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Freelance

Mission freelanceIngénieur Réseau Senior – Migration F5 BIG-IP

Cherry Pick
Publiée le
F5
Load Balancing
Migration

6 mois
550 €
Le Bourget-du-Lac, Auvergne-Rhône-Alpes
Notre client, un groupe international de transport et de logistique présent sur environ 850 sites dans le monde, lance la migration de son parc Citrix NetScaler (ADC) vers F5 BIG-IP. Vous rejoindrez l'équipe Réseau Groupe (Build & RUN), qui fournit les services d'infrastructure à tous les métiers : backbone, collecte des sites, firewalling. Un partenaire intégrateur réalise le design et la mise en production. Votre rôle est de piloter et d'exécuter la migration des applications à grande échelle. Missions Piloter la migration de centaines d'applications de Citrix NetScaler vers F5 BIG-IP, jusqu'à plusieurs milliers Maîtriser la configuration F5 : virtual servers, pools, profils, iRules, certificats SSL/TLS, reverse proxy Faire la transposition technique des configurations NetScaler vers leurs équivalents BIG-IP Travailler avec le partenaire intégrateur pendant les phases de design et de mise en production Faire le lien avec les lignes de métier : planification des bascules, recette applicative, communication sur les impacts Traiter les incidents liés à la migration et au load balancing, les analyser et en faire une synthèse claire pour l'équipe et le management Assurer le passage en RUN : documentation, transfert de compétences, passation aux équipes d'exploitation Utiliser les outils de pilotage de l'équipe : suivi projet, ticketing, ITSM
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CDI

Offre d'emploiIT Operations and Security Lead

Nexus Jobs Limited
Publiée le

£85k-95k
Grand Londres, Royaume-Uni
IT Operations Platforms and Security Lead In summary the Client is looking to recruit an all-round individual with expert knowledge and hands-on experience of IT Infrastructure coupled with Security, Compliance & Risk Management You must have upwards of 10 years hands-on expertise in IT Infrastructure combined with Security and Risk – ideally from within the banking or insurance sector. The IT Operational Platform and Security Lead is responsible for overseeing the organisation's IT operations, ensuring the stability, continuity, security, and efficiency of its technology platforms within a global commercial insurance environment. While Microsoft technologies (Microsoft 365, Azure, Exchange Online) form a core part of the infrastructure, the role also encompasses broader enterprise IT systems, multi layered networking, security, data management, and third-party platforms that support global business operations and the associated applications estate. The role requires a proactive leader who can drive IT operational excellence, manage security risks, focus on continual service improvement, drive transformational delivery projects, and work effectively with internal stakeholders and third-party vendors to deliver a high-quality Global IT services. Working in line with the Architecture defined IT principle of a "buy before build" environment, the individual will need to ensure that outsourced and cloud-based services are robust, cost-effective, and aligned with business needs and the Strategic IT vision. They will also play a key role in enhancing cybersecurity, protecting data and systems, driving transformative operational change, enhancing IT processes and ensuring compliance with governance bodies and industry regulations. Due to the nature of the role, complexity of the estate, current transformation activities and team size, the role requires the functional capability and proficiency to technically augment the team capabilities (when required) and have a detailed knowledge of technical IT support roles/services as a requirement, across multiple technical areas. Security, Compliance & Risk Management Define and enforce cloud security policies, identity management, and access controls to protect systems, networks, and data. Oversee the adoption of zero-trust security principles to enhance protection across cloud platforms. Manage identity and access management (IAM) in a cloud-first environment, including Azure AD, MFA, Conditional Access, SSO, and Privileged Access Management (PAM). Lead threat monitoring, detection, and response using cloud-native security solutions such as Microsoft Defender, Sentinel, and SIEM platforms. Ensure compliance with cloud security frameworks and regulatory requirements (ISO 27001, NIST, GDPR, SOC2, FCA). Conduct regular security risk assessments, penetration tests, and vulnerability management across cloud services. Oversee endpoint security, cloud network and API security for robust protection across all assets Define, manage and maintain accurate DR and BCP plans for the infrastructure area with biannual tests. Technical Experience Microsoft Azure Infrastructure design and administration, including topology, Azure networking, services, and component knowledge, Microsoft AD (Entra), Server and SQL experience, O365 administration and design Global Software Patching and estate management via Intune Firewall (Azure, CheckPoint and Cloudflare), DNS, VPN, WIFI and Local Area Network design & administration experience Software Defined Networking (Cisco, Meraki, Versa) Key Skills Microsoft 365 & Azure: Strong experience managing Microsoft 365 (Exchange, SharePoint, Teams), Azure cloud infrastructure, and security tools such as Microsoft Defender and Sentinel. Security & Compliance: Deep knowledge of security frameworks (ISO 27001, NIST, CIS), compliance requirements (GDPR, SOC2), and risk management best practices. Identity & Access Management (IAM): Expertise in Azure AD, MFA, Conditional Access, Single Sign-On (SSO), and Privileged Access Management (PAM). Threat Management & Incident Response: Ability to detect, respond to, and mitigate cyber threats using SIEM, endpoint security, and vulnerability management tools. Networking & Infrastructure Security: Understanding of firewalls, VPNs, SD-WAN, DNS security, endpoint protection, and cloud security controls. IT Service Management & Automation: Experience implementing ITIL-based service management, automating operational tasks, and optimising service delivery. Operational & Leadership Skills: IT Operations & Service Continuity: Ability to ensure IT systems are highly available, resilient, and fit for purpose, with a strong focus on business continuity and disaster recovery. Supplier & Vendor Management: Experience managing third-party IT vendors, MSPs, and SaaS providers, ensuring service levels, performance, and cost-effectiveness. Project Leadership & Change Management: Ability to lead technology projects, system upgrades, and platform migrations, ensuring smooth execution and minimal business disruption. Process Improvement & Automation: Strong analytical mindset to identify inefficiencies, automate workflows, and enhance security controls. Skills & Mindset: Problem-Solving & Decision-Making: Capable of making informed decisions and resolving complex IT issues in a fast-paced environment. Stakeholder Engagement: Ability to communicate effectively with technical and non-technical stakeholders, including senior leadership and business users. Resilience & Adaptability: Comfortable working in an evolving technology landscape, with a proactive and security-first approach. The Client is a financial organisation based in the City of London. This is a hybrid position with 3 days in the office. Must have a Bachelor's degree in IT or similar. The salary for this role will be in the range £85K - £95K plus Benefits. Do send your CV to us in Word format along with your salary and notice period.
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CDI

Offre d'emploiInformation Security Manager with Network Engineering Skills

Nexus Jobs Limited
Publiée le

£85k-100k
Grand Londres, Royaume-Uni
Information Security Manager with Network Engineering Skills Our Client is bank based in Central London who are looking to recruit a seasoned professional with at least 7 to 10 years expertise level Information Security coupled with Hands-on Network Engineering. The role is mainly Information Security – Data Security and split circa 80% with 20% Network Engineering – so you do need to be hands-on technically. You will ideally have circa 5+ years of work experience with Network Engineering coupled with over 10 years experience with Cisco Systems Products Role Description The Information Security Manager with Network Engineering Skills is a full-time hybrid role based in London, with the flexibility to work from home part of the week. The role oversees the design, implementation, and continuous improvement of information security policies, procedures, and controls across networks and systems. Day-to-day responsibilities include managing the Information Security Management System (ISMS), monitoring cybersecurity and network security events, coordinating incident response, and ensuring compliance with relevant standards and regulations. The person in this role will collaborate with IT and business stakeholders to assess risks, implement technical and procedural safeguards, and support secure network architecture and configuration. Additional tasks include producing security documentation, leading security awareness initiatives, and providing guidance on secure network engineering practices. Qualifications Strong skills in Information Security Management and Information Security, with experience defining and enforcing security policies and governance. Hands-on expertise with Information Security Management Systems (ISMS), including implementation, maintenance, and audit readiness. Proficiency in Cybersecurity and Network Security, covering threat detection, vulnerability management, network hardening, and incident response. Demonstrated network engineering experience (e.g., routing, switching, firewalls, VPNs, secure network design). Relevant certifications such as CISSP, CISM, CISA, CompTIA Security+, or similar are beneficial. Experience with regulatory and compliance frameworks (e.g., ISO 27001, GDPR, NIST) and security best practices. Ability to analyze complex technical environments, communicate clearly with both technical and non-technical stakeholders, and document security requirements and processes. Bachelor's degree in computer science, information security, engineering, or a related field, or equivalent professional experience. Key Networking Skills Required: Cisco Network Switches Layer 2 and 3 (Catalyst 9K) – CCNP Level, Expert Level Preferred Routing protocol – OSPF (Catalyst 9K) – CCNP Level, Expert Level Preferred Cisco Switch Stacking (Cat 9K Switches 9600, 9300. 9200) Virtual Routing and Forwarding – (Catalyst 9600) Internetworking Troubleshooting - CCNP Level, Expert Level Preferred High Availability and Disaster Recovery - CCNP Level, Expert Level Preferred Security/Cyber Security Skills Required: Cisco Firepower Firewalls (ASA, FTD) - CCNP Level, Expert Level Preferred Palo Alto Firewalls – Specialist Level, Architect Level Preferred Cisco Layer 2 Port Security Network Access Control including Cisco ISE, TACACS etc Network Detection and Response Network Encryption (Site to Site VPN's) Cisco Secure Client (ASA) Network IPS (Trellix) Network Zero Day (Trellix NX or similar) Host Zero Day (Trellix HX or similar) Cyber Security Network Control Incident Investigation with the assistance of group cyber security experts – Tier 1, Tier 2 to 3 preferred, using LogRhythm SIEM a bonus Host End Point Protection (Symantec) Host IPS Preferred Skills and Knowledge Vulnerability Management (Scanning for Vulnerabilities and classifying the risk, CIS Benchmark Scanning and compliance) – Using Rapid7 a bonus Knowledge of Penetration Testing, understanding of the types of testing and their advantages and disadvantages Security Zone Design and considerations Network and Security Architecture Design and Considerations Understanding of Information Security (Confidentiality, Integrity, Availability), MITRE ATT&CK, NIST, ISO 27001, SIEM use cases for key controls etc Risk Management in Cyber Security, SSL Blind spots, what causes them and how to mitigate Malware/Ransomware and how to mitigate along with Penetration testing concepts Understanding of White/Black/Grey Box penetration testing. Developing Security policies and procedures and conducting audits/risk assessments Handling crisis situations during security incidents The role is hybrid 3 days in the office in Central London. The salary for this role will be in the range £85K - £100K + Benefits. Do send your CV to us in Word format along with your salary and notice period.
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Freelance
CDI

Offre d'emploiChef de Projet Infrastructure & Sécurité IT (H/F)

ALLEGIS GROUP
Publiée le
Infrastructure

4 mois
Courbevoie, Île-de-France
Contexte Dans le cadre du renforcement des équipes CTO nous recherchons un Chef de Projet Infrastructure & Sécurité IT pour piloter des projets stratégiques liés à l'évolution, la sécurisation et l'optimisation des infrastructures critiques de l'entreprise. L'environnement est orienté paiement, monétique, cybersécurité et infrastructures, avec de fortes exigences en matière de disponibilité, résilience et conformité. Vos missionsPiloter des projets Infrastructure & Sécurité de bout en bout. Recueillir et formaliser les besoins métiers et techniques. Construire et suivre les plannings, budgets et plans d'actions. Animer les comités projet (COPROJ) et contribuer aux comités de pilotage (COPIL). Coordonner les équipes Infrastructure, Réseaux et Cybersécurité. Identifier et suivre les risques, dépendances et actions correctives. Accompagner les projets de sécurisation des infrastructures et garantir leur conformité. Veiller au respect des standards de sécurité, des contraintes réglementaires et des bonnes pratiques. Produire les reportings d'avancement et la communication projet auprès des parties prenantes. Compétences techniquesGestion de projet Pilotage de projets Infrastructure & Sécurité. Gouvernance projet (COPIL / COPROJ). Gestion budgétaire et des risques. Reporting exécutif et suivi des KPI. Infrastructure Réseaux, Active Directory, DNS. Windows Server, Linux/Unix. GPO, PRA/PCA. Segmentation réseau. Cybersécurité Architecture de sécurité. Sécurisation des infrastructures. Firewalls Check Point, Fortinet et Palo Alto. Bonnes pratiques MCO/MCS. Paiement & Conformité Environnement Paiement / Monétique. Norme PCI-DSS. Gouvernance et conformité sécurité. Qualités recherchéesLeadership transverse. Excellent relationnel et communication. Rigueur et sens de l'organisation. Esprit d'analyse et de synthèse. Autonomie et sens des priorités. Capacité à évoluer dans des environnements sensibles et à forte exigence sécuritaire. Informations complémentairesLocalisation : La Défense (92) Durée : Mission longue (160 jours estimés) Démarrage : Octobre 2026 Télétravail : Présence sur site privilégiée Secteur : Paiement / Monétique
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CDI

Offre d'emploiTelecoms Maintenance Engineer

Bluetown
Publiée le

£32k-35k
North Berwick, Écosse, Royaume-Uni
Job Title: Telecoms Maintenance Engineer Location: Based in Fife, Scotland (Field-based, covering Scotland & North England) Salary: £32,000 - £35,000 per annum depending on experience + Company van provided Job Type: Full-time, Permanent Working Hours: Monday to Friday, 8 hours per day within our operating hours of 08:00 to 18:00, with a 30-minute lunch break. On-call and overtime available on a shared rota. About Flotek: Flotek Group is one of the UK's fastest-growing technology providers, delivering IT, cyber security and communications solutions to SMEs. As part of our employee-owned "Purple Army", you'll join a collaborative team focused on expertise, trust and delivering exceptional service to our partners. The Role: We're looking for a Telecoms Maintenance Engineer based in Fife to support customers across Scotland and the North of England. This is a field-based role focused primarily on telecoms and connectivity, with a basic IT support element. You'll install, maintain and troubleshoot hosted voice, telephony and connectivity solutions, attending both planned installations and reactive service calls. You'll become a trusted face for our partners, providing excellent customer service while taking ownership of incidents through to resolution. Travel is required, including occasional overnight stays. Applicants must hold a full UK driving licence and have the right to work in the UK. Key Responsibilities: Diagnose and resolve on-site telephony, voice and connectivity issues. Deliver handset deployments, telephony installations and moves/adds/changes. Install and troubleshoot SIP trunks, broadband circuits, routers, switches and firewalls. Carry out proactive maintenance visits and site health checks. Coordinate with carriers, suppliers and Openreach engineers. Provide basic first-line IT support for desktops, laptops, printers and Microsoft 365 queries. Own incidents through to resolution, escalating where required. Maintain accurate documentation within HaloPSA and ITGlue. Deliver excellent customer service and identify opportunities for improvement. Participate in a shared on-call rota. What We're Looking For Essential Minimum 2 years' experience in a telecoms, communications, MSP or field engineering role. Strong VoIP and hosted telephony experience. Understanding of SIP, RTP, NAT and networking fundamentals. Experience with routing, switching, VLANs, wireless and firewalls. Structured cabling, patching, testing and handset deployment experience. Strong customer-facing and communication skills. Ability to work independently and manage your own workload. Full UK driving licence. Desirable Microsoft 365 and general IT support experience. Microsoft Teams Phone, Direct Routing and Operator Connect knowledge. Experience with Gamma, Horizon, CallSwitch, Yealink or similar platforms. Familiarity with SonicWall, UniFi, Aruba or DrayTek networking. CompTIA Network+, MS-900, AZ-900 or other relevant certifications. Experience using HaloPSA, ITGlue, Datto or similar MSP tools. Technologies You'll Work With: Voice & Telephony FloCX (Gamma/Cisco), FloOne and Floline+ Microsoft Teams Phone and Operator Connect SIP trunking and hosted VoIP platforms Yealink handsets IVR, call queues, voicemail and call routing Mobile and unified communications solutions Connectivity & Networking SoGEA, FTTC, FTTP and leased lines SonicWall, UniFi, Aruba and DrayTek networking VLANs, switching and firewall configuration Structured cabling, patching and testing Carrier fault management HaloPSA and ITGlue What You'll Get EMI Share Equity Scheme ("Purple Pie") Company van, fuel card, tools, laptop and mobile phone Birthday day off plus an additional life-event day Charity Give Back Day Perkbox employee discounts Employee Assistance Programme Funded training and certifications Clear career progression into senior engineering, Rapid Response or technical leadership roles Apply Now If you're an experienced telecoms engineer looking for a varied field-based role with a growing technology business, we'd love to hear from you. Candidates with experience as a Telecoms Engineer, Telecoms Technician, Comms Engineer, MSP Engineer, Telecommunications Support Technician or Field-Based Telecoms Engineer are encouraged to apply.
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Freelance

Mission freelanceArchitecte solutions Montpellier Conteunerisation , micro-services, kubernetes, Virtualisation ...

WorldWide People
Publiée le
Architecture

6 mois
400-500 €
Montpellier, Occitanie
Architecte solutions Montpellier - Conteunerisation , micro-services, kubernetes, Virtualisation (EsX/VM) et réseaux (flux, transferts, DNS, firewall,proxy…) Définir et animer l'architecture technique des solutions, produire les livrables d'architecture techniques, compléter et superviser l'évolution de ces Architectures Technique au cours de leur mise en œuvre Accompagnement des équipiers(architecte applicatif, squad) et du Cluster (chef de projet, ingénieur de production, intégrateur, etc) dans l'implémentation et la vie de la solution technique définie, dans une logique Devops et agile Dont contribution aux phases de tests et benchs Dont le traitement des obsolescences techniques Suivi des mises en œuvre/construction de produits techniques, en liaison avec les socles technologiques fournisseurs (animation et/ou suivi) Compétences techniques : Architecture technique de solutions hybrides (native, monde open, mainframe) Dont Conteunerisation , micro-services, kubernetes Dont Virtualisation (EsX/VM) et réseaux (flux, transferts, DNS, firewall,proxy…) Base de données relationnelles et NoSQL (MongoDB, Elastic, etc..), gestion de cache APIsation , WSO2, Connaissances en développement sur des nouvelles technologies Environnement de travail Windows
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Freelance

Mission freelanceIT Support Technician

Nexus Jobs Limited
Publiée le

£150-200
Grand Londres, Royaume-Uni
IT Support Technician Our Client is an Entertainment, a live entertainment platform that owns and operates over 100 major music festivals in the UK, Europe and Australia. They are looking to hire an IT Support Technician to work within the UK division of the business. This role offers a self-starting candidate the ability to support a dynamic and fast-growing business, with future opportunities for personal development and career growth within the group. The IT Support Technician will report to the Director of Information Technology, and will support users both at global head office in Central London and in our operating businesses across the UK. The role will be instrumental in ensuring that users benefit from the highest standards of service, including with regards to information security, system availability and change management. Our current core tech stack consists of MS365 + Azure AD, box.com, Airtable, Zoom (+ Zoom Phone), Slack and Salesforce and we support user access to Google Workspace together with various other line of business products. Prior experience administering Azure Active Directory tenancies would be particularly valuable, together with exposure to deployment and maintenance of security tools such as endpoint management and anti-virus. We support both Windows and Mac devices and our users access our services both on corporate machines and BYOD. We are 100% cloud native with no on-premises systems. Specific tasks will include: First line support for users both in person and via support channels. Resolve or escalate issues Hardware setup and configuration, patching and upgrades Support audio-visual / conference room equipment and printers Monitoring and maintaining local networking equipment such as access points, firewalls etc Responsible for maintenance and upkeep of our backup Infrastructure, including laptops and relevant server(s) and other designated cloud backup locations. Provide timely report to senior management on progress of dedicated tasks, or on-going activities. Configuration and monitoring of core systems Administration for IT processes such as: Support ticketing Equipment inventories Hardware purchases, repairs and disposals Joiner-Mover-Leaver process Managing license count Assisting with change projects such as data migration, office reconfiguration and platform or service changes Personal Attributes: Detail and precision in aspects of approach to tasks Ability to prioritise conflicting workflows Team player, ability to communicate effectively with non-technical users and senior management Excellent presentation and time keeping Experience 3 years experience in equivalent setting Microsoft Office 2019+ support essential Mac (iOS) support exposure desirable Exposure to endpoint device management systems desirable S Azure support essential Good documentation and analytical skills, with a passion for end-user satisfaction. Evidence of commitment to training and knowledge The Client is based in Central London with some attendance at operating business offices elsewhere in London and across the UK. This is a 3 month contract assignment for 3 days per week initially. The rate will depend on your experience but will be in the range £150 to £200 per day. Do send your CV to us in Word format along with your daily rate and availability.
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Les métiers et les missions en freelance pour Firewall

Consultant·e en cybersécurité

Le/ La consultant·e en cybersécurité utilise les firewalls pour analyser les vulnérabilités, recommander des solutions de protection et implémenter des politiques de sécurité afin de protéger les infrastructures des entreprises contre les attaques.

Ingénieur·e en cybersécurité

L'ingénieur·e en cybersécurité configure, surveille et optimise les firewalls pour protéger les réseaux et systèmes d’information contre les menaces externes et internes.

Administrateur·rice réseaux

L'administrateur·rice réseaux configure les firewalls dans le cadre de la gestion des réseaux pour garantir leur sécurité et prévenir les intrusions non autorisées.

Responsable sécurité informatique (CISO)

Le/ La responsable sécurité informatique supervise la gestion des firewalls dans une organisation, assurant une protection optimale des données sensibles et la conformité aux normes de sécurité.

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