Full Stack Software Engineer

Full Stack Software Engineer | Python | C++ | APIs | Defence | Contract

Data Processing | Kubernetes | Sonar Systems | Hybrid (Southampton)

SR2 is partnered with an industry leading consultancy on the Defence programme, supporting critical Defence innovation, and we’re looking for an experienced Full Stack Software Engineer to join the team.

This role will focus on developing robust, production‑grade APIs, building data pipelines, and delivering software applications into secure containerised environments. You’ll work closely with scientists, engineers, and domain experts to ensure sonar data is processed, shared, and operationally ready.

• Design and develop APIs for data streaming across multiple protocols (HTTP RPC, Web Sockets, TCP, UDP) using JSON/Protobuf
• Support engineers and scientists in adopting and using APIs effectively
• Build and maintain data processing pipelines in collaboration with domain experts
• Review and contribute to codebases across Python and C++
• Create and maintain unit and integration tests for reliability and quality
• Deliver applications into container orchestration systems like Kubernetes
• Document design decisions and ensure knowledge sharing across teams
• Solve complex technical challenges across multi‑technology environments

• Strong background in software engineering and data management principles
• Proven expertise with Python and a strongly‑typed language (C/C++)
• Extensive experience designing and deploying production‑grade APIs
• Hands‑on experience delivering operational software into live environments
• Familiarity with Kubernetes and containerisation workflows
• Strong problem‑solving and collaboration skills, especially in multi‑team projects
• Commitment to software quality, best practices, and technical documentation

• 6 months
• Rate: £500 p/d
• Location:
  
  Hybrid, Southampton 1‑2 days per week
• Start: ASAP