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# Software Engineer, Full-Stack - X-SEED Technology Limited - Watford

- **Company:** Information Technology
- **Location:** Watford, UK (Remote available)
- **Salary:** £41,600.0 - £52,000.0
- **Contract:** Temporary to permanent
- **Skills:** Amazon Web Services, Apple IOS, Automation of Tests, Mobile Application Development, Code Review, Graph Database, Python (Programming Language), PostgreSQL, Neo4j, Data Storage Technologies, ReactJS, Large Language Models, Prompt Engineering, Backend, Fastapi, React Native, Front End Software Development, Terraform, Docker, Microservices
- **Published:** August 14, 2026
- **Apply:** https://jobtoday.com/gb/job/software-engineer-full-stack-7bY6AQ

## About the Role

* Proven full-stack experience with React and Python, ideally with FastAPI
 * Experience with Docker and microservices architecture
 * Working knowledge of PostgreSQL; familiarity with Neo4j or graph databases a plus
 * Experience working with LLMs (prompt engineering, API integration, or LLM-powered features)
 * Strong track record of writing automated tests and building testable code
 * Comfortable working independently in a remote, fast-paced startup environment
 * Must be eligible to work in the UK; we are unable to provide visa sponsorship

Nice to Have

 * Experience with AWS and Terraform
 * Mobile app development experience (React Native, iOS, or Android)
 * Experience with FastMCP or LangGraph

What We Offer

## Description

We're a startup looking for a Full-Stack Software Engineer to join our engineering team on a contract basis and help design, build, and scale our product. You'll work across the stack, from React interfaces to Python backends, with real ownership over what you build. This is a great fit for someone comfortable with the pace of a startup, who cares about clean, well-tested code, and is excited about integrating LLMs into real-world products.
You'll be working remotely with in-person meetups in the West Midlands every 2-4 weeks.

What You'll Do

 * Build full-stack features using React on the frontend and Python (FastAPI) on the backend
 * Design and maintain containerized services using Docker within a microservices architecture
 * Work with PostgreSQL and Neo4j for data storage and modeling
 * Integrate LLMs into our products, including prompt design, tool calling, and agentic workflows
 * Write and maintain automated tests as a core part of the development process
 * Collaborate with the team to ship features end-to-end and take part in code reviews


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