This senior backend engineering role builds and owns APIs and a low-latency layer that gives internal teams and customers reliable access to product data. It suits a hands-on engineer with deep experience in data-serving systems, dependable APIs and high-performance infrastructure.
At a glance
- Based in London
- Own customer-facing data APIs and serving infrastructure
- Focus on low latency, reliability and stable contracts
- Work in a small specialist team with significant autonomy
- Applications close at 08:00 CEST on 13 October 2026
The role
- Create a trusted boundary between raw product data and its consumers
- Work with data engineers, product managers and platform teams
- Take direct responsibility for the quality and availability of customer-facing services
What you will do
- Build clean, versioned and high-performing API endpoints
- Optimise database read models, indexes and caching
- Integrate the serving layer with Kotlin-based backend services
- Monitor services, respond to incidents and manage service-level objectives
- Develop near-real-time aggregation across backend services
- Implement API security, permissions and detailed audit trails
- Design metadata, lineage and governance capabilities
What you will bring
- Strong backend engineering experience with reporting or analytics APIs
- Expertise in read-heavy systems, SQL, database optimisation and caching
- Deep Kafka and JVM-language experience
- Experience with AWS or GCP, Kubernetes and containerised applications
- Understanding of both data systems and product backend services
- Experience in fintech, payments or another regulated product environment
- Ability to deliver independently in a fast-moving setting
Working pattern and location
- London
How to apply
This role is advertised on a confidential basis. Applications are made through theHRkey: select “Apply through theHRkey”, add your CV and answer a short set of questions about your experience. Your application is received straight away and we will follow up on next steps.