Mechanical Engineer; Engineer IV

Position: Mechanical Engineer (Engineer IV)
Salary : $87,024.91 - $ Annually
Location : FX. CTY. GOVERNMENT CENTER, 12000 GOVERNMENT CENTER PKWY., FAIRFAX (EJ32), VA
Job Type: FT Salary W BN
Job Number: 26-00831
Department: Facilities Management
Opening Date: 05/30/2026
Closing Date: 6/26/2026 11:59 PM Eastern
Pay Grade: S29
Posting Type: Open to General Public

Job Announcement

$5,000 Sign-On Bonus*
This position includes a sign-on bonus of $5,000 for new county hires.

We are seeking a highly skilled senior mechanical engineer / project manager to lead the development and execution of complex capital and non-capital projects in occupied county facilities. This role provides senior level leadership under the general direction of the project coordinator (principal engineer) and/or the division director of Design, Engineering, and Construction.
The successful candidate will manage large scale or multiple simultaneous mechanical, HVAC, plumbing, and building automation projects that require close coordination across county departments and stakeholder groups. This is an excellent opportunity for a licensed professional engineer who thrives in a collaborative, technically challenging environment.

Key Responsibilities

• Serves as the primary Fairfax County representative leading design projects and resolving construction issues.
• Establishes project objectives and performance standards to ensure high-quality engineering solutions.
• Performs complex professional engineering work involving the design, installation, operation, and maintenance of HVAC, Building Automation Systems (BAS), and plumbing systems for new construction, renovations, and capital renewal projects.
• Conducts detailed review and analysis of engineering plans, specifications, and code compliance for HVAC and plumbing systems.
• Acts as a subject matter expert within FMD and for multiple county departments and agencies.
• Prepares and reviews mechanical engineering calculations, reports, construction drawings, specifications, schedules, and project budgets.
• Signs and seals engineering work products in accordance with licensure requirements.
• Ensures all assigned projects are completed on time, meet FMD and industry quality standards, and remain financially and operationally efficient.
• Manages complex projects in occupied commercial or institutional environments.
• Leverages a strong technical background, excellence in design, attention to detail and quality control to perform and review mechanical engineering calculations, reports, construction drawings, specifications, schedules and budgets for commercial building mechanical, plumbing systems, and building automation systems.

Note:

This position is designated as an Essential Employee.
Employment Standards

MINIMUM QUALIFICATIONS:
:(Click on the aforementioned link to learn how Fairfax County interprets equivalencies for "Any combination, experience, and training equivalent to")

Graduation from a four-year college or university accredited by the Accreditation Board of Engineering and Technologies with a bachelor's degree in the appropriate engineering or architectural field; plus, four years of progressively responsible professional experience in the appropriate engineering or architectural field. Possession of a valid Virginia Professional Engineer or Architect license is required.

CERTIFICATES AND LICENSES REQUIRED:

• Possession of a valid Virginia Professional Engineer or Architect license. An individual who possesses a valid Professional Engineer or Architect license in another state will be granted a temporary exemption to this requirement pending the Board for Architects, Professional Engineers, Land Surveyors, Certified Interior Designers & Landscape Architects decision regarding that individual's application for reciprocity.
• Valid driver's license

NECESSARY SPECIAL REQUIREMENTS:
The appointee to this position will be required to complete a criminal background check and driving record check to the satisfaction of the employer.

BONUS ELIGIBILITY:
Positions within this classification that are general merit may be eligible for a one-time hiring incentive bonus for new county employees only. This bonus program requires a signed payback agreement between the department and…