> Markdown version of [/jobs/ext/4621137-mechanical-engineer-3-mmc-with-security-clearance](https://www.wearedevelopers.com/jobs/ext/4621137-mechanical-engineer-3-mmc-with-security-clearance). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mechanical Engineer 3 - MMC with Security Clearance - **Company:** M.C. Dean, Inc. - **Location:** Hampton, VA, United States - **Experience:** Expert - **Salary:** $156,360.0 - **Contract:** Permanent contract - **Skills:** AutoCAD, Autodesk Revit, Building Information Modeling, Data Centers, System Programming, SC Clearance, Integration Tests - **Published:** November 7, 2026 - **Apply:** https://www.adzuna.com/details/5865215567 ## About the Role schedule, budget, and discipline coordination * Participate in and ensure successful project construction, start up and commissioning * Serve as Subject Matter Expert and perform quality control review of project documentation * Participate in new product evaluations and recommendations * Domestic and international travels on short-term assignments depending on project requirements Qualifications * Bachelor's Degree in Mechanical Engineering or equivalent engineering degree * 5+ years of progressively responsible professional experience * Ability to obtain a secret clearance with federal government * Strong application knowledge of ASHRAE Handbook and Standards * Working knowledge of SMACNA Technical Manuals and Standards * Licensed Professional Engineer * Excellent oral and written communication, interpersonal, problem solving and analytical skills * Design experience with governmental sites, data centers, and building infrastructure Preferred Experience & Skills: * Trane TRACE and/or Carrier HAP experience * Proficiency with the latest version of AutoCAD, Revit, and BIM experience * LEED accreditation * Certified Energy Manager (CEM) * Certified Lighting & Efficiency Professional (CLEP) ## Description Our people are passionate about innovation that improves lives and drives impactful change. Guided by our core values-agility, expertise, and trust-we foster a collaborative and forward-thinking work environment for employees to build long-term careers. Responsibilities As the Company continues to expand aggressively both domestically and internationally with increasing project size, scope and complexity, the need to recruit a Mechanical Engineer for the Critical Infrastructure solutions (CIS) business unit. Potential candidates for this position will serve as a Subject Matter Expert in the areas of design and specify mechanical and plumbing systems including but not limited to HVAC, Plumbing, Pumping, Industrial Equipment, and other system components contained within a variety of facilities. The Candidate will be expected to perform site survey, engineering design, and construction support as well as commissioning. * Establish design standards, specifications, and criteria for projects * Represent the Company in interactions with the customers, contractors, suppliers and collaborate with other project team members * Perform site survey, calculations, evaluations, equipment selection, equipment specification, system design, system layout for project proposal and contract execution * Develop sustainable designs for high performance systems for air and hydronic distribution, central heating and cooling plants and building management * Produce construction contract drawings and specifications consistent with contract requirements and Regulations, applicable industrial Codes and Standards * Address any mechanical design, fabrication, construction, and commissioning issues * Develop system sequence of operations, compliance matrices and other project support documentation * Participate in Pre-Installation Testing and Checkout (PITCO) processes including system programming, integration testing, and equipment build outs. * Develop mechanical project scope