Senior Full Stack Engineer

In this hands-on Senior Full Stack Engineer role, you will build and enhance modern applications within established engineering standards. You’ll contribute to a high-profile programme inside a heavily regulated organisation, balancing delivery with security and compliance. You’ll work across the stack with Python/FastAPI on the backend and React/TypeScript on the frontend, shaping features and performance. You will collaborate with cross-functional teams to drive robust, secure software delivery and continuous improvement. This is a chance to influence technology decisions in a regulated environment and use AI-assisted tooling to accelerate development.

• Hands-on development of modern applications within established engineering standards
• Design and implement API structures with FastAPI, including middleware and asynchronous flows
• Data modelling with PostgreSQL and migrations using Alembic
• Front-end feature work using React and TypeScript
• Write and maintain automated tests (pytest, JavaScript testing frameworks)
• Code reviews, Git/GitHub workflow, and CI pipeline participation
• Secure coding practices, secrets management, and vulnerability remediation
• Use Claude Code in daily development and critically review AI-generated code before PRs

• Strong commercial Python development experience
• Expertise with FastAPI, API design, and asynchronous programming
• Experience with Pydantic for data validation and API modelling
• Proficiency with Alembic and database migrations
• Strong PostgreSQL skills (data modelling, query optimisation)
• React and TypeScript for front-end development
• Understanding of SSO, JWT, and RBAC for authentication/authorisation
• Experience with pytest and JavaScript testing frameworks
• Solid Git/GitHub knowledge (branching, PRs, reviews, CI)
• Hands-on experience using Claude Code as an AI coding assistant
• Ability to review AI-generated code before PRs
• Strong secure coding practices and secrets management
• Collaborative, asynchronous work within established engineering processes

• Collaborative
• Security-conscious
• Proactive communication
• Python
• FastAPI
• Pydantic