Senior Mechanical Engineer - Federal

Jacobs; Arlington (VA); Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health insurance

401(k) plan

Stock purchase

PPTO

Job summary

Jacobs in Arlington, VA is seeking a Mechanical Engineer to join our team, delivering integrated building services design for federal and civilian projects worldwide. The role focuses on conceptual and basis of design development, HVAC philosophy, and equipment planning.

The position requires a PE license, a Bachelor's in Mechanical Engineering, at least 10 years of experience in HVAC/building design, and proficiency with Revit and energy modeling tools.

Qualifications

• Bachelor’s Degree in Mechanical Engineering.
• Professional Engineer (PE) license.
• At least 10 years of relevant HVAC/building design experience, preferably Federal.
• Experience working in a multi-discipline environment.
• Experience with Revit and energy modeling tools (Trace 3D Plus, Carrier HAP).
• Federal security clearance is preferred.

Responsibilities

• Develop design approaches at Conceptual and Basis of Design levels.
• Develop HVAC and plant utility system philosophies and construction specs.
• Perform load calculations and energy modeling.
• Develop BMS control philosophy, sequences of operations.
• Provide construction support through submittals, RFIs, and field visits.
• Travel for client development and project implementation.

Skills

Multi-discipline collaboration

Federal project experience

Education

Bachelor’s Degree in Mechanical Engineering

PE License

Tools

Revit

Trace 3D Plus

Carrier HAP

Job description

At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery, and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

We’re seeking a Mechanical Engineer to join our team in Arlington, VA. As part of our team, you’ll have the chance to work on projects that bring innovative solutions to our clients’ challenges locally and worldwide by providing a range of skills as part of an integrated building services design.

Your role will include

Developing overall Conceptual and Basis of Design level design approaches and documentation. Developing HVAC and plant utility systems philosophies. Developing mechanical / utility equipment and construction specifications. Performing temperature / humidity control / utility load calculations. Developing airflow diagrams, pressurization plans, and classification, as well as ductwork and piping plans. Developing equipment plans, plant utility distribution plans, and system details. Developing building management system (BMS) control philosophy, details, and Sequence of Operations.

Performing construction assistance in the form of submittal reviews, RFI responses, and field visits to verify construction of Mechanical / Utilities scope is executed per the intent of the design and assisting in start-up of systems when required. Traveling as required for client development and project implementation.

Here’s what you’ll need

• Bachelor’s Degree in Mechanical engineering
• PE License
• At least 10years of relevant professional experience for HVAC/Mechanical buildings-related design projects (Federal including DoD, Federal Civilian and/or Defense Contractor project experience preferred).
• Experience working in a multi-discipline environment
• Experience with Revit
• Proficiency in load calculation / energy modeling software such as Trace 3D Plus, Carrier HAP, etc.
• Federal security clearance is preferred

Our health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan. Jacobs has an unlimited U.S. Personalized Paid Time Off (PPTO) policy for full-time salaried/exempt employees, seven paid holidays, and caregiver leave. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.

The base salary range for this position is $140,000.00 to $190,000.00. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. Job posted on October 22, 2026. This position will be open for at least 3 days.

We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support.