Backend Java Developer (f/m)

We are an international team developing systems for savings and investment products, including applications supporting taxation, account management, and investment processing.

• Strong commercial experience with Java and Spring Boot.
• Practical experience with Hibernate.
• Very good knowledge of relational databases, particularly PostgreSQL and SQL.
• Experience in designing and developing APIs using OpenAPI.
• Practical knowledge of Apache Kafka or similar messaging technologies.
• Understanding of reliable message processing including retries, idempotency, error handling, dead-letter queues, message ordering, and monitoring.
• Experience with Jenkins and CI/CD processes.
• Very good knowledge of Git.
• Ability to model complex business logic and design maintainable solutions.
• Experience in software testing and ensuring high code quality.
• Readiness to conduct code reviews, mentor developers, and act as a design sparring partner.
• Ability to cooperate effectively with analysts and business stakeholders.
• English proficiency sufficient for daily work in an international environment.

Nice to have:

• Experience in the banking, financial services, investment, or pension sector.
• Knowledge of AsyncAPI, JMS, or MQ.
• Experience developing calculation engines or systems based on complex business rules.
• Practical and responsible use of AI-assisted software development tools.
• Experience with Java 21.

• Design, develop, and maintain backend applications using Java.
• Develop solutions supporting savings and investment products.
• Build robust calculation engines compliant with tax regulations across multiple countries.
• Implement complex business processes and integrations with external institutions, including tax authorities.
• Develop customer-facing reporting functionalities.
• Participate in full software development lifecycle including requirements analysis, design, coding, testing, and deployment.
• Cooperate with financial analysts to translate business requirements into technical solutions.
• Conduct code reviews, mentor other developers, and contribute to technical design decisions.
• Promote practical engineering standards and best practices across the team.
• Use AI-assisted development tools and automation responsibly to improve productivity, quality, and continuous learning.

The work must be performed from Poland; working from abroad is not possible.