Senior Mechanical Engineer - Hybrid Washington, DC
Parsons
Remote · Centreville, VA · Posted June 11, 2026
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Pay compared with the market
This listing does not state pay. Across 80 open senior mechanical engineer listings that state pay, the middle half runs $150,000 to $173,000 and the median is $164,000.
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How AI is used in this kind of work
AI use among mechanical engineers is little observed so far. Measured exposure for mechanical engineers: 8% (little observed).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
Parsons has filed 5 layoff notices in the last twelve months, covering 94 workers, most recently October 2026. These are public filings with state labor departments, and an open role can sit alongside them. See the filings
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About the job
In a world of possibilities, pursue one with endless opportunities. Imagine Next!
At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.
Job Description:
Parsons is looking for an amazingly talented Senior Mechanical Engineer to join our team! In this role, you will get to use your mechanical engineering skills to focus on HVAC, plumbing, fire suppression and/or facility systems to support Critical Infrastructure projects.
What You'll Be Doing:
Demonstrate a range of technical capabilities with experience in Mechanical Engineering and design, and development of contract documents (design reports, analysis reports, calculations, drawings, specifications, etc.).
Lead or assist in the definition of mechanical project scope
Performs site surveys of existing facilities for as-built document generation, rehabilitation designs, and for construction support of new facilities. Adherence to a Zero-Incident safety goal is expected.
Establish user requirements, analyze system functional and performance requirements, and define design criteria
Develop appropriate mechanical HVAC, plumbing, and fire protection design schemes.
Prepare and interpret engineering calculations including heat load and hydraulic calculations, and perform system analyses
Prepare equipment sizing while ensuring that all analyses satisfy user and system requirements
Provide input to other disciplines within the project design team on mechanical requirements for layouts and project designs
Conduct interface management between related systems and disciplines.
Prepare technical specifications including input received from other project disciplines
Prepare and contribute to technical memos and reports
Prepare or provide input to 3D models and 2D mechanical drawings. Utilization of CAD and/or Building Information Modeling design software is expected.
Participate in and contribute to design reviews
Assist in the compilation and delivery of monthly engineering status reports
Reviewing and approving mechanical system drawings, specifications, and construction documents for accuracy and completeness.
Assist with requests for information, field design changes, and nonconformance reports raised during the construction phase
Guide and mentor more junior engineers
What Required Skills You'll Bring:
4-year degree in Mechanical Engineering
Profession registration and/or Masters Degree.
8+ years of project engineering/design experience in buildings HVAC, Plumbing and Drainage, and Fire Protection
Experience in the use of Building Information Modeling (BIM), Computer Aided Design (CAD), scheduling software, or file management software is a plus. Working knowledge of REVIT, AutoCAD, MicroStation, Trane Trace, MathCAD, and/or other software packages typically associated with engineering.
Working knowledge of industry standards (NFPA, ASHRAE), regulations, and codes (International Code Council) pertinent to the infrastructure mechanical engineering discipline
Excellent communication skills, both verbal and written, with the ability to collaborate effectively in a team environment.
Experience in sustainable design practices and LEED certification is advantageous.
Willingness to learn, develop and apply new techniques, standards, and processes.
Ability to delegate tasks and effectively supervise engineers and designers.
Candidate should be capable of working in a self-directed manner with minimal oversight.
What Desired Skills You'll Bring:
Experience in LRT, Metro, or Railway /transit design projects is beneficial.
Experience with greenfield and brownfield interfaces, including constructability experience
Security Clearance Requirement: None
This position is part of our Critical Infrastructure team.
For more than 80 years, our experts have designed and delivered the critical infrastructure that connects and protects communities around the world. We work in collaborative teams, both within the company and with our partners and customers, to plan, design, build, and modernize infrastructure. We take special pride in projects and solutions that improve communities as well as people’s quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency. Powered by our people, we provide the imagination necessary to support our customers’ visions—and to help them see what's next!
Salary Range: $88,400.00 - $154,700.00
We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, Employee Stock Ownership Plan (ESOP), 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!
This position will be posted for a minimum of 3 days and will continue to be posted for an average of 30 days until a qualified applicant is selected or the position has been cancelled.
Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.
We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest—APPLY TODAY!
Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer to https://www.parsons.com/fraudulent-recruitment/ .