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.

Key Responsibilities:

• 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

Key Skills:

• 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