Estimator, Engineering, Mechanical Engineer

General & Mechanical Services
Annapolis, MD 21409, USA

The Estimator is responsible for estimating the material, labor, and subcontractor costs for the installation of Projects ranging from $0 to $1,000,000+ in costs; and working with company leadership on the final pricing.

A successful Estimator will maintain the target PROJECT BACKLOG VALUE while maintaining a high degree of ESTIMATING ACCURACY as measured by actual costs compared to estimated costs and achieving the assigned PROJECT SALES REVENUE GOAL by knowing market conditions. This position will report the Operations Manager

Position Overview

The MEP Estimator is responsible for independently preparing mechanical, HVAC, and/or plumbing estimates, technical proposals, cost models, and risk analyses for complex institutional and mission-critical projects.

Candidates must have 3-5 years of experience in the MEP disciplines (Mechanical, HVAC, or Plumbing). Experience does not need to be exclusively mechanical—strong plumbing or HVAC estimating experience is equally valuable.

Core Responsibilities

• Lead estimating efforts on assigned projects from kickoff through proposal delivery
• Perform detailed take-offs across mechanical, piping, HVAC, and plumbing scopes
• Conduct cost modeling, labor analysis, system comparisons, and historical evaluations
• Assist in risk evaluation, contingency modeling, and value engineering

Document, Design & Constructability Review

• Analyze plans, specifications, addenda, and coordination drawings
• Identify scope gaps, risk factors, and constructability issues
• Work with design/build teams on system selection, design‑assist efforts, and feasibility reviews
• Solicit, review, and level subcontractor proposals
• Assist in procurement, vendor buyouts, and material pricing strategy
• Participate in internal and client-facing estimate reviews
• Provide technical insight to Business Development and Project Management teams
• Contribute to scheduling, phasing, and logistical planning

Qualifications (Mid-Level Estimator)

• 3-5 years of MEP field experience, (Mechanical, HVAC, or Plumbing) experience ideally w/ estimating experience preferred
• Strong ability to read and interpret contracts, drawings, and specifications
• Experience with mission-critical or complex mechanical projects strongly preferred
• Proficiency in Excel and estimating tools
• Strong analytical, mathematical, and critical-thinking skills

Career Growth at GMS

The mid-level estimator role provides a path into:

• Preconstruction Manager
• Strategic Pricing / Systems Analyst
• Experience and 5 total years of trade experience
• Trade License preferred
• Strong written and verbal communication skills
• Technical knowledge
• Ability to read and interpret drawings and specifications

What’s in it for you:

• Salaried position up to $95k base DOE
• Competitive employee benefits with PTO
• Vehicle expense reimbursement
• Company provided cell phone and computer
• Great culture and core values
• Growth opportunities

General and Mechanical Services, a Crete United Company, is an equal opportunity employer, considering all applicants for employment regardless of race, color, religion, sex, gender identity, pregnancy, national origin, ancestry, citizenship, age, marital status, physical disability, sexual orientation, genetic information, or any other characteristic protected by state of federal law. Women and minorities are encouraged to apply.

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws.

For further information, please review the Know Your Rights notice from the Department of Labor.