Senior Java Developer with Oracle SQL
Summary
Senior Java developer (8+ years) building scalable back-end services and REST APIs for an investment-banking client in Kraków, working with Spring Boot, Hibernate, and Oracle/PostgreSQL including SQL performance tuning, within agile Scrum/Kanban teams.
Project description
We are looking for a senior Java developer to join our client's team and contribute to the development of modern, scalable back-end services. You'll be part of a collaborative team focused on clean code, agile methodologies, and delivering high-quality solutions. The client is from the investment banking industry.
Responsibilities
- Design, develop, and maintain scalable back-end services and APIs using Java, Spring Boot, and SpringImplement data access using Hibernate and SQL, with attention to performance and maintainabilityAnalyze and tune SQL queries and database performance on Oracle (preferred) or PostgreSQLDefine and consume RESTful APIs, clearly communicating requirements and constraints across teamsTranslate business and product requirements into robust technical solutionsApply clean code principles and back-end best practices across the codebaseWrite and maintain automated tests (unit, integration)Participate actively in agile ceremonies (Scrum/Kanban), including refinement, planning, reviews, and retrospectivesPerform code reviews and contribute to continuous improvement of engineering standards and toolingWork closely with QA, product managers, and architects to ensure high-quality, business-aligned deliveriesSupport and improve existing applications in a fast-paced, enterprise investment-banking environment
SKILLS
Must have
- Minimum 8 years of professional experience as a Java developer, with a proven track record on long-term projectsStrong hands-on experience with Spring, Spring Boot, and HibernateStrong SQL skills, including query and performance tuningHands-on experience with Oracle (preferred) or PostgreSQLExperience in automated testing of Java applicationsClean coding skillsExcellent problem-solving abilitiesExperience in RESTful API designFamiliarity with agile development practices (Scrum, Kanban, etc.)Good communication skills and the ability to clearly state requirements to other teams
Nice to have
- agile development methodologies- investment banking domain knowledge as a big plus