Senior API / Microservices Developer

General Dynamics Information Technology; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

AI career advancement tools

Internal mobility support

Comprehensive benefits & PTO

401K with company match

Full-flex work week

Job summary

General Dynamics Information Technology is seeking a Senior API/Microservices Developer for a 100% remote agile team supporting EPA projects. You will design modular APIs, modernize legacy systems, and ensure secure, scalable data flows across systems.

Collaboration with EPA staff, engineers, and analysts is expected to deliver high-quality software tools in a regulated environment. Required skills include Core Java, Spring Boot, REST design, JPA/Hibernate, and API testing.

Qualifications

• Bachelor's degree required; 9–12+ years Java enterprise development.
• Strong foundation in modular API design and persistence architecture.
• Experience with government or regulated environments is a plus.

Responsibilities

• Modernize legacy apps with Spring Boot, Cloud, and modular code.
• Decompose monoliths into microservices with REST and events.
• Integrate with EPA systems, ensure data consistency and regulatory compliance.
• Apply security best practices across authentication and data protection.
• Develop comprehensive tests and mentor junior developers.

Skills

Core Java (version 21)

Spring Boot ecosystem

REST API design (Spring controllers)

JPA / Hibernate

Relational DB design (Oracle)

JUnit / Mockito

Git and GitHub

AI tools (Copilot)

API testing tools (Bruno)

OpenAPI / Swagger

Maven

Microservice architecture

Performance optimization

Security clearance readiness (EPA PTL4

US citizenship

Education

Bachelor of Arts/Bachelor of Science

Tools

Confluence

Copilot

OpenAPI/Swagger

Jira

Job description

Our 100% remote agile development team is looking for a Senior API/Microservices Developer to help us deliver top-quality IT Modernization 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 / Microservices 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 21)
  • Spring Boot ecosystem including Spring-data repositories
  • A strong knowledge of REST API design using Spring controllers.
  • JPA / Hibernate
  • Relational database design (Oracle, etc)
  • Junit / Mockito
  • Git and GitHub
  • Must be able, and willing, to utilize AI tools (particularly, Copilot)
  • 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
• 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: 9–12+ years in Java enterprise application development

GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

• Growth: AI-powered career tool that identifies career steps and learning opportunities
• Support: An internal mobility team focused on helping you achieve your career goals
• Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
• Flexibility: Full-flex work week to own your priorities at work and at home Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY

Explore a career in software development at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your dedication to advancing innovation.