Senior Java Backend Developer
Description
We are seeking an experienced Developer to join our consulting team for a high-impact modernization project. The role involves upgrading a mission-critical application’s technical stack to ensure scalability, compliance, and long-term maintainability. The ideal candidate will have hands-on experience with Java enterprise application upgrades and a strong understanding of middleware, ORM frameworks, and build tools.
Job responsibilities: • Perform a technical upgrade of the banking application, including: • Analyze existing application architecture, dependencies, and configurations to identify upgrade impacts. • Refactor and optimize code as needed to ensure compatibility with new versions. • Collaborate with architects, QA, and DevOps teams to ensure smooth integration, testing, and deployment. • Document upgrade steps, migration guidelines, and technical challenges/resolutions. • Support knowledge transfer and provide guidance to client technical teams’ post-upgrade.
Required qualifications to be successful in this role: • 5+ years of Java development experience in enterprise environments. • Proven experience with application upgrade/migration projects in large-scale, mission-critical systems. • Solid understanding of enterprise integration patterns, deployment pipelines, and performance tuning. • Strong problem-solving and debugging skills. • Experience in the banking or financial services industry is a plus. • Ability to work five days a week in one of CGI’s offices in Poland
- this is a must • Flexibility to work until 1pm ET (7pm CET) occasionally and as needed
Nice-to-Have Skills: • Familiarity with JPA specifications and persistence migration best practices. • Exposure to containerization and cloud platforms (e.g., OpenShift, Kubernetes, AWS, Azure). • Knowledge of CI/CD pipelines and modern DevOps practices. • Strong communication and consulting skills for client-facing interactions.
Our attractive offer contains: • Work from our office in Warsaw/Wroclaw/Torun • Healthcare / Medicover paid by CGI with a free dental package • Share purchase plan co-financed by CGI, with the possibility of cashing at any time • Annual bonus plan, depending on the annual financial results • Rewarded referral program, minimum PLN 6k for recommendation • Be Consultant program, thanks to which you have the opportunity to strengthen your competences • Possibility of accounting for creative work (author's tax-deductible costs) • Attractive training program - Brown Bags, hackathons and knowledge sharing • Additional insurance - life, accident and serious illness insurance
About us
CGI is a global IT and business process services provider delivering high-quality business consulting, systems integration and outsourcing services. With over 77500 professionals in 40 countries, of which nearly 300 in Poland in 3 cities, CGI is a world leader in transforming innovation, information and technology to the success of our customers. A combination that opens many and flexible career paths.
Skills:
English, Hibernate, Java, Maven