Job Description
Senior Full Stack Engineer (Node.js / React)
Location: London (Hybrid)
Salary: up to £100,000
We’re working with a well-funded, early-stage startup building a next-generation, AI-powered platform in the fintech/regtech space. They’re looking for a Senior Full Stack Engineer to play a key role in scaling a modern microservices architecture and shaping the future of the product.
What you’ll be doing:
• Designing and building scalable microservices using Node.js (Nest.js) and React
• Driving an API-first architecture with strong focus on service-to-service communication and contract testing
• Owning features end-to-end, from idea to production with a strong feedback loop from real users
• Improving system performance, reliability, and observability across a distributed environment
• Contributing to a modern DevOps culture with CI/CD, automated testing, and infrastructure as code
Tech stack:
React, Node.js (Nest.js), Python/FastAPI, AWS (ECS), PostgreSQL, Kafka, Terraform, GitHub CI/CD
Testing: Jest, Cypress, Pact, Pytest
What they’re looking for:
• Strong experience building distributed systems / microservices architectures
• Deep hands-on expertise with Node.js and React
• Solid understanding of API design, event-driven systems, and contract testing
• Experience working in fast-paced, ambiguous environments
• Passion for automation, clean code, and solving real customer problems
Why join?
• End-to-end ownership of impactful features and systems
• Work on a cutting-edge platform leveraging AI/ML
• High-trust environment with strong engineering culture
• Flexible working (hybrid London or remote)
• Direct exposure to founders and influence over technical direction
If you’re excited by building scalable systems, working with modern tooling, and being part of a high-growth engineering team - let’s chat.
Message me directly or apply to learn more!