> Markdown version of [/jobs/ext/3045992-virtual-routing-systems-engineer](https://www.wearedevelopers.com/jobs/ext/3045992-virtual-routing-systems-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # VIRTUAL ROUTING SYSTEMS ENGINEER - **Company:** SII Services Limited - **Location:** UK - **Contract:** Permanent contract - **Skills:** Agile Methodology, Systems Engineering, Automation of Tests, Border Gateway Protocol, Network Analysis, Configuration Management, Cyber Security, Linux, Multi-protocol Systems, Multicasting, Network Functions Virtualization, Network Protocols, Open Shortest Path First (OSPF), Systems Development Life Cycle, Requirements Management, Secure Coding, Software Engineering, Software Testing Automation Framework, TCP/IP, Tcpdump, Wireshark, Virtualization Technology, Diagnostic Tools, Computer Networking Systems, SC Clearance, Kubernetes, SDN Network, Devsecops, Docker - **Published:** September 24, 2026 - **Apply:** https://sii-group.com/en-GB/job-application/22814?source= ## About the Role The successful candidate will contribute to the design, development and verification of virtualised networking capabilities, supporting the delivery of next-generation routing and network management solutions. The role requires a strong software engineering background combined with hands-on experience of network protocols, virtualised environments and system-level testing. Experience within the Defence, Aerospace, Communications or Secure Government sectors is highly desirable., * Proven experience in software development, integration or testing of networking systems. * Strong understanding of IP networking fundamentals and routing technologies. * Experience working with virtualised network environments and software-defined networking architectures. * Experience creating and executing structured test procedures and automated test frameworks. * Knowledge of networking protocols such as: TCP/IP, UDP, OSPF, BGP, VLA, MPLS, Multicast * Experience using Linux-based development environments. * Experience with network analysis and troubleshooting tools such as Wireshark, tcpdump or equivalent. * Understanding of software development lifecycle (SDLC) and configuration management processes. * Experience producing technical documentation, test specifications and verification evidence. * Strong problem-solving and analytical skills. DESIRABLE SKILLS * Experience developing or testing military, defence or mission-critical communication systems. * Knowledge of software-defined networking technologies and frameworks. * Experience with Kubernetes, Docker or containerised networking solutions. * Familiarity with network function virtualisation (NFV) architectures. * Experience working within Agile or DevSecOps environments. * Knowledge of secure communications systems and cyber security principles. * Experience with automated CI/CD pipelines and test automation frameworks. * Familiarity with requirements management and systems engineering processes. * Understanding of MOD, NATO or defence communication standards. * Experience working in classified or secure development environments. * Current or previously held UK Security Clearance (SC or DV). ## Description * Develop, integrate and maintain virtual routing and network management software components. * Support the design and implementation of software-defined networking (SDN) solutions and virtualised network functions (VNFs). * Develop and execute verification and validation activities for routing, switching and network management functionality. * Create automated test frameworks, test scripts and regression test suites. * Conduct functional, integration, system and performance testing of virtual routing platforms. * Analyse network behaviour and troubleshoot complex routing, protocol and interoperability issues. * Support the development and optimisation of IP networking services within virtualised environments. * Validate routing protocols and services including OSPF, BGP, RIP, ISIS, MPLS and multicast technologies where applicable. * Develop and maintain software and test documentation including design descriptions, test specifications and test reports. * Conduct protocol analysis using industry-standard tools and packet capture technologies. * Support system integration activities with wider platform, communications and security teams. * Participate in configuration management, software release and deployment activities. * Contribute to secure-by-design principles and support cyber security assessments. * Collaborate with customers and stakeholders to define acceptance criteria and support qualification activities. * Support defect investigation, root cause analysis and corrective action implementation. * ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)