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Contractor

Contractor jobSupport Engineer (Network Operations)

Nicholson SAS
Published on
Aruba
Cisco
CMDB

12 months
350 €
La Défense, Ile-de-France
Au sein de nos équipes d'exploitation, vous intervenez directement sur les infrastructures physiques de nos clients, en datacenter, salles serveurs et sites distants. Il s'agit d'un client de grande envergure du secteur de l'industrie. Vous assurez les opérations de proximité (« Smart Hands »), contribuez au maintien en condition opérationnelle des équipements et participez aux activités de transition ou de reprise de services. Support de proximité réseaux en datacenter Vous réalisez l'installation, le retrait, le déplacement des équipements ainsi que le support de ce materiel : équipements réseau et composants associés. Vous effectuez les opérations de câblage, brassage, repérage et vérification des liaisons cuivre et fibre optique. Vous installez et remplacez les composants matériels défectueux : switches, câbles, cartes réseau etc. Vous réalisez les contrôles physiques des équipements : état des LED, connectivité, numéros de série, étiquettes d'inventaire et occupation des baies. Vous assurez les opérations de redémarrage, de mise sous/hors tension, de connexion console et de diagnostic de premier niveau. Vous intervenez en coordination avec les équipes d'ingénierie à distance, le NOC et les constructeurs pour la résolution des incidents matériels. Vous participez aux opérations de maintenance planifiée, de migration et aux demandes de type IMACD (installation, déplacement, ajout, modification, retrait). Inventaire, documentation et transition Vous collectez, contrôlez et mettez à jour les informations relatives aux sites et datacenters : inventaires, plans de baies, câblage, alimentation électrique, connectivité réseau et procédures d'accès. Vous vérifiez la conformité des actifs physiques avec la documentation existante et identifiez les écarts, risques ou informations manquantes. Vous contribuez à la constitution et à la mise à jour de la documentation technique : procédures, check-lists, comptes rendus de transfert, inventaires et dossiers d'audit. Vous participez aux visites de sites, ateliers de transition et sessions de transfert de connaissances avec les équipes sortantes. Vous veillez au respect des règles de sécurité, des procédures d'accès au datacenter et des processus de gestion des changements.
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Fixed term

Job VacancySenior Network Systems Engineer

Nexus Jobs Limited
Published on

£70k-80k
London, England, United Kingdom
IT Senior Network Systems Engineer Our Client is a Bank based in the City of London, are looking to recruit an IT Senior Network Systems Engineer ideally with at least 7 to 10 years of experience in IT ideally from within the banking financial industry. You will be working in a small team managing the day-to-day technology infrastructure to ensure that the Bank can operate efficiently. The Client would like the following key skills: CCNP level networking Solarwinds – Service Desk Software experience Experience of Palo Alto firewalls Firemon – Network Security Devices and Policy Management Complex Switches experience is essential. Experience of Avaya PABX systems Responsible for the maintenance of the IT infrastructure of the Bank by providing first line support of software, hardware and networking that incudes installation, configuration and troubleshooting Manage day to day operational aspects of a project and scope To design, plan and deploy IT projects to enhance the existing IT infrastructure and also any applications required by the bank. End User Computing support for all staff. Coordinator between the London Users and Group IT Security on all requests for systems access and to ensure that such permissions are provided promptly, are regularly updated and that the Group Access Matrix Protocol is followed at all times Preserve the Assets of the Bank by implementing Disaster Recovery and back up procedures and ensuring that the standards comply with Group requirements Provide IT support to ensure the smooth running of daily and periodic reports for the London Compliance team to ensure adherence to the Anti Money Laundering Provisions Overall networking equipment monitoring (i.e. Network Switches, Firewall and other appliances) and support To plan and carry out maintenance checks to ensure IT Operations, infrastructures are running smoothly and ensure daily routine task completeness To maintain the AYAYA PABX system and to ensure that the recording system is always up and running at all times The following is a list of technical skills required for the role: Technical/Functional skills Proficient in common operating systems Windows 10, Windows Server 2016 and above Redhat Linux based Operating System Software proficiency VMWare v6.7 and above Veeam Backup and Replication Symantec Endpoint Protection Symantec Endpoint Encryption ManageEngine Patch Manager Plus Microsoft Office 365 Networking (IT) Cisco Switches and Routers Palo Alto Firewalls LAN/WAN Routing Hardware Dell PowerEdge Servers Dell PowerVault SAN Storage Project management Data analysis Personal skills (Soft Competencies [Core/Leadership]) Strong interpersonal skills Strong written and verbal communication skills (in English) Strong stakeholder engagement Bachelor or Master's degree or professional qualification in relevant discipline (IT/Information Systems/Computer Science/Technology/Programming/Information Science/System Engineering/Computing) The salary for this role is in the range £70K - £80K. This is a 12 month FTC role. Please send your CV to us in Word format along with your salary and notice period.
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Contractor
Permanent

Job VacancyCloud Engineer landing zone network - sénior

Clostera
Published on
CI/CD
Google Cloud Platform (GCP)
Terraform

1 year
55k-65k €
400-550 €
Massy, Ile-de-France
Dans un contexte où la sécurisation et l'industrialisation des environnements Cloud sont des leviers incontournables de transformation digitale, renforcer la résilience et la performance des infrastructures réseau est un défi majeur pour les grandes organisations internationales. Vous intégrez un projet stratégique dédié à l'évolution et à la maintenance d'une Landing Zone Cloud sécurisée et optimisée, au cœur de l'infrastructure d'un grand groupe de la distribution. Vous apportez votre expertise pour concevoir des architectures réseau robustes, automatiser les déploiements et garantir la haute disponibilité des services. En tant qu'ingénieur Cloud spécialisé Landing Zone Network, vous intervenez au sein d'une équipe experte, contribuant activement à la conception, au déploiement et à la supervision des solutions d'infrastructure cloud. Votre rôle est central pour assurer la continuité et l'évolution des projets réseau à fort niveau de criticité. Concevoir une architecture intégrant Network Connectivity Center dans un environnement Landing Zone existant. Automatiser le déploiement, la configuration et la gestion des infrastructures via Terraform en mode Infrastructure as Code. Mettre en place et maintenir des pipelines CI/CD (GitLab CI, Jenkins) pour garantir une automatisation fiable et rapide. Implémenter des tests automatisés garantissant la robustesse et la conformité des infrastructures déployées. Documenter les architectures techniques, partager les bonnes pratiques et accompagner les équipes dans l'appropriation des solutions déployées. Mettre en œuvre des outils de monitoring pour assurer la supervision continue des services réseau. Concevoir des plans d'adressage IP détaillés couvrant CIDR, VNet/VPC, subnets et IPAM, avec une segmentation et un cloisonnement rigoureux via UDR et tables de routage. Déployer et exploiter les réseaux incluant NAT/eNAT, peering, VPN/ExpressRoute, politiques BGP, garantissant multi-zones et haute disponibilité. Optimiser et défragmenter les plages IP des environnements partagés, gérer les quotas et la réutilisation des ressources. Intégrer les dispositifs de sécurité réseau tels que firewalls, DNS, AppGW, Envoy, Nginx, HAProxy et durcir les flux ingress/egress. Observer les performances réseau (latence, débit), gérer les flux SNAT/SYN, concevoir dashboards et alertes pour maîtriser les coûts. Dépanner et analyser les flux réseau à l'aide des outils spécialisés (traceroute, Network Watcher) en exécutant des runbooks incidents adaptés. En rejoignant cette équipe expérimentée et dynamique, vous évoluez dans un environnement technique exigeant, propice au développement de compétences pointues au service d'un acteur majeur de la grande distribution.
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Contractor

Contractor jobIngénieur Réseaux L3 & Référent IA (H/F) – Freelance – Toulouse

Link Consulting
Published on
Artificial intelligence
GenAI
LAN

3 months
550-650 €
Toulouse, Occitania
Notre client, acteur majeur du secteur industriel, recherche un Ingénieur Réseaux L3 & IA Générative (H/F) pour intervenir au sein d'un environnement international mêlant infrastructures critiques, innovation et nouvelles technologies. ### Vos missions Intégré à une équipe d'experts, vous serez notamment amené à : * Assurer un rôle d'expertise Réseau niveau 3 sur des infrastructures complexes. * Participer aux études d'architecture, aux évolutions et à l'optimisation des environnements réseau. * Accompagner les équipes sur les usages et opportunités liés à l'Intelligence Artificielle. * Contribuer à l'identification et à l'évaluation de cas d'usage autour des LLM et de l'IA générative. * Faire le lien entre les équipes infrastructure, sécurité et innovation. * Participer aux réflexions autour de l'intégration de solutions IA dans les environnements techniques existants. * Assurer une veille technologique sur les sujets Réseaux, IA et automatisation. ### Compétences techniques attendues * * Expertise Réseaux niveau 3. * Maîtrise des environnements LAN, WAN, Datacenter et infrastructures IP. * Solides connaissances des technologies réseau d'entreprise (Cisco, routage, switching, VPN, sécurité réseau...). * Bonne compréhension des architectures et environnements complexes. * Connaissances pratiques des LLM et de l'IA générative. * Compréhension des usages de solutions telles que ChatGPT, Copilot, Gemini, Claude ou modèles open source. * Sensibilité aux problématiques de gouvernance, d'adoption et d'intégration de l'IA en entreprise.
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Contractor

Contractor jobNetwork Engineer – Milton Keynes and Remote

Nexus Jobs Limited
Published on

£300-400
Milton Keynes, England, United Kingdom
Network Engineer – Milton Keynes and Remote Our Client is seeking to recruit a Network Engineer with at least 7 to 10 years proven hands-on expertise. Plan and implement network transformation across 43 UK sites to support a rollout of 1 to1 Devices to students. Support the design and implement of layer 3 network enhancement, additional WiFi Access Points, and the deployment of new firewalls. Peer review the proposed design and configuration and provide documentation in line with departmental standards. Manage the Network Changes into support. Assess existing network IP address schema and DHCP scope Plan an expansion to accommodate additional network devices Test solution, connectivity, and routing Deploy new IP address schema across all sites Document & Transition to Support Assess location and AP density to guarantee performance with increase in concurrent connections Plan and position additional APs to maintain network performance Deploy APs and test performance Document & Transition to Support Firewalls Assess existing firewall configuration including rules, routers and VPNs Build new ruleset template for deployment across estate Test firewall configuration Deploy hardware appliances and configuration Document & Transition to Support Policies & Procedures 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 Multi-site projects Meraki APs HP/Aruba Switches Smoothwall Firewalls Must have proven expertise in Network Design, Network Routing, Switching, Wireless and DHCP/DNS and Network Security Excellent interpersonal skills. Must have a degree in Computer Science or equivalent coupled with a CCNA or equivalent. Any experience and understanding of the Education sector would be very beneficial for this assignment. Must have WAN, LAN, VLAN Design & Implementation along with Firewall Setup, configuration & Management. You will have ITIL certification along with experience of ITIL practices. The rate for this assignment is circa £300 - £400 per day. This is a 6 month assignment initially. The Client has offices in Milton Keynes – you will need to attend meetings from time to time in Milton Keynes – but the role can be worked remotely. Please send your CV to us in Word format along with your daily rate and availability.
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Permanent

Job VacancyNetwork Engineer with Cisco and Banking – City London

Nexus Jobs Limited
Published on

£50k-60k
City of London, England, United Kingdom
Network Engineer with Security and Cisco – City London Our Client urgently requires a Senior Network Engineer with heavy background in Network Security on Cisco and Microsoft. You must have experience of working in a banking environment. The security and support of the company's network is paramount. Predominately a support role (BAU) with design of scalable solutions deliverable through projects. Encompassing numerous technologies that benefit high-availability solutions. This role requires a responsible individual who can design and deliver secure networking solutions. Fast thinker who can diagnose, assist others and remediate BAU support issues. Main Aspects of the role: -Work within Infrastructure team in supporting and delivering all aspect of BAU and support services -Design, build and implement firewall solutions from perimeter to DMZ roles -Support IPS deployment for European branches -Develop, maintain and deliver global standards to all networking devices -Remediate Penetration Test results -Ensure seamless migration of network estate to newly adopted security framework General Skills -Experience working within mission-critical environments -Experience in operational deployments -Datacentre cabling and racking of equipment Technical Skills you need to bring to the table: -In-depth knowledge of CISCO including firewalls, switches and routing protocols -In-depth knowledge of supporting a data-centre and branch inter-connectivity -Strong technical skills are essential -Experience of CISCO multi-layer switches and routers, including 6500s -CISCO certification, ideally CCNP -CISCO CSM -VLAN segregation -McAfee HIPS, Trend Micro -Centralised authentication service (AAA) -SafeNet Ethernet Encryptor -RADIUS / RSA -Security certification (advantageous) You will also need to an understanding of the following technologies: VLAN segregation. DMZ. VSS. Failover. OSPF. High availability. CISCO. Palo Alto. Juniper. McAfee IPS. SafeNet. Tripwire. You will ideally be coming with experience from a City based investment bank. Salary for this role is between £50K and £60K plus banking benefits. Please send your CV to us in Word format along with salary and availability.
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Contractor

Contractor jobInformation Security Manager with Network Engineering Skills

Nexus Jobs Limited
Published on

£500-650
London, England, United Kingdom
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 rate for this role will be in the range £500 pd to £650 pd. This is a 3 month assignment. Do send your CV to us in Word format along with your salary and notice period.
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Permanent

Job VacancySenior Network Specialist with Security and Cisco – City London

Nexus Jobs Limited
Published on

London, England, United Kingdom
Senior Network Specialist with Security and Cisco – City London Our Client urgently requires a Senior Network Specialist with heavy background in Network Security on Cisco and Microsoft. The security and support of the company's network is paramount. Predominately a support role (BAU) with design of scalable solutions deliverable through projects. Encompassing numerous technologies that benefit high-availability solutions. This role requires a responsible individual who can design and deliver secure networking solutions. Fast thinker who can diagnose, assist others and remediate BAU support issues. Main Aspects of the role: -Work within Infrastructure team in supporting and delivering all aspect of BAU and support services -Design, build and implement firewall solutions from perimeter to DMZ roles -Support IPS deployment for European branches -Develop, maintain and deliver global standards to all networking devices -Remediate Penetration Test results -Ensure seamless migration of network estate to newly adopted security framework General Skills -Experience working within mission-critical environments -Experience in operational deployments -Datacentre cabling and racking of equipment Technical Skills you need to bring to the table: -In-depth knowledge of CISCO including firewalls, switches and routing protocols -In-depth knowledge of supporting a datacentre and branch interconnectivity -Strong technical skills are essential -Experience of CISCO multilayer switches and routers, including 6500s -CISCO certification, ideally CCNP -CISCO CSM -VLAN segregation -McAfee HIPS, Trend Micro -Centralised authentication service (AAA) -SafeNet Ethernet Encryptor -RADIUS / RSA -Security certification (advantageous) You will also need to an understanding of the following technologies: VLAN segregation. DMZ. VSS. Failover. OSPF. High availability. CISCO. Palo Alto. Juniper. McAfee IPS. SafeNet. Tripwire. This is a contract role for up to 18 months to start immediately. Please send your CV to us in Word format.
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Permanent

Job VacancyNetwork Support Analyst with Cisco CCNA – City London

Nexus Jobs Limited
Published on

£45k-55k
City of London, England, United Kingdom
Network Support Analyst with Cisco CCNA – City London Our Client is looking to recruit a Network Support Analyst with Cisco CCNA – you must have at least 5 years proven track record. This is a support role (BAU) with involvement in design of scalable solutions deliverable through projects. Encompassing numerous technologies that benefit high-availability solutions. Fast thinker who can diagnose, assist others and remediate BAU support issues. Maintain documentation and networking diagrams for both support and stringent internal audits. This role requires a responsible individual who can support to root cause analysis. Key duties - Work within Infrastructure team in supporting and delivering all aspect of services - BAU encompassing networks, telephony, PABX, voice recording, desk moves and changes - Support annual Disaster Recovery invoking/testing - Contribute to design, build and implementation of firewall solutions from perimeter to DMZ roles - Support IPS deployment for European sites - Develop, maintain and deliver global standards to all networking devices - Interpret network security reports - Assist with seamless migration of network estate to newly adopted security framework - Facilitate internal/external Audits and Penetration Testing. Remediation - Treasury solutions such as IPC turrets General Skills -Experience working within mission-critical environments -Experience in operational deployments -Maintains required industry recognised skills through training and self-study methods Technical Skills -In-depth knowledge of CISCO including firewalls, switches and routing protocols -In-depth knowledge of supporting a datacentre with branch interconnectivity (LES circuits) -CISCO certification, required CCNA -VPN technologies (IPSEC) -Security certification (advantageous) Technologies Layer 2 Switching, Layer 3 Routing, VPN IPSEC & SSL, TACACS, RADIUS, NAT/PAT, VSS. High availability, including failover technologies and first hop redundancy protocols. The Client is based in the City in London close to Liverpool Street. Salary for this position will be in the range £45K - £55K plus banking benefits. Please send your salary to us in Word format along with your salary and availability.
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Permanent

Job VacancySenior Network Engineer

CGI
Published on

Gloucester, England, United Kingdom
At CGI, our Space, Defence and Intelligence business unit delivers mission-critical systems that help keep the UK safe and secure. As a Software Defined Network Engineer, you will play a critical role in designing and delivering next-generation network solutions that enable secure, scalable, and high-performing environments. Working across complex hybrid infrastructures, you will help drive innovation through software-defined technologies, contributing to impactful programmes. You'll take ownership of advanced networking solutions, apply creative approaches to complex challenges, and collaborate within a supportive environment that enables continuous growth and meaningful impact. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK 'Best Employer' by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This position will be based on site near Gloucester 5 days a week.
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Permanent

Job VacancySenior Network Engineer with Security and Cisco – City London

Nexus Jobs Limited
Published on

£60k-70k
London, England, United Kingdom
Senior Network Engineer with Security and Cisco – City London Our Client urgently requires a Senior Network Engineer with heavy background in Network Security on Cisco and Microsoft. The security and support of the company's network is paramount. Predominately a support role (BAU) with design of scalable solutions deliverable through projects. Encompassing numerous technologies that benefit high-availability solutions. This role requires a responsible individual who can design and deliver secure networking solutions. Fast thinker who can diagnose, assist others and remediate BAU support issues. Main Aspects of the role: -Work within Infrastructure team in supporting and delivering all aspect of BAU and support services -Design, build and implement firewall solutions from perimeter to DMZ roles -Support IPS deployment for European branches -Develop, maintain and deliver global standards to all networking devices -Remediate Penetration Test results -Ensure seamless migration of network estate to newly adopted security framework General Skills -Experience working within mission-critical environments -Experience in operational deployments -Datacentre cabling and racking of equipment Technical Skills you need to bring to the table: -In-depth knowledge of CISCO including firewalls, switches and routing protocols -In-depth knowledge of supporting a data-centre and branch inter-connectivity -Strong technical skills are essential -Experience of CISCO multi-layer switches and routers, including 6500s -CISCO certification, ideally CCNP -CISCO CSM -VLAN segregation -McAfee HIPS, Trend Micro -Centralised authentication service (AAA) -SafeNet Ethernet Encryptor -RADIUS / RSA -Security certification (advantageous) You will also need to an understanding of the following technologies: VLAN segregation. DMZ. VSS. Failover. OSPF. High availability. CISCO. Palo Alto. Juniper. McAfee IPS. SafeNet. Tripwire. You will ideally be coming with experience from a City based investment bank. Salary for this role is between £60K and £70K plus banking benefits. Please send your CV to us in Word format.
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Contractor

Contractor jobExpert Réseau Sénior (Extreme Networks / Fabric SPB)

Cherry Pick
Published on
Extreme Networks
Routing & Switching (R&S)
VMware NSX

12 months
600 €
Ile-de-France, France
Notre client, un opérateur d'infrastructures aéroportuaires, renforce le pôle Réseau de sa DSI. Le réseau est critique, très sollicité et réparti sur plusieurs sites : cœur Extreme Networks en Fabric SPB, VMware NSX, un parc important de switches de distribution et datacenter, plus de 1 000 bornes Wi-Fi Aruba, du NAC Forescout, EfficientIP (DDI) et du F5. Le besoin est d'apporter durablement une expertise de haut niveau sur les incidents complexes, les évolutions d'architecture et les projets. Missions Expertise sur le cœur de réseau Extreme Networks : Fabric Connect (SPB), routage et switching, architectures redondées et leurs évolutions Troubleshooting avancé et résolution des incidents complexes ; participation aux cellules de crise Analyse des flux, des performances et de la capacité du réseau Réseau datacenter : switching et routage (BGP, OSPF, IS-IS), interactions entre le réseau physique et le réseau virtuel VMware NSX Référent technique réseau auprès des chefs de projet (sans pilotage de projet) : analyse des besoins, conception et validation des choix techniques, analyse d'impact, revue de configurations, accompagnement des mises en production Audit technique : état des lieux, identification des SPOF, de l'obsolescence et de la dette technique, recommandations de sécurisation et de résilience Rédaction des livrables d'architecture : HLD/LLD, dossiers de conception, schémas, matrices de flux, justification des choix techniques Livrables d'exploitation : comptes rendus d'incidents et RCA, procédures de troubleshooting Capitalisation et transfert de compétences : fiches techniques par technologie, procédures d'exploitation, sessions de transfert auprès de l'équipe interne
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