Senior Backend Engineer

Backend Developer – Golang / Python / Java / Tech-First Fintech – Inside IR35

Our client is a leading, tech‑first fintech building backend systems that power millions of users every day. They are looking for a Backend Developer with experience in Golang, Python, or Java who can contribute to scalable, high‑performance systems and help deliver impactful products.

• Build and maintain backend services and APIs in a Golang‑first environment, with Python or Java experience welcome.
• Work on distributed systems, microservices, and event‑driven pipelines handling millions of requests with low latency.
• Deploy and operate services on Kubernetes and Docker, leveraging AWS infrastructure such as EC2, S3, Lambda, and RDS.
• Implement monitoring and observability using tools like Grafana and Prometheus to track system performance.
• Collaborate with product, frontend, and analytics teams to deliver features that make a tangible impact on user experience.
• Contribute to CI/CD pipelines, automated testing, and maintainable code practices.

• Golang / Python / Java: solid backend experience, happy to work in a Golang‑first environment.
• Scalable systems: experience with microservices, event‑driven architecture, and high‑throughput APIs.
• Cloud‑native: AWS or GCP experience, containerisation, orchestration, and horizontal scaling.
• Product‑focused mindset: enjoys building systems that directly improve user experience and business outcomes.
• Collaboration:
  
  Agile, TDD, CI/CD, and comfortable working closely across teams.

Rate: DoE, Inside IR35

Location: Fully remote, UK‑based

Duration: 6‑month rolling contracts within a multi‑year engagement