Senior Java Backend Engineer - Payments & AI-Driven Spec
Summary
Senior Java Backend Developer designing and building secure, high-performance payment services for Nordic client stakeholders in a hybrid Gdynia/Warsaw setup. Core stack is Core Java, Spring Boot microservices and Kafka, applying AI-assisted spec-driven development and owning solutions from specification through production while mentoring peers.
Thrive IT Systems in Poland is seeking a Senior Java Backend Developer with payments domain experience to design and build secure, high-performance payment services. You will be expert in Core Java, Spring Boot microservices and Kafka, and will apply AI-assisted spec-driven development to deliver quality software.
You'll work directly with Nordic client stakeholders in a hybrid setup (Gdynia and Warsaw), owning solutions from specification through to production while mentoring peers in modern