C Software Engineer Jobs in Illinois (NOW HIRING)

Amentum is seeking software engineering professionals with software development-related education and/or experience to support C/C++ software development and integration in support of Naval projects in Dahlgren, Virginia. This position is on-site in Dahlgren, VA, where Amentum has provided support to the customer for over 60 years.

You will be part of our growing systems and software engineering team and contribute your diverse skills across multiple software contracts in support of our Software Center of Excellence. We are looking for individuals to join our team atmosphere who are eager to make a difference by solving complex Digital Engineering challenges. Apply your skills to the latest DoW weapons and sensor systems, modernizing the Navy and contributing to mission success.

• Perform software development and integration using C/C++ in support of Naval projects and programs.
• Conduct software development within the Submarine Launched Ballistic Missile (SLBM) weapon system.
• Primarily support a Senior Amentum developer in development using Agile development principles.
• Apply knowledge and experience with C and C++ in support of software development activities.
• Perform analysis and problem-solving techniques in support of professional scientific and engineering work.
• Work independently and with others within established teams and across organizations to meet established goals within schedule-driven timelines.

• 0–10 years of experience.
• Bachelor’s degree in computer science, physics, mathematics, engineering, or another applicable technical field, or equivalent experience in lieu of the education requirement.
• Familiarity with Agile Development.
• Successful candidates must possess excellent communication skills and be able to interact directly with customers and engineering personnel.
• Must have an active Secret U.S. Government clearance. U.S. citizenship is required to maintain a Secret clearance.
• Candidate must maintain a valid REAL ID driver’s license, required for access to the customer site, and have access to reliable transportation, as this position requires occasional travel between local work sites during the week.

• Experience across multiple programming languages, including C and C++.
• A mathematics background is a plus.
• Experience with Git/Jenkins is also a plus.

US: $80,000 to $100,000

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.

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.

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.

08/27/2026 - 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.