Mechanical Design Engineer (HVAC / Plumbing)

Location: Union City, CA
Salary: $85,000–$100,000 annually (DOE)
Job Type: Full-Time

Position Overview

We are seeking a motivated Mechanical Design Engineer to join an established engineering team in Union City, CA. This position is ideal for someone with a Mechanical Engineering degree and 1–4+ years of experience who is looking to further develop their technical skills and gain exposure to HVAC, plumbing, and mechanical building systems.

The selected candidate will work alongside experienced engineers and project teams to develop practical, efficient mechanical designs while gaining experience across multiple phases of the design and construction process.

Key Responsibilities

• Develop mechanical drawings, layouts, calculations, and technical documentation.

• Assist with HVAC and plumbing system design, equipment selection, and sizing.

• Perform heating and cooling load calculations and evaluate system requirements.

• Prepare and update design drawings using AutoCAD, Revit, or similar software.

• Coordinate mechanical designs with architectural, structural, and other engineering disciplines.

• Review plans, project specifications, and applicable building codes.

• Support design revisions, technical problem-solving, and construction documentation.

• Collaborate with engineers, project managers, and other team members to meet project schedules and requirements.

Qualifications

Required:

• Bachelor's degree in Mechanical Engineering.

• 1–4+ years of relevant mechanical engineering or design experience.

• Strong understanding of mechanical engineering principles and systems.

• Ability to read and interpret technical drawings, specifications, and engineering documents.

• Strong analytical, organizational, and communication skills.

• Detail-oriented with the ability to manage multiple projects and priorities.

Preferred:

• HVAC and/or plumbing design experience.

• Experience with AutoCAD, Revit, or similar design software.

• Familiarity with commercial building systems, mechanical equipment, ductwork, and piping.

• Knowledge of mechanical codes, load calculations, and equipment sizing.

• EIT certification or plans to pursue professional engineering licensure.

Compensation & Benefits

• Base Salary: $85,000–$100,000, depending on experience.

• Medical, dental, and vision insurance.

• 401(k) retirement plan with employer matching.

• Paid time off and paid holidays.

• Life and disability insurance.

• Professional development and continuing education opportunities.

• Career advancement and opportunities for increased design responsibility.

• Collaborative, team-oriented work environment.

Apply Today

If you're a Mechanical Engineer looking to expand your design experience and grow your career, we'd like to connect. HVAC and plumbing experience is a plus, but candidates with strong mechanical engineering fundamentals and a willingness to learn are encouraged to apply.

All inquiries will be handled confidentially.

Related Titles: Mechanical Designer, Mechanical Design Engineer, HVAC Designer, HVAC Design Engineer, Plumbing Designer, Plumbing Design Engineer, MEP Designer, MEP Engineer, Junior Mechanical Engineer, Mechanical Project Engineer, Mechanical EIT, HVAC Systems Designer, Building Systems Engineer, Mechanical Engineering Designer, Mechanical Design Specialist, Building Services Engineer.

Interested? Contact Anna Boyd directly at

anna.boyd@gogpac.com

All qualified applicants will receive consideration without regard to race, age, color, sex (including pregnancy), religion, national origin, disability, sexual orientation, gender identity, marital status, military status, genetic information, or any other status protected by applicable laws or regulations.

GPAC (Growing People and Companies) is an award-winning search firm specializing in placing quality professionals within multiple industries across the United States since 1990. We are extremely competitive, client-focused and realize that our value is in our ability to deliver the right solutions at the right time.