Java API Developer

CGI•Fairfax, VA

20h•Hybrid

About The Position

CGI is seeking a Java API Developer to support the Digital Transformation Center (DTC) Integration Platform (DIP) - a secure, cloud-native API ecosystem that enables real-time data exchange between Salesforce and multiple enterprise systems. This role is part of a high-performing agile delivery team responsible for sustaining, enhancing, and securing a mission-critical integration platform operating at scale. As a Java API Developer, you will design, build, and maintain Java-based APIs and backend services that power dozens of live integrations. You will work closely with DevOps, QA, architecture, and product stakeholders to deliver reliable, secure, and high-performing services while meeting strict availability, compliance, and quality standards. This role can be performed hybrid at any CGI Federal office in the US, preferred locations: Fairfax, VA, Lebanon, VA, Belton, TX, Lafayette, LA, Knoxville, TN. Potential for remote. This contract requires a USC or Green Card Holder

Requirements

4+ years of professional Java development experience, with a focus on API or backend service development.
Strong experience with Spring Boot, Maven, JUnit, and Git-based workflows.
Hands-on experience developing RESTful APIs and working with JSON and HTTP-based integrations.
Familiarity with relational databases and SQL.
Experience working in Agile/Scrum delivery environments.
Ability to debug, triage, and resolve application-level issues in complex systems.
Strong communication skills and the ability to collaborate effectively within a distributed team.
Bachelor's degree in Computer Science, Engineering, or a related discipline, or equivalent experience.

Nice To Haves

Experience working with Federal agencies, particularly the Department of Veterans Affairs, is a plus.
Experience supporting or developing integration platforms or middleware-style solutions.
Familiarity with microservices architectures and distributed systems.
Exposure to AWS-based environments, CI/CD pipelines, or containerized deployments (Docker, Kubernetes).
Experience supporting production systems with uptime and SLA expectations.

Responsibilities

Design, develop, and maintain Java-based APIs and backend services supporting a large-scale integration platform.
Implement REST-based services using Spring Boot and established API design best practices.
Enhance and sustain existing APIs while contributing to the development of new integrations as business needs evolve.
Collaborate with cross-functional agile teams including DevOps, QA, and solution architects - to deliver end-to-end solutions.
Write clean, efficient, well-documented code and unit tests to ensure high code quality and reliability.
Participate in code reviews, sprint planning, backlog refinement, and technical design discussions.
Troubleshoot and resolve defects, performance issues, and integration failures in development and production environments.
Support platform stability and availability by adhering to operational and deployment standards.
Contribute to API documentation and technical artifacts required for ongoing platform sustainment and compliance activities