Backend Engineer

Title: Senior Backend Engineer (Go/Java) - Global Fintech Contract Location: Central London (Hybrid, 3 days in-office) Engagement: Contract with potential to convert to permanent Rate: Competitive

The Role:

You will join a critical API team responsible for high-throughput backend services and real-time payment routing decisions. This is foundational infrastructure where your work directly affects payment acceptance rates for some of the fastest-moving brands globally. You will own complex problems end-to-end from day one. What You Will Bring: Demonstrable seniority as a backend engineer owning complex services in production.<br />Production-level expertise in Go and/or Java.<br />Experience building or maintaining high-volume, low-latency distributed systems.<br />Strong API design skills.<br />Hands-on experience with AWS cloud-native deployment.<br />A systems-thinking approach to performance, correctness, and failure modes under load.<br />Background in payments, fintech, or financial services is highly advantageous.How to apply This role is being filled exclusively through Randstad Digital. To be considered, please send your CV to Yogeshwari . sen @ randstaddigital. com along with a brief note on your experience with Go/Java and high-volume distributed systems. Randstad Technologies is acting as an Employment Business in relation to this vacancy