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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Engineer III - **Company:** SBS - **Location:** Courbevoie, France - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Application Firewall, Software System Penetration Testing, Microsoft Azure, Border Gateway Protocol, Common Lisp Object Systems, Cloud Computing, Cyber Security, Computer Networks, System Configuration, Data Centers, HAProxy, Intrusion Detection and Prevention, Intrusion Detection Systems, Virtual Private Networks (VPN), Information Systems Security Architecture Professional, Network Security, Network Troubleshooting, Network Layer, Network Architecture, Network Planning and Design, Routing, Network Segmentation, Network Service, Nginx, Cloud Services, Zero Trust Network Access, Reverse Proxy, Web Application Security, Software Vulnerability Management, Wide Area Networks, Wi-Fi Technology, Computer Networking Systems, Google Cloud, Load Balancing, Computer Network Operations, Cloud Platform System, Firewalls (Computer Science), Backend, Data Center Networking, Information Technology, Palo Alto Networks, Fortinet, Cisco - **Published:** September 23, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=5c3e52c2a20aa102 ## About the Role We are looking for a skilled and knowledgeable Senior Network Engineer to join our IT Infrastructure team., Bachelor's degree in Computer Science, Information Technology, or a related field. Relevant certifications (e.g., CCNA, CCNP, CISSP) are a plus. Experience: 5-8 years of experience in network engineering, with a strong focus on SASE, BGP, Firewalling, SD-WAN, CSP operations, and Reverse Proxy technologies, including hands-on experience operating data center network fabrics (spine-leaf / Clos architectures). Technical Skills: Proficient in configuring and managing SASE solutions and technologies. In-depth knowledge of BGP and other routing protocols. Hands-on experience with firewall technologies (e.g., Palo Alto, Fortinet). Strong understanding of SD-WAN technologies and best practices. Experience with network operations in cloud environments such as AWS, Azure, or GCP. Expertise in configuring and managing reverse proxy technologies (e.g., NGINX, HAProxy). Strong hands-on expertise in data center network architecture: Layer 3 leaf-spine (Clos) fabric design, and underlay/overlay (BGP EVPN-VXLAN) technologies. Solid IT Security background: vulnerability management, security hardening, Zero Trust principles, IDS/IPS, and familiarity with security compliance frameworks. General working knowledge of Aruba fabric switching (AFC-managed) and Cisco Meraki (SD-WAN, switching, wireless) - comfortable with day-to-day administration and troubleshooting; deep vendor-specialist expertise not required. Language Skills: English: mandatory. Professional proficiency, both written and spoken, to effectively collaborate with global teams and communicate with stakeholders. Candidates without a professional working level of English will not be considered. Soft Skills: Strong self-learning capabilities. Excellent problem-solving and analytical skills. Strong communication skills, with the ability to explain complex technical concepts to non-technical stakeholders. Ability to work independently and as part of a collaborative team. Preferred Certifications: Cisco Certified Network Professional (CCNP) Certified Information Systems Security Professional (CISSP) AWS Certified Advanced Networking - Specialty Palo Alto Networks Certified Network Security Engineer (PCNSE) Relevant reverse proxy certifications or experience Cisco CCNP Data Center (350-601 DCCOR) or CCIE Data Center - data center fabric design and operations ## Description The ideal candidate will have strong experience in designing, implementing, and maintaining secure and efficient network infrastructures. Key areas of expertise include SASE (Secure Access Service Edge), BGP (Border Gateway Protocol), Firewall management, SD-WAN (Software-Defined Wide Area Network), CSP (Cloud Service Provider) operations, Reverse Proxy technology, and Data Center Network Architecture (Layer 3 leaf-spine / Clos fabric design) and Wifi Technology. The role also requires a solid IT Security background beyond firewall administration. Professional English proficiency (written and spoken) is mandatory - this role requires daily collaboration with a globally distributed team and stakeholders across Europe, the US, and India. Responsibilities: Network Design and Implementation: Design, deploy, and maintain high-performance and resilient network infrastructures that meet the organization's business needs. Implement SASE solutions to enhance network security and ensure secure access across different environments. Configure and manage BGP routing for optimal network performance and reliability. Data Center Network Architecture: Design, deploy, and operate Layer 3 leaf-spine (Clos) data center fabric architectures, ensuring predictable, low-latency, non-blocking connectivity between compute and storage resources. Implement and maintain underlay routing (BGP-based) and overlay technologies (VXLAN/EVPN) to support scalable, multi-tenant data center fabrics. Support data center migrations, cutovers, hardware refresh, and fabric expansion projects with minimal service disruption. Firewall and Security Management: Configure, manage, and monitor firewalls, including rule sets, VPNs, and threat prevention features. Conduct regular firewall audits and assessments to ensure compliance with security policies and industry standards. SD-WAN Management: Design and implement SD-WAN solutions to optimize connectivity and performance across multiple locations. Monitor and manage SD-WAN environments, addressing any issues or performance bottlenecks. Cloud Service Provider Operations: Integrate and manage network services within CSP environments (e.g., AWS, Azure, GCP), ensuring secure and efficient cloud connectivity. Implement and manage VPNs, VPCs, and other cloud networking components. Reverse Proxy Management: Configure and manage reverse proxy technologies to optimize and secure web traffic, ensuring proper load balancing and protection for backend servers. Monitor reverse proxy performance and troubleshoot issues to ensure reliable application delivery. IT Security and Compliance: Apply IT security best practices across network infrastructure, including system/device hardening, vulnerability management, and secure configuration baselines. Work closely with the security team on Zero Trust network access principles, network segmentation, and threat detection. Implement and maintain intrusion detection and prevention systems (IDS/IPS). Support security audits, vulnerability/penetration test remediation, and compliance reporting against industry standards. Troubleshooting and Support: Provide advanced troubleshooting for network issues, identifying root causes and implementing effective solutions. Collaborate with other IT teams to resolve complex technical problems and support network-related incidents. Documentation and Reporting: Maintain detailed documentation of network configurations, changes, and procedures. Generate regular reports on network performance, security incidents, and project progress for management review. Continuous Improvement: Stay updated on the latest industry trends and technologies, applying this knowledge to improve network efficiency, security, and performance. Propose and implement network upgrades and enhancements to meet evolving business needs. ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Post-Quantum Cryptography: Preparing for Q-Day](https://www.wearedevelopers.com/videos/100179-post-quantum-cryptography-preparing-for-q-day) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [Demystifying application networking in the cloud](https://www.wearedevelopers.com/videos/675-demystifying-application-networking-in-the-cloud) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) ## Related Articles - [Best Companies to Work For in Paris: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/190-best-companies-to-work-for-in-paris-top-25-companies-in-2023) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)