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Senior Java Developer

  • Job type Posted on: Jul 20, 2026
  • Experience level Marathon TS
  • Employment type Washington, District of Columbia
  • Employment type Onsite
  • Salary Full-time

Job Title :

Senior Java Developer

Job Type :

Full-time

Job Location :

Washington District of Columbia United States

Remote :

No

Jobcon Logo Job Description :

Senior Software Developer 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 or Permanent Resident (Greencard holder) 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 experience Marathon TS is committed to the development of a creative, diverse and inclusive work environment. In order to provide equal employment and advancement opportunities to all individuals, employment decisions at Marathon TS will be based on merit, qualifications, and abilities. Marathon TS does not discriminate against any person because of race, color, creed, religion, sex, national origin, disability, age or any other characteristic protected by law (referred to as "protected status").

Jobcon Logo Position Details

Posted:

Jul 20, 2026

Reference Number:

14660_9550B12C365FF85E38DDEF8AECEA9BB2

Employment:

Full-time

Salary:

Not Available

City:

Washington

Job Origin:

APPCAST_CPC

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Senior Software Developer 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 or Permanent Resident (Greencard holder) 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 experience Marathon TS is committed to the development of a creative, diverse and inclusive work environment. In order to provide equal employment and advancement opportunities to all individuals, employment decisions at Marathon TS will be based on merit, qualifications, and abilities. Marathon TS does not discriminate against any person because of race, color, creed, religion, sex, national origin, disability, age or any other characteristic protected by law (referred to as "protected status").

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