AI-first Senior Java Developer w Polska

• Experienced – 6-7 years of hands-on development in  Java/C#(a must).
• AI-Proficient – proven track record of working with AI in previous roles
• Fast & Fearless – You excel at troubleshooting, debugging, and fixing urgent issues under tight deadlines.
• Cloud-Savvy – Experience with  AWS is a strong advantage.
• Production-Oriented – You’re comfortable working in live environments, balancing speed with stability.
• A Problem Solver – You  think critically , act decisively, and thrive in high-pressure situations.
• A Priority-Driven Engineer – You understand business urgency and know how to  navigate shifting priorities without missing a beat.
• A Team Player – You communicate effectively, work collaboratively, and thrive in a  high-velocity environment.
• High Impact – Your work directly affects our customers’ business operations  in real-time.
• Fast-Paced & Exciting – Every day brings new challenges, high stakes, and meaningful wins.
• Problem-Solving at Its Best – Work on  complex, real-world issues that require creativity and fast execution.
• Work With the Best – Join a  top-tier global engineering team focused on  rapid problem resolution.

About the job

Matrix Eastern Europe, the offshore division of Matrix IT, one of the leading global R&D services companies with more than 11,000 professionals, is looking for a Senior Java Developer Engineer to join one of our teams

Our client's Escalation Team is the first line of defense for our most urgent customer needs. They handle top-priority issues, critical production bugs, and urgent feature requests—where every second counts. If you thrive under pressure, love solving complex problems in real-time, and can deliver high-quality solutions at speed, this is the role for you.

,[Own critical fixes & urgent requests – Investigate and resolve high-priority customer-reported issues in live production., Move fast & execute flawlessly – Work in a dynamic, Kanban-style environment where priorities shift rapidly., Be the go-to expert – Debug, troubleshoot, and resolve complex challenges with real business impact., Work cross-functionally – Collaborate with Product, Support, and R&D teams to diagnose, fix, and deploy solutions quickly., Enhance & stabilize production – Ensure the performance, scalability, and reliability of Stampli’s integrations and platform., Balance urgency with quality – Deliver rapid solutions without compromising long-term stability or maintainability., Be proactive – Identify recurring issues and contribute to preventative solutions that improve overall system health.] Requirements: Java, AI