Senior API Developer

General Dynamics Information Technology

. Modernize a legacy application using Spring Boot, Cloud and modern Java 17+, replacing legacy components with modular, testable and maintainable code .

Posted 10/15/2026full-timeRemote • United StatesSenior💰 $105,400 - $142,600 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in modernizing legacy applications using Spring Boot and Java 17+, with a strong focus on microservice architecture, REST API design, and ensuring regulatory compliance. Capable of mentoring junior developers and collaborating effectively in a remote team environment.

Highest-signal resume keywords

Java 17+Spring Boot EcosystemREST API DesignMicroservice ArchitectureJPA/Hibernate

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Core JavaSpring Data JPAJUnitMavenRelational Database DesignPerformance OptimizationAPI Testing ToolsGitDockerCI/CD

Soft Skills

Problem-SolvingCritical ThinkingCommunicationCollaborationTime Management

Tools & Technologies

Atlassian ConfluenceOpenAPI/SwaggerBrunoGitHubAI Tools

Certifications & Qualifications

EPA Public Trust Level 4

Industry Keywords

Regulatory ComplianceData ProtectionEvent-Driven PatternsScientific ApplicationsIntegrated IT Environments

Tech Stack

Tools & technologies

CloudDockerHibernateJavaJUnitMavenMicroservicesMockitoOraclePostgresRubyRuby on RailsSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Modernize a legacy application using Spring Boot, Cloud and modern Java 17+, replacing legacy components with modular, testable and maintainable code
Break down monolithic components into independent, loosely coupled modules and microservices
Ensure communication through REST and event-driven patterns
Integrate with existing EPA systems, databases and APIs
Ensure data consistency and regulatory compliance
Implement and enforce authentication, authorization and data-protection best practices
Develop comprehensive unit, integration and end-to-end tests
Conduct code reviews and mentor junior developers
Collaborate with EPA staff, contractors, GDIT developers, business analysts, API developers and data engineers
Document design and implementation techniques using Atlassian Confluence
Optimize services for performance, scalability and security
Resolve development and deployment issues
Support scientific applications and modern integrated IT environments

Requirements

What you’ll need

7+ years of related experience
Bachelor of Arts/Bachelor of Science
Core Java, version 17 and 21
Spring Boot ecosystem, including Spring Core, Spring Data JPA and repositories
Strong knowledge of REST API design using Spring controllers
JPA/Hibernate
Relational database design, including Oracle or PostgreSQL
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
OpenAPI/Swagger
Maven
Microservice architecture
Performance optimization
Strong problem-solving and debugging skills
Familiarity with CI/CD and Docker is a plus
Ruby on Rails is a plus
Must be able to obtain EPA Public Trust Level 4
US citizenship required
Ability to prioritize varied workloads with critical deadlines
Excellent critical thinking and problem-solving skills
Superior oral and written communication skills
Ability to communicate technical concepts to technical and non-technical stakeholders
Ability to work effectively in a remote team environment

Benefits

Comp & perks

Medical plan options, some with Health Savings Accounts
Dental plan options
Vision plan
401(k) plan with pre-tax and post-tax contributions and company match
Full flex work weeks where possible
Paid vacation, sick, personal, parental, military, bereavement and jury duty leave
Paid holidays
Typically 15 days of paid leave per calendar year for new employees
10 paid holidays per year
Up to 160 hours of paid family leave in a rolling 12-month period for eligible employees
Short- and long-term disability benefits
Life insurance
Accidental death and dismemberment insurance
Personal accident insurance
Critical illness insurance
Business travel and accident insurance
Remote work