Senior Java Engineer

Java Developer — Greenfield ProjectWe are looking for a self-motivated Java Developer to build a greenfield, mission-critical system from the ground up. The ideal candidate works independently, understands security and reliability, and uses AI tools heavily to deliver faster and better.Requirements◆ Minimum 5 years of professional Java backend experience ◆ Strong familiarity with mission-critical systems and production-grade engineering ◆ Good understanding of security best practices, reliability, observability, and failure handling ◆ Experience with Java, Spring Boot, APIs, databases, messaging systems, and cloud-native infrastructure ◆ Strong ownership mindset and ability to work independently with minimal supervision ◆ Daily use of AI tools for coding, testing, debugging, documentation, and delivery acceleration ◆ Payment industry experience is a big plusWhat we offer◆ Greenfield project with high technical ownership ◆ Work on a mission-critical system from the ground up ◆ Market-conform salary ◆ Possibility of early-employee equity