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Job VacancyAdministrateur Système, Réseau & Sécurité H/F

Le Groupe SYD
Published on
Nexus
SD-WAN

40k-45k €
Rennes, Brittany
🌟 Quel sera ton poste ? 🌟 💼 Poste : Administrateur Système, Réseau & Sécurité H/F 📍Lieu : Rennes (35) 🏠 Télétravail : Flexible 📝Contrat : CDI ou Freelance/Portage Début de mission : Début Septembre 👉 Contexte client : Tu rejoins un acteur structuré où les enjeux autour des infrastructures IT, du Cloud et de la cybersécurité sont au cœur de la stratégie. Au sein de l'équipe Infrastructure et Sécurité SI, tu interviens sur des environnements hybrides (on-premise & cloud ) avec l'objectif de garantir la performance, la disponibilité et la sécurité des systèmes d'information. Tu seras positionné comme un expert technique capable de concevoir, faire évoluer et maintenir des infrastructures complexes tout en accompagnant les projets stratégiques. Tu auras pour missions de : Concevoir, mettre en œuvre et maintenir en conditions opérationnelles l'infrastructure SI (serveurs Windows/Linux, virtualisation VMware). Administrer les solutions de stockage (NetApp, IBM) et de sauvegarde (Veeam). Gérer et faire évoluer les environnements Microsoft : Active Directory, Azure AD, Exchange Online. Participer à l'architecture et à l'exploitation de solutions open source et conteneurisées (Kubernetes). Déployer et maintenir des pipelines CI/CD (GitLab CI) et piloter l'infrastructure via Terraform sur GCP. Administrer les composants réseau : Cisco, Nexus, LAN/WAN, routage, SD-WAN. Gérer les solutions de sécurité : Firewall, Proxy, Reverse Proxy, WAF, PAM, EDR, SSE, SSO. Piloter les projets d'infrastructure de bout en bout (conception à mise en production). Coordonner les prestataires et intégrateurs sur les projets techniques. Rédiger et maintenir la documentation technique et les procédures d'exploitation. Assurer le support niveau 2/3 sur les incidents complexes et demandes escaladées. Contribuer à la veille technologique et proposer des solutions innovantes. 🧰 Stack technique : Systèmes : Windows Server, Linux Virtualisation : VMware Cloud : GCP (Terraform impératif), Azure Conteneurs & DevOps : Kubernetes, GitLab CI/CD Stockage & sauvegarde : NetApp, IBM, Veeam Réseau : Cisco, Nexus, LAN/WAN, SD-WAN, TCP/IP Sécurité : Firewall, WAF, Proxy, PAM, EDR, SSO Outils : environnements hybrides (IaaS, PaaS, SaaS)
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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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