Entry Level Software Engineer

Amentum

Fredericksburg, VA · Dahlgren, VAunknown$75,000–$90,000Posted Oct 21, 2026

About the role

Amentum is looking for Software engineers to join our USN advance technology development team. Someone to code, optimize and build software speed and efficiency in an R&D setting. Primary work location will be in Fredericksburg or Dahlgren, VA with occasional telecommute or travel opportunities.

Software engineer Responsibilities Include:

Developing graphical user interfaces for local tools with the team of users.

Developing software updates using C++, Rational Team Concert, GitLab and other DevOps tools

Supporting test events through travel opportunities.

Minimum Qualifications:

Bachelor’s degree in one of the following disciplines: Engineering, Math, Computers Science, and/or Physics with entry level experience.

Must have an Active Secret US Government Clearance. Note: US Citizenship is required to maintain a Secret

Knowledge in definition and management of software requirements, design, code, benchmark testing, debugging, software development lifecycle, architecture, and documentation.

Plans, performs, and leads software design, coding, and testing.

Experience in an Agile software development environment and familiarity with Agile methodologies

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

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

C++ or C# (Preferred)

Ability to Commute: to Fredericksburg or Dahlgren, VA (1 hour south of Washington D.C.)

Candidates must maintain a valid Real ID driver’s license required for access to customer site and have access to reliable transportation (rideshare options such as Uber, Lyft etc. are not permitted) as this position requires occasional travel between local worksites during the week.

Benefits and Perks

Health, Vision, and Dental

401K with match

Tuition Reimbursement

Wellness Program

Growth opportunities and career progression

Various company discounts

Basic life and AD&D insurance

Paid time off

Flexible Holidays

Parental Leave

Compensation Details:

75K to 90K

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:

10/21/2026 - 10/22/2026

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.

Responsibilities

  • Develop graphical user interfaces for local tools in collaboration with users.
  • Develop and update software using C++, Rational Team Concert, GitLab, and other DevOps tools.
  • Support test events, including occasional travel.

Qualifications

  • Bachelor’s degree in engineering, mathematics, computer science, or physics.
  • Active Secret clearance; U.S. citizenship is required to maintain the clearance.
  • Knowledge of software requirements, design, coding, benchmarking, testing, debugging, architecture, documentation, and the software development lifecycle.
  • Experience with Agile software development and familiarity with Agile methodologies.
  • Familiarity with Atlassian tools, including Jira and Confluence, and source code tools such as Git or Bitbucket.
  • C++ or C# experience preferred.
  • Ability to commute to Fredericksburg or Dahlgren, Virginia, and travel between local worksites as needed.
  • Valid Real ID driver’s license and reliable transportation.

Benefits

  • Health, dental, and vision insurance
  • 401(k) with matching
  • Tuition reimbursement
  • Wellness program
  • Paid time off and flexible holidays
  • Parental leave
  • Life and AD&D insurance
  • Employee stock purchase plan
  • Tax-saving options
  • Pet insurance
  • Growth opportunities and career progression
  • Company discounts

Skills mentioned

C++C#Frontend DevelopmentSystem DesignDebuggingPerformance OptimizationGitDevOpsSoftware TestingPerformance Testing

About Amentum

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

Defense and Space Manufacturing10,001+ employeesChantilly, Virginia

H-1B sponsorship history

Historical employer filing data was found for Amentum. The employer record includes 7 historical certified applications. This is employer-level history, not a guarantee that this role currently offers sponsorship.