Jr. Mechanical Engineer

Posted 3 Days Ago
Be an Early Applicant
Annapolis Junction, MD, USA
In-Office
75K-75K Annually
Junior
Security • Cybersecurity
The Role
Entry-level mechanical engineer to support HVAC and building design projects. Perform HVAC and heat-transfer design work, produce high-quality deliverables, use AutoCAD and MS Office, and work full-time onsite. Must be US citizen, 0–3 years experience, able to obtain/maintain security clearance.
Summary Generated by Built In

Amentum is seeking an entry level mechanical engineer interested in HVAC and building design for our Annapolis Junction. The candidate should have a demonstrated record of achievement and work ethic to join this high performing group committed to delivering consistently high-quality work and service to our clients.

Required Qualification:

1. Degreed Mechanical Engineer from an ABET accredited engineering program.

2. Must be a US Citizen.

3. Zero to three years of experience in HVAC and building design with understanding of HVAC and heat transfer principles.

4. Full-time in the office. Hybrid and remote work are not practical for this position.

5. Good working knowledge of MS Office suite of software including Outlook, Word, Excel, PowerPoint, Paint.

6. Must be competent with AutoCAD. Desirable to have a working knowledge of Revit.

Ability to obtain/maintain a security clearance.

       

Compensation Details:

$75,000

       

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.


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:

07/31/2026 - 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

  • Degreed Mechanical Engineer from an ABET accredited engineering program.
  • Must be a US Citizen.
  • Zero to three years of experience in HVAC and building design with understanding of HVAC and heat transfer principles.
  • Full-time in the office; hybrid and remote work are not practical for this position.
  • Good working knowledge of MS Office suite including Outlook, Word, Excel, PowerPoint, Paint.
  • Must be competent with AutoCAD.
  • Working knowledge of Revit.
  • Ability to obtain/maintain a security clearance.
  • Demonstrated record of achievement and strong work ethic.

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.

Amentum Insights

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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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