Jr. Mechanical Engineer

Amentum is seeking a junior mechanical engineer interested in HVAC and building design for our Annapolis Junction, Maryland office. 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.

• 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 of software including Outlook, Word, Excel, PowerPoint, Paint.
• Must be competent with AutoCAD. Desirable to have a working knowledge of Revit.

Ability to obtain/maintain a security clearance.

$76,000-$83,000

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.

• 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.

01/08/2026 - 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.