting across a broad range of enterprise technologies. The position is ideal for an experienced 2nd or 3rd Line Systems Administrator looking to develop their skills further. Candidates willing to work in Corsham are particularly encouraged to apply, and flexibility on technical experience will be considered. Legacy infrastructure training will be provided where required. 3rd Line System Administrator Responsibilities Provide 2nd and 3rd Line support for secure infrastructure and user services. Monitor systems and respond to incidents through the service management toolset. Configure, troubleshoot, and resolve infrastructure and network faults. Support Windows Server, Active Directory, VMware, Exchange, and core infrastructure technologies. Perform user administration, system maintenance, and operational support activities. Analyse Windows log files and diagnose technical issues. Support network technologies including routing, switching, firewalls, MPLS, and BGP. Deliver existing implementation solutions and contribute to service improvements. Participate in shift work where required. 3rd Line System Administrator Skills and Experience Experience providing 2nd or 3rd Line infrastructure support. Strong knowledge of Windows Server 2012/2022 and VMware technologies. Experience with Active Directory, GPO, DNS, DFS, User Account Management, and Exchange. Strong troubleshooting and analytical skills. Experience configuring and fault-finding network devices. Knowledge of routing, switching, MPLS, BGP, and enterprise firewalls. Experience with Juniper networking technologies is desirable. Strong Cisco experience will also be considered. Knowledge of HSM, PKI, or hardware encryption would be advantageous. Training will be provided where required. Excellent customer service and communication skills. Ex-Military Signals experience would be advantageous. To apply, please send your CV by pressing the apply button. Due to high volume of applications, only shortlisted CVs will be contacted. Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

Ingénieur expert Cilium En tant qu'expert CNI Cilium, vous intégrerez une SQUAD « Outils et Services » au sein d'une équipe Réseaux Datacenter. Vous aurez pour principale mission de prendre en main la solution CNI en cours de déploiement. Vous apporterez votre forte expertise dans le domaine pour participer à son maintien en condition opérationnelle et à ses évolutions. Vous participerez à la montée en compétence de l'équipe en partageant votre vécu sur des infrastructures similaires. Vous participerez aux différents projets liés à la CNI (intégration de nouveaux clients, déploiement de nouvelles plateformes, évolution des architectures, projets d'automatisation, obsolescence) ; proposerez des solutions d'optimisation ; suivrez le capacity planning ; effectuerez une veille technologique sur le périmètre ; accompagnerez les équipes dans leur montée en compétence. Il vous sera possible de prendre en main d'autres technologies de la squad (NSX-T, Netscout, F5, CNI) afin de participer à leur MCO et à leurs évolutions. Votre fonction nécessitera : De collaborer avec les équipes d'exploitation pour identifier les problèmes et mettre en œuvre les corrections nécessaires. D'élaborer des procédures opérationnelles et former les membres de l'équipe ainsi que des équipes transverses sur l'utilisation et la consommation des services de la squad. De participer au maintien en condition opérationnelle et de sécurité des infrastructures existantes en apportant un support de Niveau 3 en HO ou HNO aux équipes d'exploitation ; De définir ou de faire évoluer les règles et procédures de bonne gestion et d'exploitabilité des outils. **** Localisation du poste Saint Quentin en Yvelines **** Critères candidat Niveau d'études minimum Bac + 4 / M1 Formation / Spécialisation Vous êtes issu(e) d'une formation supérieure en informatique de type Master (BAC+4/5) ou Ecole d'Ingénieur, avec une orientation réseaux. Niveau d'expérience minimum Entre 5 et 10 ans Expérience Expertise approfondie sur les fondamentaux du fonctionnement d'architectures CNI, principalement Cilum, dans des environnements complexes, avec une vraie maitrise des configurations avancées. Compétences recherchées Softskills: Réactivité ; Anticipation ; Rigueur ; Expression écrite ; Autonomie ; Adaptabilité ; Travail en équipe ; Partage. Outils informatiques Environnements techniques : CNI Cilium; DDI; Solution d'observabilité (sondes, réseau de collecte); Load-balancers (physiques et virtuels); Fabrics (VXLAN); Routage BGP, OSPF, MPLS Network function virtualization (NFV); SDN (NSX-T, ACI). Langues Anglais opérationnel (usage régulier)

Key accountabilities and decision ownership: * Create and maintain technical documentation and ensure customer networks are documented as part of project handovers * Install, configure, fault find, report and maintain routers, switches and firewalls * completion of site surveys to enable installation * Rack, charger and telecoms equipment installation and commissioning to an excellent standard * Create Health and Safety documentation such as RAMS, POWRA to ensure H&S measures are adhered to. Core competencies, knowledge and experience: * Proven experience in monitoring, maintaining, and troubleshooting network and system environments. * Strong background in IP networking, including CCNA-level knowledge, WAN, LAN, and MPLS. * Hands-on experience with Nokia platforms, including Nokia SAR-H and Nokia NFM-P. * Excellent understanding of routing, switching, and data networking principles. * Experience working with XTran technology. * Proficient in using Microsoft Visio for network and technical diagramming. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. A multiple award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over consecutive years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

Our Telecoms client is looking for a Project Network Engineer to join their team in Glasgow. This is a 6 months contract initially and the role is outside IR35. Please note that due to the nature of the role candidates are required 5 days per week onsite at offices just north of Glasgow. Key responsibilities: * Create and maintain technical documentation and ensure customer networks are documented as part of project handovers * Install, configure, fault find, report and maintain routers, switches and firewalls * Completion of site surveys to enable installation * Rack, charger and telecoms equipment installation and commissioning to an excellent standard * Create Health and Safety documentation such as RAMS, POWRA to ensure H&S measures are adhered to. Required experience: * Proven experience in monitoring, maintaining, and troubleshooting network and system environments. * Strong background in IP networking, including CCNA-level knowledge, WAN, LAN, and MPLS. * Hands-on experience with Nokia platforms, including Nokia SAR-H and Nokia NFM-P. * Excellent understanding of routing, switching, and data networking principles. * Experience working with XTran technology. * Proficient in using Microsoft Visio for network and technical diagramming. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. A multiple award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over consecutive years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

Network Engineer - Juniper or Cisco Must have an Active DV Clearance You will work alongside experienced engineers, interpreting technical documentation and delivering secure network infrastructure that supports critical operational services. The position is ideal for an experienced 3rd Line Network Engineer looking to step into a 4th Line engineering role. Legacy infrastructure training will be provided where required. Network Engineer Responsibilities Build, configure, and support secure network devices. Configure, troubleshoot, and fault-find enterprise network infrastructure. Interpret Low Level Designs (LLDs), Build Guides, and Work Instructions to deliver technical solutions. Support routing, switching, firewall, and network infrastructure deployments. Work with technical teams to deliver secure infrastructure changes. Diagnose and resolve complex networking issues. Support service improvements and infrastructure enhancement activities. Maintain accurate technical documentation and implementation records. Network Engineer Skills and Experience Strong experience providing 3rd Line network support with the desire to progress into a 4th Line engineering role. Experience with Juniper networking technologies. Strong Cisco experience will also be considered. Good knowledge of routing, switching, MPLS, and BGP. Experience supporting enterprise network firewalls. Ability to configure, troubleshoot, and fault-find network devices. Experience interpreting Low Level Designs (LLDs), Build Guides, and Work Instructions. Strong analytical and problem-solving skills. Knowledge of hardware encryption technologies would be advantageous. Training will be provided where required. Excellent communication and team working skills. Ex-Military Signals experience would be advantageous. To apply, please send your CV by pressing the apply button. Due to high volume of applications, only shortlisted CVs will be contacted. Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

Nous recherchons un Administrateur Systèmes Senior / Expert pour assurer l'exploitation, l'évolution et la sécurisation d'un Système d'Information, au sein d'un environnement structuré, exigeant et à fort enjeu. Missions principales Administration & exploitation avancées Administrer l'intégralité du Système d'Information en garantissant disponibilité, performance et stabilité Superviser les systèmes et réseaux (alertes, charge, incidents critiques) Installer, configurer, maintenir et faire évoluer les serveurs et systèmes d'exploitation Assurer la mise à jour continue de l'environnement informatique (patch management, montées de version, correctifs) Microsoft 365 & Cloud Administrer de manière experte le tenant Microsoft 365 : Exchange, SharePoint, Teams, OneDrive, Intune, Defender, stratégies et profils Intervenir sur l'environnement Azure (VM, groupes de ressources, VNet, Entra ID) Garantir la cohérence, la sécurité et la performance des environnements hybrides On-Prem / Cloud Sécurité & fiabilité Piloter la sécurisation du SI : gestion des alertes (CERT, Defender, EDR) Gérer la quarantaine des mails O365 / Vade et les correctifs de sécurité Identifier les risques, proposer et mettre en œuvre des actions correctives Appliquer et faire respecter les standards de sécurité et les bonnes pratiques Support de niveau avancé Prendre en charge les incidents Niveau 2 et les sujets complexes Réaliser les analyses de causes racines et déployer des solutions pérennes Projets & automatisation Participer activement à des projets techniques structurants Être force de proposition sur l'évolution de l'architecture et des outils Concevoir, développer et maintenir des scripts PowerShell pour l'automatisation et l'optimisation des opérations Documentation & processus Maintenir une documentation exhaustive, claire et à jour (architectures, procédures, configurations) Travailler dans un cadre ITIL strict et contribuer à l'amélioration continue des processus Environnement technique Systèmes : 10 × Windows Server 2022 2 × Debian 11 500 postes Windows 11 Supervision & ticketing : Centreon, GLPI Cloud : Azure (12 VM) Bases de données : MS SQL Server 2022 Annuaires : Active Directory, Azure AD Modern Workplace : Microsoft 365 Réseaux : MPLS (23 sites), équipements Cisco Processus : ITIL

Les environnements Réseau & Sécurité à grande échelle n'ont plus de secret pour toi et tu souhaites mettre à profit ton expertise sur des infrastructures critiques ? C'est sans doute toi qu'on attend pour compléter notre équipe en intégrant ce poste d'Ingénieur.e Sécurité & Réseau ! 🚀 Ton challenge si tu l'acceptes : • Assurer le maintien en conditions opérationnelles et l'évolution des infrastructures réseaux, télécoms et sécurité dans un environnement critique multi-sites. • Intervenir sur les principales briques de sécurité et d'infrastructure : F5 Load Balancer, Palo Alto, Fortinet, Cisco ACI, Cisco IronPort et CyberArk/Conjur. • Assurer le support technique de niveau 3, accompagner les équipes projets et contribuer aux évolutions du système d'information et du schéma directeur. • Participer à la sécurisation des infrastructures via la gestion des flux, des accès, des certificats, des VPN et des équipements de sécurité du SI. • Contribuer à la documentation technique, à l'amélioration des procédures d'exploitation et aux chantiers de transformation Réseau & Sécurité. 👀 Tu as le profil idéal si : • Tu disposes d'au moins 7 ans d'expérience dans des environnements Réseau & Sécurité complexes, dont plusieurs années sur des missions orientées sécurité infrastructure. • Tu maîtrises les technologies F5, Palo Alto, Fortinet, Cisco ACI et possèdes une solide culture Réseau (BGP, OSPF, MPLS, VPN, Cisco, Juniper). • Tu es capable d'intervenir en autonomie sur des sujets critiques de RUN, BUILD et expertise technique. • Tu fais preuve de rigueur, d'un fort sens du service et sais communiquer efficacement avec des équipes techniques, métiers et projets. • Une certification Cisco CCNA ou Juniper constitue un véritable atout. 📍 Localisation : Gradignan 🏡 Rythme hybride : Jusqu'à 2 jours de télétravail par semaine ℹ️ Poste : CDI ou Freelance 💰 Rémunération : Il n'existe pas un salaire défini puisqu'il sera à définir ensemble selon ton expérience et tes compétences 🔥 Nos petits + 🤝 Interviens sur des environnements techniques et/ou fonctionnels variés. 💜 Échange et partage tes expériences avec une équipe passionnée. 💼 Met en avant tes ambitions professionnelles. 📈 Monte en compétences grâce à un plan de développement individualisé. 🥳 Élargis ton cercle social en participant à des afterworks avec tes supers collègues. 🌿 Rejoins une société qui grandit vite mais bien (découvre nos engagements). 🚀 +250 Aleysiens nous ont rencontré et ont décidé de nous rejoindre. 🔜 La suite des évènements : Première rencontre téléphonique Faisons plus ample connaissance lors d'un entretien Échange avec un de nos référents techniques sur tes compétences et son expérience chez nous Explore tes ambitions professionnelles avec la direction Engagés pour l'inclusion et la diversité, tous nos postes sont ouverts aux personnes en situation de handicap. Aleysia, l'ESN qui te donne les clés pour réussir 🚀 Ambition, Engagement et Proximité pour une expérience {IT} Minds Connected; Rejoins-nous, on attend plus que toi !

Network Engineer - Juniper or Cisco Must have an Active DV Clearance You will work alongside experienced engineers, interpreting technical documentation and delivering secure network infrastructure that supports critical operational services. The position is ideal for an experienced 3rd Line Network Engineer looking to step into a 4th Line engineering role. Legacy infrastructure training will be provided where required. Network Engineer Responsibilities Build, configure, and support secure network devices. Configure, troubleshoot, and fault-find enterprise network infrastructure. Interpret Low Level Designs (LLDs), Build Guides, and Work Instructions to deliver technical solutions. Support routing, switching, firewall, and network infrastructure deployments. Work with technical teams to deliver secure infrastructure changes. Diagnose and resolve complex networking issues. Support service improvements and infrastructure enhancement activities. Maintain accurate technical documentation and implementation records. Network Engineer Skills and Experience Strong experience providing 3rd Line network support with the desire to progress into a 4th Line engineering role. Experience with Juniper networking technologies. Strong Cisco experience will also be considered. Good knowledge of routing, switching, MPLS, and BGP. Experience supporting enterprise network firewalls. Ability to configure, troubleshoot, and fault-find network devices. Experience interpreting Low Level Designs (LLDs), Build Guides, and Work Instructions. Strong analytical and problem-solving skills. Knowledge of hardware encryption technologies would be advantageous. Training will be provided where required. Excellent communication and team working skills. Ex-Military Signals experience would be advantageous. To apply, please send your CV by pressing the apply button. Due to high volume of applications, only shortlisted CVs will be contacted. Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

Network Developer Must have an active DV Clearance Network Developer Responsibilities Design and develop network solutions to meet evolving customer requirements. Deliver technical changes across global WAN and LAN environments. Configure, support, and troubleshoot network devices across complex infrastructures. Produce and maintain technical documentation including LLDs, Build Guides, and Work Instructions. Liaise with third-party vendors to investigate and resolve technical issues. Support IT Health Check activities and remediate identified vulnerabilities. Provide 3rd and 4th line support for live operational services. Contribute to service improvement, incident resolution, and technical assurance activities. Network Developer Skills and Experience Strong experience designing and implementing secure network solutions. Good knowledge of WAN routing and LAN switching technologies. Experience with MPLS, BGP, IPSec, GRE, and encryption technologies. Strong network troubleshooting and defect resolution capability. Experience configuring enterprise networking equipment. Ability to produce high-quality technical documentation. Experience working with third-party technology suppliers. Understanding of security best practice and vulnerability remediation. Experience supporting operational services within highly secure environments. To apply, please send your CV by pressing the apply button. Due to high volume of applications, only shortlisted CVs will be contacted. Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.