Junior Systems Engineer

Amentum; Arlington (VA); On-site; USD 68,000 - 98,000; Full time

Benefits offered by this job

Health insurance

Paid time off & holidays

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum is seeking a junior-level systems engineer in Arlington, VA to support the PMX-311 Terminal Defense systems. You will coordinate engineering activities, support digital data management, and provide cross-functional inputs for program objectives.

Requirements include a STEM bachelor’s degree and 1–4 years of DoD/DoW experience, MS Office proficiency, and the ability to obtain a DoD Secret clearance. Travel is <10%. Salary range listed: $67,500–$97,500.

Qualifications

• Bachelor’s degree in STEM required.
• 1–4 years of engineering experience with DoD/DoW weapons programs preferred.
• Proficient in MS Suite and strong communication and organizational skills.

Responsibilities

• Provide systems engineering support for design, development, production, and in-service activities.
• Assist in digital transformation through management of engineering data.
• Provide cross-functional support to PMX-311 Production, In-service Contracting and Financial groups.

Skills

MS Office

Communication

Organizational skills

Detail-oriented

Cross-functional coordination

Education

Bachelor’s Degree in STEM

Job description

This position is contingent upon the identification of a candidate whose expertise meets our strategic needs, at which point a dedicated, funded opening will be established. We are proactively seeking a standout professional for whom we will finalize a formal role.

Amentum is seeking a junior-level systems engineer to provide dedicated engineering support to the Portfolio Acquisition Executive (PAE) for Munitions PMX-311 Terminal Defense systems (TDS), previously Program Executive Office (PEO) Integrated Warfare Systems (IWS) 11, development and engineering group in Arlington, Virginia. The PMX-311 Program Office is comprised of the US Navy Close-In Weapon System (CIWS), Directed Energy, Counter-Unmanned Aircraft Systems (C-UAS), Gun Weapon Systems (GWS), and the international cooperative Rolling Airframe Missile (RAM) program with Germany. We are looking for a qualified individual to support day-to-day activities of the PMX-311 engineering team.

Essential Responsibilities

• Provide systems engineering support for design, development, production, and in-service activities through coordination of various engineering group meetings and working groups

• Assist in digital transformation efforts through management of engineering group data

• Provide Cross-Functional Support to PMX-311 Production, In-service Contracting and Financial groups with engineering inputs for cross-functional planning, execution and product deliveries to meet program objectives

• Provide project management support producing schedules, tracking action items and recording meeting minutes

• Support management of PMX-311 engineering tasks with the engineering design agent and field activities

• Support software development efforts by recording technical team prioritization of new capabilities during Program Increment Planning Meetings (PIPs)

• Support development of briefing materials for engineering reviews and working groups

• Manage POC lists and provide coordination with PMX-311 supporting activities and German partners to schedule and coordinate meeting agenda topics, meeting location and objectives

Minimum Requirements

• Bachelor’s Degree in a Science, Technology, Engineering, or Math (STEM) discipline

• 1-4 years engineering experience with DoD/DoW weapons programs

• Proficient in MS Suite and good communication, organizational skills and the ability to perform detail-oriented work

• The ability to obtain an active DoD Secret U.S. Government Clearance. Note: U.S. Citizenship is required to obtain a Secret clearance.

Preferred Qualifications

• Familiarity and utilization of the latest Navy Technical Review Manual (TRM) v3.0 for US Navy weapon programs

• Prior experience with engineering and development on Navy Missile program(s)

• Prior experience utilizing Secure Internet Protocol Network Protocol Network (SIPRNet)

• An Active Secret U.S. Government Clearance

Travel

< 10%

Compensation Details:

$67,500 - $97,500

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:

08/25/2026 - 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.