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.
The role requires working from the office 5 days/week
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 – must have
• 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
• Sport card
• Employee psychological support program
• 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
• Mentoring program
• 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
• Additional childbirth 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.
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