Senior Estimator

Amentum is seeking a Senior Estimator working in our office in Hanover, MD. A Senior Estimator is responsible for leading the cost estimation process for complex projects across industries such as construction, manufacturing, and engineering. They ensure accurate, competitive bids are prepared, budgets are aligned with project scope, and cost control measures are in place throughout the project lifecycle.

• Cost Estimation Analysis:
  Review blueprints, plans, and specifications to prepare detailed time, cost, and labor estimates for materials, labor, equipment, and utilities.
• Data Research:
  Gather and analyze labor rates, material costs, production times, and location‑specific data to support accurate projections.
• Collaboration:
  
  Work closely with engineers, architects, contractors, suppliers, and project managers to ensure comprehensive estimates and alignment with project goals.
• Bid Preparation & Management:
  Prepare and coordinate full estimates for complex projects, manage pre‑qualification and pre‑bid submissions, and ensure timely bid delivery.
• Negotiation:
  Negotiate with vendors and subcontractors to secure best pricing and terms.
• Reporting & Communication:
  Present estimates to management, clients, and stakeholders, explaining assumptions, risks, and cost breakdowns.
• Process Leadership:
  Oversee estimating team activities, mentor junior estimators, and implement pricing strategies.
• Cost Control:
  Monitor project progress to ensure costs remain within budget, and update estimates as project scope or conditions change.
• Technology Use:
  Utilize estimating software (e.g., Pro Contractor, Sage Estimating, Aspen Capital Cost Estimator) for data analysis, forecasting, and budgeting.

• Education:
  
  Bachelor’s degree in civil/architectural engineering, construction management; 15 years of direct experience in lieu of degree will be considered.
• Experience:
  
  + 15 years of extensive hands‑on estimating experience in construction or related industries.
• Technical
  
  Skills:
  
  Proficiency in estimating software, Excel, and project management tools; strong research and proposal‑writing abilities.
• Soft Skills:
  
  Excellent analytical, communication, negotiation, and interpersonal skills; attention to detail and problem‑solving ability.
• Certifications:
  
  AACE, PMP, OSHA, or other industry‑recognized credentials may be preferred.

Compensation: $175,000

• 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

Original Posting: 07/30/2026 - 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.)

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.

If you need a reasonable accommodation for any part of the employment process, please contact us by email at  and let us know the nature of your request and your contact information. Requests for accommodation will be considered on a case‑by‑case basis. If you need assistance, please reach out to workday

For more than 100 years, Amentum has tackled the world’s toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA.

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