Java Engineer

The role is within a fintech project focused on an administrative portal for the financial industry, designed to manage clients and billing processes.

• At least 5 years of professional experience in Java development.
• Strong knowledge of: Java 21+, Spring Boot, REST APIs, Hibernate/JPA, relational databases (MS SQL Server or similar), design patterns, and software engineering best practices.
• Hands-on experience with refactoring and modernizing existing systems.
• Knowledge of integration technologies and protocols (REST, SOAP).
• Experience with containerization technologies (Docker, Kubernetes).
• Strong analytical thinking skills and ability to independently propose effective solutions.
• Experience working in Agile environments (Scrum/Kanban).
• Good command of spoken and written English and Polish.
• Excellent communication skills and ability to collaborate effectively with both technical and business teams.

Nice to have:

• Experience with Angular (or other front-end frameworks).
• Experience integrating with SAP systems.
• Experience with cloud platforms (Azure is a strong advantage).
• Knowledge of CI/CD pipelines and DevOps practices.
• Understanding of API Gateway concepts, JWT tokens, OAuth 2.0, OpenID Connect (OIDC), and API lifecycle management.
• Experience working with API Management and Identity & Access Management (IAM) solutions.
• Experience in the financial industry or with billing systems.

• Development and maintenance of services responsible for billing processes and client configuration.
• Modernization and refactoring of legacy services supporting client management.
• Collaborating with the software architect to define the system's long-term technical direction.
• Analyzing issues and proposing technical and process improvements.
• Participating in code reviews and ensuring high code quality.
• Working closely with both business and technical teams to plan future stages of the platform's development.
• Mentoring junior team members and actively sharing knowledge.