Mechanical Engineer Temporary Jobs (NOW HIRING)

This role focuses on the mechanical design of large commercial buildings, with a strong emphasis on data centers. The mechanical engineer performs load calculations, selects HVAC equipment, and develops HVAC and plumbing designs for new construction and renovation projects. The position also involves project management responsibilities, coordination with mechanical/electrical subcontractors, and regular use of Revit and AutoCAD to produce high-quality design documents.

• Design HVAC systems for large commercial buildings, with a primary focus on data centers.
• Perform detailed load calculations to size and select appropriate HVAC equipment.
• Develop plumbing system designs for new construction and renovation projects.
• Select HVAC equipment based on project requirements, energy efficiency, and performance criteria.
• Prepare and review mechanical design documents using Revit and AutoCAD.
• Coordinate and work closely with mechanical and electrical subcontractors (ME subs) to ensure integrated design solutions.
• Manage mechanical engineering projects, including planning, scheduling, and tracking progress.
• Interact directly with clients to discuss HVAC and mechanical design concepts, requirements, and proposed solutions.
• Support field and site visits at data center locations across the United States to verify existing conditions and support design implementation.
• Collaborate with internal engineering teams to ensure designs meet applicable codes, standards, and client expectations.
• Provide mentorship and technical guidance to less experienced engineers as needed.
• Participate in design reviews and quality checks to ensure accuracy and constructability of mechanical systems.

• B.S. in Mechanical Engineering with 6–10 years of applicable experience, or 10+ years of mechanical engineering project management experience.
• At least 5+ years of HVAC design experience.
• Strong background in HVAC system design for commercial buildings.
• Experience in plumbing system design for building projects.
• Proficiency in Revit for mechanical design and documentation.
• Working knowledge of AutoCAD for mechanical drafting and coordination.
• Demonstrated experience in mechanical design for large commercial or data center projects.
• Ability to perform load calculations and HVAC equipment selection.
• Project management experience in mechanical engineering projects.
• Ability to interact professionally with clients to discuss HVAC and mechanical design.
• Strong communication and coordination skills for working with mechanical and electrical subcontractors.
• Professional Engineer (PE) orientation or experience working in environments that value professional licensure.

• Experience with both new construction and renovation projects for commercial buildings.
• Experience working on data center projects on a regional or national scale.
• Professional Engineer (PE) license or progress toward licensure is highly valued.
• Experience in an architecture/engineering (A/E) firm environment.
• Interest in ongoing professional development, training, and certifications.
• Ability to mentor and support junior engineers in developing their technical skills.
• Flexibility to travel for site visits across the United States as project needs require.

The role is primarily office-based, working mostly in a professional engineering office environment. The position involves regular use of Revit and AutoCAD on modern computer systems to produce mechanical and plumbing designs. The engineer will also conduct site visits on a national level to data centers across the United States to observe existing conditions and support project implementation. The organization offers flexible schedules and supports a culture of mentoring, professional growth, and training, including financial support for relevant certifications. The work setting reflects a top-tier architecture/engineering firm with a collaborative, project-driven atmosphere focused on delivering high-quality mechanical designs for complex commercial facilities.

This is a Permanent position based out of Tysons, VA.

The pay range for this position is $120000.00 - $150000.00/yr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your jobclassification and length of employment. Benefits are subject to change and may besubject to specific elections, plan, or program terms. If eligible, the benefitsavailable for this temporary role may include the following:• Medical, dental & vision• Critical Illness, Accident, and Hospital• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available• Life Insurance (Voluntary Life & AD&D for the employee and dependents)• Short and long-term disability• Health Spending Account (HSA)• Transportation benefits• Employee Assistance Program• Time Off/Leave (PTO, Vacation or Sick Leave)

This is a fully onsite position in Tysons,VA.

This position is anticipated to close on Sep 18, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 20,000 consultants and 5,000 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications withoutregard to race, sex, age, color, religion, national origin, veteran status, disability,sexual orientation, gender identity, genetic information or any characteristic protectedby law.

If you would like to request a reasonable accommodation, such as the modification oradjustment of the job application process or interviewing process due to a disability,please email actalentaccommodation@actalentservices.com for other accommodation options.

San Francisco Fair Chance Ordinance:Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in thecity and county of San Francisco, we will consider for employment qualified applicantswith arrest and conviction records.

Massachusetts Lie Detector:It is unlawful in Massachusetts to require or administer a lie detector test as acondition of employment or continued employment. An employer who violates this lawshall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI):We may use Artificial Intelligence (AI) to support parts of our hiring process,including sourcing, screening, and evaluating candidates. AI helps assess applicationsand qualifications, but final decisions are made by our hiring team. By applying, youacknowledge and agree that your application may be reviewed using AI tools.