Senior API Developer

Type of Requisition:
Regular

Clearance Level Must Currently Possess:
None

Clearance Level Must Be Able to Obtain:
None

Public Trust/Other

Required:

NACI (T1)

Job Family:
Software Engineering

Job Qualifications:

Skills:

API Development, Git Hub, Git Hub Copilot, PostgreSQL, Spring Boot

Certifications:

None

Experience:

7 + years of related experience

US Citizenship

Required:

Yes

Job Description:

Our 100% remote agile development team is looking for a Senior Microservices Developer to help us deliver top-quality development support for our Environmental Protection Agency (EPA) customers.

You will work directly with our government customers and with other GDIT developers and business analysts to create advanced software tools tailored to scientific applications. You’ll apply new approaches, principles, methods, techniques and tools compatible with the research environment within EPA. You’ll be a creative problem-solver, understand IT solutions from a users’ perspective and contribute to strategies for a modern integrated IT environment.

The API Developer requires in-depth knowledge of modular API design and persistence architecture using Spring Boot. The role involves collaborative interactions with EPA staff and contractors, ensuring architecture aligns with legacy systems and supports efficient data flow. The successful candidate will document design and implementation techniques using tools like Atlassian’s Confluence. The developer will optimize services for performance, scalability, and security while adhering to best practices.

The selected candidate will resolve development and deployment issues, working closely with API developers, data engineers, and other technical staff to ensure seamless integration with existing databases and applications.

Bring your engineering expertise along with a drive for innovation to GDIT. You must have:

• Technical skills (bolded items are hard requirements):
  • Core Java (version 17 and 21)
  • Spring Boot ecosystem including Spring Core, Spring Data JPA and repositories
  • A strong knowledge of REST API design using Spring controllers
  • JPA / Hibernate
  • Relational database design (Oracle, Postgres etc)
  • Junit / Mockito
  • Git and Git Hub
  • Must be able, and willing, to utilize AI tools (particularly, Copilot)
  • Understanding of API error handling, validation, logging and security
  • Bruno or other API testing tools
  • Open-API / Swagger
  • Maven
  • Microservice architecture
  • Performance optimization
  • Experience with government or regulated industry applications is a plus
  • Strong problem-solving and debugging skills
  • Familiarity with CI/CD, Docker (plus)
  • Ruby on Rails (plus)
• Security clearance level: must be able to obtain EPA Public Trust Level 4
• US citizenship required

• Modernization & Refactoring: Modernize a legacy application using Spring Boot, Cloud, and modern Java (17+), replacing legacy components with modular, testable, and maintainable code
• Microservices Architecture: Break down monolithic components into independent, loosely coupled modules/microservices, ensuring proper communication via REST and event-driven patterns
• Integration: Integrate with existing EPA systems, databases, and APIs, ensuring data consistency and compliance with regulatory requirements
• Security: Implement and enforce security best practices, including authentication, authorization, and data protection
• Testing & Quality: Develop comprehensive unit, integration, and end-to-end tests; conduct code reviews and mentor junior developers

• Ability to prioritize and complete a wide variety of tasking workloads with critical deadlines.
• Excellent critical thinking and problem-solving skills.
• Superior oral and written…