Senior Java Engineer — Low-Latency Payments & Cloud Microservices

RE Partners Consulting is seeking a Senior Java Engineer in Warszawa to design and optimize low-latency, high-throughput backend systems in the payments domain. You will develop RESTful microservices, integrate with MongoDB, and deploy on OpenShift and AWS, while mentoring peers and driving architectural improvements.

The role requires 10+ years in Java, strong Spring/MongoDB experience, and a track record of performance-focused delivery in a collaborative, engineering-driven culture.