Remote | 3 month (initial)

Day rate DOE | Outside IR35

Role overview

We are seeking a Senior Full Stack Engineer to support the development of a public sector investment technology system used to manage the distribution of public funds.

The organisation is replacing an ageing grants management platform with a bespoke product. The existing codebase is incomplete and undocumented in places, so this role requires someone confident inheriting, reverse-engineering and stabilising production systems.

This is a senior hands-on engineering role, acting as the day-to-day code owner and reviewing pull requests from other engineers.

Key responsibilities

• Taking day-to-day ownership of the codebase and overall engineering quality.
• Reviewing pull requests from other engineers and ensuring code standards are maintained.
• Reverse-engineering, stabilising and improving an undocumented production codebase.
• Managing a multi-developer codebase using Git.
• Debugging and modifying Dockerfiles and docker-compose configurations.
• Supporting local development, CI/CD pipelines and deployment readiness.
• Mentoring mid-level engineers and supporting rigorous engineering practices.

Essential experience

• Strong experience inheriting, reverse-engineering and stabilising undocumented production codebases.
• Strong experience managing multi-developer codebases using Git.
• Ability to read, debug and modify Dockerfiles and docker-compose configurations.
• Experience with FastAPI or Starlette.
• Strong experience conducting code reviews and mentoring mid-level engineers.
• At least mid-level Postgres experience, ideally stronger.
• Familiarity with Pydantic, OpenAPI/Swagger, Azure App Service or container apps would be beneficial.
  Public sector or highly regulated environment experience would be advantageous.