Senior Java Engineer – Reactive (Spring WebFlux)

Are you a senior, hands-on Engineer who thrives in event-driven, asynchronous environments? Do you enjoy building low-latency, high-throughput distributed systems where correctness, resilience, and performance really matter?

This is an opportunity to work at the core of real-time payments infrastructure, helping to power instant transactions for some of the world’s largest banks.

We’re hiring on behalf of a leading payments consultancy delivering mission-critical, event-driven platforms that integrate deeply with bank infrastructure to enable secure, real-time payments at global scale.

What You’ll Be Doing

You’ll play a senior individual-contributor role within a high-performing engineering team, building asynchronous, message-driven systems designed for scale, resilience, and near-zero downtime.

• Design and implement high-throughput, low-latency systems processing millions of real-time payment events
• Build event-driven architectu...