About the project

• We’re seeking a highly experienced Java specialist to take a leading technical role in the continued development and modernization of a large-scale backend platform used internationally. This is a senior-level position with broad responsibility for architecture design, system quality, and collaboration with engineering and business teams.
• Looking for a role where your architectural experience is truly valued? Let’s talk.
• Tech environment: Java 8 / Java 17, Spring (Core), Hibernate, EclipseLink, Oracle, PL/SQL, RESTful APIs, SOAP, Tomcat / Tomee, JSP, Struts (legacy), GitHub, TeamCity, JUnit

Your responsibilities

• Shaping and evolving the architecture of backend systems, focusing on long-term maintainability and performance
• Preparing and maintaining technical documentation and architectural guidelines
• Collaborating closely with developers on implementation strategies, reviews, and hands-on support when needed
• Participating in technical analysis and proposing scalable solutions for business requirements
• Establishing and promoting best practices in software quality, security, and maintainability
• Choosing appropriate tools and technologies for continuous improvement of the tech stack
• Troubleshooting and resolving complex issues, including performance bottlenecks
• Sharing expertise across the team and supporting the development of less experienced engineers
• Contributing to the definition of the technical roadmap and participating in architecture board meetings

Our requirements

• Minimum 10 years of professional experience in backend development with Java
• Experience in similar senior roles (e.g. Software Architect, Tech Lead, Principal Engineer)
• Excellent knowledge of Spring, Hibernate, Oracle/PLSQL, and integration patterns (REST/SOAP)
• Solid understanding of Docker, Linux, and cloud services – ideally AWS
• Comfort in working with both legacy code and modernizing complex systems
• Strong communication skills – ability to work closely with business stakeholders, lead discussions, and explain technical decisions
• Confidence in presenting and defending architectural choices in an international context
• Very good command of English (C1 level) – both spoken and written
• Willingness to join the office once a week (Katowice – hybrid model)
• Openness to work across the stack (e.g. understanding frontend architecture or collaborating with frontend teams – React is used internally)

Technologies we use

What we offer

• You’ll be part of a mature, international engineering environment

• Your expertise will have real impact on the direction and quality of key systems

• No chaos – clearly defined scope, well-structured onboarding, and transparent collaboration

• You’ll have access to a personal learning and development budget

• Hybrid setup with a regular rhythm and face-to-face time once a week