Senior Software Engineer (Backend) – Fraud

📋 Description

• Design, build and maintain secure, scalable backend services and APIs that power fraud detection
• Build low-latency services that assess risk and approve, decline or challenge activity in real
• Ingest and enrich device, session, behavioural and transaction data, and integrate it with
• Build risk-based controls such as limits, velocity checks, blocks and step-up challenges (e.g. MFA
• Deliver the data pipelines, metrics and alerting that let the business measure fraud, tune rules
• Work with data and ML colleagues to put machine learning models and AI-assisted workflows into

🎯 Requirements

• Strong, proven experience as a backend engineer building production systems, in Java with Spring
• Hands-on experience with microservices and event-driven architectures, ideally with Kafka or
• Experience building systems where low latency, correctness, idempotency and auditability really
• Comfortable working with large volumes of event and transaction data, and building pipelines that
• Experience integrating with third-party APIs and webhooks, including handling failures, retries and
• Experience with cloud platforms (preferably AWS), containerisation and CI/CD pipelines.

🎁 Benefits

• Fair and competitive salary at every stage of your growth
• Flexible working hours, with hybrid working at its heart
• A culture built on passionate, growth-minded people
• A flexible approach to holiday
• Opportunities to travel to our offices around the world
• An open and creative environment where you can help us define the future of BVNK, its culture, and