Computer Science Intern Jobs in California, MD (NOW HIRING)

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 an /computer science major, with 3 years or more experience to code, optimize and build updated code fixes for speed and efficiency in an R&D setting. 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 disk space utilization, network loading and throughout.
To enable designing, coding and maintenance of software support tools and models.
Primary work locations 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 job security.
No clearance is required to apply, but 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.
Basic Qualifications:
Bachelor's Degree (in one of these in Computer Science, Math, Engineering, or Related Field) and 3 years of experience or a Master's Degree in Computer Science/Engineering or EE and 2 years' experience.
Comprehensive knowledge in definition and management of software requirements, design, code, benchmark testing, debugging, software development lifecycle, architecture, and documentation. Plans, performs, and lead software design, coding, and testing. C++ proficiency.
Experience in an Agile software development environment and methodologies
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.
Atlassian tool suites, Jira (for issue tracking) and Confluence (decision tracking);
Source code tracking tools (i.e. Git, Bitbucket)
Experience:
2-4 years (Required)
C++ or C# 2 years (Required)
Security clearance: ability to obtain a secret (no clearance required to apply). US Citizenship is required for employment.
Ability to Commute: to Fredericksburg, VA or Dahlgren, VA (1 hour south of Washington D.C.)
We provide:
- Industry leading benefits
- 401k % pay per period plan, matching up to 6% of employees contributions (Roth or traditional)
- Pregnancy and parental leave up to 10 weeks
- Growth opportunities
- Wellness programs and Company Discounts
- Medical, dental, and vision insurance premiums and related expenses (HDHP, PPOs, regular HMOs, preventative medical plans).
- Basic life and AD&D insurance
- Leave benefits
- Hybrid in-office / work from home environment
- Job Type: Full-time
- $90,000 - $105,00 per year depending on years of experience and additional degrees
- Life insurance
- Paid time off/ 10 holidays a year
- Parental leave
Schedule:
Monday to Friday
Compensation Details:
$90,000-$105,280
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:
05/12/2026 - 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.