Junior Systems Engineer

Posted Yesterday
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Arlington, VA, USA
In-Office
68K-98K Annually
Junior
Security • Cybersecurity
The Role
Provides systems engineering and project management support for Navy Terminal Defense Systems, including design, development, production, and in-service activities. Coordinates engineering meetings, working groups, schedules, action items, technical priorities, briefings, partner communications, and engineering data. Supports cross-functional planning, software development efforts, engineering design agents, field activities, and German program partners. The role requires a STEM bachelor’s degree, weapons-program engineering experience, and eligibility for a DoD Secret clearance.
Summary Generated by Built In

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.

Skills Required

  • Bachelor’s degree in a Science, Technology, Engineering, or Math discipline
  • 1–4 years of engineering experience with DoD or DoW weapons programs
  • Proficiency in Microsoft Office Suite
  • Good communication and organizational skills
  • Ability to perform detail-oriented work
  • Ability to obtain an active DoD Secret U.S. Government clearance
  • U.S. citizenship required to obtain a Secret clearance
  • Familiarity with the U.S. Navy Technical Review Manual TRM v3.0
  • Prior engineering and development experience on Navy missile programs
  • Prior experience utilizing SIPRNet
  • Active Secret U.S. Government clearance

Amentum Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Amentum and has not been reviewed or approved by Amentum.

  • Healthcare Strength Healthcare offerings are described as comprehensive, with medical, dental, and vision plans and multiple PPO/HSA options. Mental health support via an employee assistance program and other wellness resources is also included in the benefits mix.
  • Retirement Support Retirement support is positioned as a meaningful part of total rewards through a 401(k) plan with employer matching. Profit-sharing contributions and immediate or near-term vesting in some cases further strengthen the retirement value proposition.
  • Leave & Time Off Breadth Time-off benefits are presented as solid for the sector, including tiered PTO accrual by tenure and a set of paid holidays. Role-dependent flexible or remote work options and leave programs add to perceived work-life support.

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The Company
HQ: Chantilly, VA
18,261 Employees

What We Do

Amentum is a premier global technical and engineering services partner supporting critical programs of national significance across defense, security, intelligence, energy, and environment. We draw from a century-old heritage of operational excellence, mission focus, and successful execution underpinned by a strong culture of safety and ethics. Headquartered in Germantown, Md., we employ more than 20,000 people in 48 states and 28 foreign countries and territories. Visit us at amentum.com to explore how we deliver excellence for our customers’ most vital missions.

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