Software Engineer Internship Jobs in California, MD

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. Headquarters in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.
We are seeking a dedicated and results-oriented Software Engineer to join our high-performing team supporting Undersea Warfare (USW) software development projects for Naval Surface Warfare Center (NSWC) Dahlgren Division, H20. If you're passionate about cutting-edge technology and contributing to national defense initiatives, this is an exciting opportunity to make an impact.
What You'll Do:
As a Software Engineer, you'll work at the forefront of advanced undersea warfare technology, contributing to mission-critical systems that shape the future of defense.
Your responsibilities will include:
Collaborating with a talented development team: Work in a tight-knit, agile environment to develop solutions for Foreign Military Sales (FMS) Fire Control Systems.
Creating and refining code: Use your technical expertise to design, improve, and maintain cutting-edge software systems.
Providing valuable project insights: Attend weekly meetings with leadership to provide status reports and ensure timely progress.
Problem-solving and proactive communication: Identify potential challenges and opportunities early and collaborate with leadership to address them effectively.
Onsite teamwork: Be part of a dynamic environment onsite at **NSWC Dahlgren**, where innovation is at the heart of everything we do.
What You Bring to the Table:
We're looking for a strong technical professional who meets these minimum qualifications:
-A bachelor's degree in engineering, computer science, or another technical discipline from an accredited college or university.
-5+ years of experience in software development, including analysis, design, testing, and maintenance.
- Proficiency in one or more of the following high-level programming languages: C/C++, Java, or Ada.
- Knowledge of the RedHat operating system and experience with UNIX/Linux tools and utilities.
- Experience with track modeling, time algorithms, and implementing inter-process communications using TCP/IP sockets.
- U.S. Citizenship with an Active SECRET U.S. Government Clearance (required).
What Sets You Apart:
While not required, the following qualifications will make you stand out as an exceptional candidate:
- Experience designing, developing, and documenting computer programs for surface ship-related systems*using high-order languages across a range of systems.
- Expertise in designing simulation systems, situational awareness systems, or systems that interface with tactical systems.
- Ability to collaborate in fast-paced, team-based environments to deliver high-quality technical solutions.
- Experience working with Agile development methodologies in dynamic, multi-stakeholder environments.
- Proficiency in developing software in multi-threaded/multi-process environments with demonstrated success in implementation.
- Experience with:
- Unified Modeling Language (UML) for designing and documenting complex object-oriented systems.
- Testing software in diverse hardware configurations.
- Using tools and frameworks, including NetBeans IDE, VxWorks, CORBA, Extensible Markup Language (XML), and HTML for system documentation.
- Programming hardware drivers and firmware.
- Using the Generic Data Extraction Analysis and Reduction (GeDEAR) framework.
Why Join Us?
At Amentum, we are committed to fostering innovation and contributing to national security. When you join our team, you will:
- Work with some of the brightest minds in the industry tackling mission-critical, cutting-edge challenges.
- Be part of a collaborative, tight-knit team where you'll work alongside talented engineers and leadership who value your contributions.
- Enjoy competitive compensation, comprehensive benefits, and opportunities for growth.
- Be part of a team making a tangible impact on our world.
How to Apply
Are you ready to make a difference? Apply today and connect with us to learn more about this incredible opportunity.
We look forward to welcoming you to the team at **NSWC Dahlgren** and working together to advance Undersea Warfare innovation!
Compensation Details:
$120K to $140K
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:
05/18/2026 - 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.