Journeyman Software Developer - SECRET

Amentum; Fredericksburg (VA); On-site; USD 90,000 - 140,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Paid time off and holidays

Retirement benefits (401(k) matching)

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Starting bonus $2,000

Job summary

Amentum seeks Software Engineers to join the US Marine Corps advanced technology development team. The role entails coding, fixing defects, and optimizing performance in an Agile, DoD-focused R&D environment. Primary work locations are Fredericksburg, VA or Dahlgren, VA with occasional telecommute or travel.

Candidates must be US Citizens with a Bachelor's in CS/Math/Engineering or related field and 3+ years of experience, or a Master’s with 2+ years. A SECRET clearance is required to start.

Qualifications

• US Citizenship required.
• Bachelor's Degree in CS, Math, Engineering or related field, 3+ years experience or Master's with 2+ years.
• Ability to obtain SECRET clearance; no clearance required to apply.
• Two years of program/project level software design and development experience with sub-millisecond timing.

Responsibilities

• Create code and fix defects using Agile process for a complex software component.
• Measure processing time and optimize storage, network load and throughput for a DoD program.
• Design, code and maintain software support tools, testing and models.
• Primary location in Fredericksburg, VA or Dahlgren, VA with occasional travel.

Skills

US Citizenship

C++ or C#

Agile methodologies

Git/Bitbucket

Jira/Confluence

Security+ within 2 months

Education

Bachelor's Degree in Computer Science, Math, Engineering, or Related Field

Master's Degree in CS/Engineering/Math or Related Field

Tools

Git

Bitbucket

Jira

Confluence

Job description

We are looking for engineers to join our US Marine Corps advance technology development team. Are you a Software Engineer looking to be part of something that is truly unique - not just a job, but a mission? We are in search of a computer science major, with 3 years or more experience with software code, optimize and build updated code fixes for speed and efficiency in an R&D setting. This position has a key responsibility in running a test bench lab and ensuring testing is smooth. Amentum is the next generation of high-speed technology leadership to protect our nation, and the environments needed to support them. We need you to join us on the ground floor of some of the latest programs.

Responsibilities:

To create code and fix defects using an Agile process for a complex component of this weapon system using the software development life and test cycle.

To measure the computer processing time usage and come up with better methods of storage space utilization, network loading and process throughput for the DoD Program Office.

To enable designing, coding and maintenance of software support tools, testing and models.

Primary work location will be in Fredericksburg, VA or Dahlgren, VA (with occasional telecommute or travel opportunities.) We are fun, collaborative, supportive and our goal is to find great people who want to stay hands on in development yet have input in process improvements. We work hand in hand with the government customers in integrated teams. We take care of our people and joining Amentum means you are not joining one contract but a team of many contracts, providing unique job security.

No clearance required to apply, but the position requires a SECRET clearance to start. US Citizenship is required.

About Amentum:

Amentum is a leading global provider of technical and engineering services to government and commercial customers. We are dedicated to delivering innovative solutions to complex challenges in the defense, intelligence, and civilian markets. With 50,000 employees worldwide, we leverage our extensive experience, cutting-edge technology, and proven processes to provide exceptional value to our customers.

Essential Responsibilities:

Comprehensive knowledge in definition and management of software requirements, design, code, benchmark testing, debugging, software development lifecycle, architecture, and documentation. Plans, performs, and software design, coding, and testing.

Minimum Requirements:

US Citizen AND Bachelor’s Degree (in one of these in Computer Science, Math, Engineering, or Related Field) and 3 years of experience or Masters in one of these degrees and 2 years of experience.

Two years of program/project level experience of software design and:

Two years of experience performing detailed and complex software design and development meeting sub millisecond timing requirements;

Security clearance: ability to obtain a secret (no clearance required to apply).

US Citizenship is required for employment.

Preferred Qualifications:

C++ or C# 2 years (Preferred)

Experience in an Agile software development environment and methodologies

Atlassian tool suites, Jira (for issue tracking) and Confluence (decision tracking);

Source code tracking tools (i.e. Git, Bitbucket)

***The candidate will need to obtain Security+ within 2 months of starting the position ***

***The position offers a starting bonus of $2,000, contingent upon the earliest possible start date ***

Compensation Details:

$90,000-$140,000

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance

• Paid time off and holidays

• Retirement benefits (including 401(k) matching)

• Educational reimbursement

• Parental leave

• Employee stock purchase plan

• Tax-saving options

• Disability and life insurance

• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

09/15/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.