Senior API Developer
GDIT· enterprise· Defense IT· Oct 15, 2026 · 13d ago
Any Location / Remote
Remote
Full-time
Senior
$105K–$143K
7+ years exp
Job description
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, GitHub, GitHub 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.
MEANINGFUL WORK AND PERSONAL IMPACT
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.
WHAT YOU’LL NEED TO SUCCEED
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 GitHub
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
Key Responsibilities:
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
Required Soft Skills/Organizational Skills Qualifications:
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 communications skills, and a demonstrated ability to maintain a patient and professional demeanor, with a can-do attitude.
Ability to communicate technical concepts clearly and professionally to both technical and non-technical parties (who may be key stakeholders).
Ability to manage equipment and services in remote locations.
Ability to work effectively in a remote team environment.
Workability to perform well under pressure.
Strong customer service orientation.
Ability to maintain an organized workflow, with a high degree of attention to detail.
EDUCATION AND EXPERIENCE:
Education: Bachelor of Arts/Bachelor of Science
Experience: 7–12 years in Java enterprise application development
The likely salary range for this position is $105,400 - $142,600. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
Scheduled Weekly Hours:
40
Travel Required:
None
T elecommuting Options:
Remote
Work Location:
Any Location / Remote
Additional Work Locations:
Total Rewards at GDIT:
Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. GDIT typically provides new employees with 15 days of paid leave per calendar year to be used for vacations, personal business, and illness and an additional 10 paid holidays per year. Paid leave and paid holidays are prorated based on the employee’s date of hire. The GDIT Paid Family Leave program provides a total of up to 160 hours of paid leave in a rolling 12 month period for eligible employees. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.
Our Identity Verification Process:
As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.
About Our Work:
We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.
Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc .
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
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Benefits
Benefits detected in the listing.
Dental
Vision
401(K)
Paid Time Off