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Senior Java Software Developer

Company:
Marathon TS
Location:
Washington, DC
Pay:
135000USD - 155000USD per year
Posted:
February 21, 2026
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Description:

Job Description

Marathon TS is looking for a Senior Software Developer to support our efforts at DOD.

Essential functions:

Work in a full life-cycle software engineering project environment.

Bring new ideas, tools, services, and techniques to the group.

Use analytical thinking to make decisions based on facts and metrics whenever possible.

Demonstrate a desire to learn and accept new challenges within and outside of team.

Conduct thorough code reviews, implement unit and integration tests, and ensure code quality.

Stay up to date on assigned specialties, work on expanding to others.

Be willing to step up and lead initiatives at, or slightly above your title.

Follow ICF coding standards.

Foster asynchronous communication approaches and thrive in remote working environment.

Expected to own smaller efforts and components of larger projects.

What you must have:

Bachelor's degree in computer science, management information systems, mathematics, or equivalent experience.

5+ years of experience in full-stack software engineering with a strong understanding of best practices, design patterns, clean code, and unit/integration testing.

5+ years of experience with Java development including development of REST APIs using Spring Framework or Spring Boot.

5+ years of experience using relational databases including analyzing, writing, debugging, and maintaining complicated stored procedures (SQL Server and/or PostgreSQL preferred)

3+ years of experience in Frontend development with frameworks such as Angular or React (React preferred)

2+ years of experience working with REST APIs.

2+ years of experience with JPA, Hibernate, or equivalent ORM technologies.

1+ year of experience with Agile and Scrum methodologies, including sprint planning, stand-ups, and retrospectives.

Excellent communication skills both written and verbal.

Must be able to obtain and maintain a Public Trust.

MUST RESIDE IN THE United States (U.S.) and the work MUST BE PERFORMED in the United States (U.S.), as this work is for a federal contract and laws do apply

Must be US Citizen due to a federal contract requirements.

Preferred Skills:

Cloud implementation and migration experience (AWS preferred) and experience with Infrastructure as Code implementations using tools such as Terraform

Experience working with containerization with Docker

Experience with container orchestration using tools such as Kubernetes

Microservice Architecture, DevSecOps, and CI/CD pipeline experienceCompany Description

Marathon TS provides a full range of professional services for clients that require support from professionals with specialized skills and experience in a specific technical area or subject matter. Marathon TS also provides IT solutions, including strategy, operations, transformation and mission support.

Full-time

Fully remote

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