Senior Java Engineer

Recruitment for

Technologies we use

About the project

Your responsibilities

• Design and develop backend services for the new PAM platform
• Build services covering player wallets, transactions, ledger, payment flows, bonuses and account management
• Develop REST APIs and event-driven integrations
• Work with Kafka, RabbitMQ or similar messaging technologies
• Design solutions with strong transaction boundaries, idempotency and reliable failure handling
• Work with relational databases, including schema design, transactions, locking and query performance
• Write and maintain unit, integration and contract tests
• Contribute to technical discussions, RFCs and code reviews
• Instrument and operate the services you build using metrics, logging, tracing and alerting
• Participate in production support and on-call activities when introduced
• Support the migration from the existing third-party platform
• Use AI-assisted development tools as part of your engineering workflow

Our requirements

• 5+ years of professional backend engineering experience
• Strong hands-on experience with Java 17+
• Experience with Spring Boot or a similar modern Java framework
• Solid experience working with transactional systems where data integrity is critical
• Strong knowledge of PostgreSQL or another relational database
• Experience with event-driven architecture and messaging, preferably Kafka or RabbitMQ
• Good understanding of REST APIs
• Experience with testing practices including unit, integration, and contract testing
• Experience working with containers and CI/CD
• Strong engineering ownership and ability to take responsibility for the solutions you build
• Good written and spoken English

Optional

• Experience with AWS
• Experience with Kubernetes
• Background in iGaming, sports betting, fintech or another regulated, high-transaction-volume environment
• Experience with KYC/AML, responsible gaming or audit requirements
• Experience with AI coding assistants or agentic development workflows
• Polish and/or Spanish language skills

What we offer

• B2B or permanent employment contract (UoP)
• Approx. 28,000 PLN a month, depending on experience and expectations
• Company-provided MacBook
• Private medical care and benefits package
• Budget for hardware, tools and professional development
• Performance bonus
• Periodic team gatherings
• Optional access to the Kraków office
• A greenfield project with no legacy codebase for the new PAM platform
• The opportunity to be the first Java Engineer in Poland and have a real impact on the development of the new platform and local engineering team