> Markdown version of [/jobs/ext/3765275-virtual-routing-systems-engineer](https://www.wearedevelopers.com/jobs/ext/3765275-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 Group
- **Location:** United Kingdom
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Systems Engineering, Automation of Tests, Border Gateway Protocol, Network Analysis, Configuration Management, Software Documentation, Cyber Security, Linux, Internet Protocol, Interoperability, Multi-protocol Systems, Multicasting, Network Functions Virtualization, Routing, Packet Analyzer, Network Administration, Network Protocols, Open Shortest Path First (OSPF), Systems Development Life Cycle, Regression Testing, Requirements Management, Software Engineering, Product Software Implementation Methods, Verification and Validation (Software), Software Testing Automation Framework, Systems Integration, TCP/IP, Wireshark, Virtualization Technology, Diagnostic Tools, Computer Networking Systems, Performance Testing, Test Scripts, System-level Testing, SC Clearance, Kubernetes, SDN Network, Devsecops, Docker
- **Published:** October 16, 2026
- **Apply:** https://www.totaljobs.com/job/virtual-systems-engineer/sii-group-limited-job108182929

## 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. P, * roven experience in software development, integration or testing of networking systems. S

 * trong understanding of IP networking fundamentals and routing technologies. E

 * xperience working with virtualised network environments and software-defined networking architectures. E

 * xperience creating and executing structured test procedures and automated test frameworks. K

 * nowledge of networking protocols such as: TCP/IP, UDP, OSPF, BGP, VLA, MPLS, Multicast E

 * xperience using Linux-based development environments. E

 * xperience with network analysis and troubleshooting tools such as Wireshark, tcpdump or equivalent. U

 * nderstanding of software development lifecycle (SDLC) and configuration management processes. E

 * xperience producing technical documentation, test specifications and verification evidence. S

 * trong problem-solving and analytical skills.
D

ESIRABLE SKILLS E

 * xperience developing or testing military, defence or mission-critical communication systems. K

 * nowledge of software-defined networking technologies and frameworks. E

 * xperience with Kubernetes, Docker or containerised networking solutions. F

 * amiliarity with network function virtualisation (NFV) architectures. E

 * xperience working within Agile or DevSecOps environments. K

 * nowledge of secure communications systems and cyber security principles. E

 * xperience with automated CI/CD pipelines and test automation frameworks. F

 * amiliarity with requirements management and systems engineering processes. U

 * nderstanding of MOD, NATO or defence communication standards. E

 * xperience working in classified or secure development environments. C

 * urrent or previously held UK Security Clearance (SC or DV). N

## Description

* evelop, integrate and maintain virtual routing and network management software components. S

 * upport the design and implementation of software-defined networking (SDN) solutions and virtualised network functions (VNFs). D

 * evelop and execute verification and validation activities for routing, switching and network management functionality. C

 * reate automated test frameworks, test scripts and regression test suites. C

 * onduct functional, integration, system and performance testing of virtual routing platforms. A

 * nalyse network behaviour and troubleshoot complex routing, protocol and interoperability issues. S

 * upport the development and optimisation of IP networking services within virtualised environments. V

 * alidate routing protocols and services including OSPF, BGP, RIP, ISIS, MPLS and multicast technologies where applicable. D

 * evelop and maintain software and test documentation including design descriptions, test specifications and test reports. C

 * onduct protocol analysis using industry-standard tools and packet capture technologies. S

 * upport system integration activities with wider platform, communications and security teams. P

 * articipate in configuration management, software release and deployment activities. C

 * ontribute to secure-by-design principles and support cyber security assessments. C

 * ollaborate with customers and stakeholders to define acceptance criteria and support qualification activities. S

 * upport defect investigation, root cause analysis and corrective action implementation.
E