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Senior Mechanical Engineer

Willdan
Home Office - So CA, Remote, CA, US | Home Office - KS, remote, KS, US | Home Office - OR, remote, OR, US | Home Office - Nor CA, remote, CA, US | Home Office - NV, remote, NV, US | Home Office - CO, remote, CO, US, United StatesRemotefull_timeVerifiedPosted 22 Sept 2025
💰 $150,000/yr($135,000/yr$150,000/yr)

About the role

Why Willdan

At Willdan, we seek action-oriented thought leaders, who are driven to solve some of tomorrow’s biggest challenges – especially those in energy and infrastructure. Our employees want to make a difference, and we have the ambition, resources, and technical know-how to do it. Our rapid growth and successes over the past five decades stem from our ability to think big while also paying special attention to project quality and customer service.

Willdan Performance Engineering, a division of Willdan Group Inc., inspires and empowers communities by creating transformational environments. Our clients include school districts; universities; city, county, and state governments; private enterprises; and healthcare facilities. Our guiding principles are as follows:

  • We drive change
  • We think long-term
  • We are courageous experts delivering ambitious solutions
  • Personal growth drives organizational growth; Organizational growth drives personal growth
  • We succeed when we are accountable as a team
  • We cultivate diverse, equitable, and inclusive teams committed to serving our communities

We are currently looking for a senior-level mechanical engineer to join our Design Engineering team. The selected candidate will become a part of a growing organization with year-over-year revenue growth, competitive benefits, and a diverse project workload. The job responsibilities and required skills are described below. 

Essential Duties & Responsibilities

The Senior Mechanical Engineer is responsible for the mechanical design of building infrastructure and energy conservation projects with a focus on hydronic systems, cooling towers, steam boilers, built-up AHUs, building automation control systems, and plumbing systems. The candidate will have a bachelor’s degree in mechanical engineering, be a licensed mechanical professional engineer, and have a minimum of eight to ten years of experience. Some travel is required. The ideal candidate will demonstrate success in the following skills and abilities: 

  • Design mechanical and plumbing building systems with emphasis on complex systems. Create clear accurate construction documents and engineering building specifications. 
  • Review equipment submittals, respond to RFIs and AHJs, perform construction site inspections, and create reports.
  • Be accountable for project design compliance with engineering principles, company standards, and customer contract requirements.
  • Design diverse, simultaneous projects of varying complexities. 
  • Interact with sales, project management, construction, and commissioning to deliver a high-quality outcome. 
  • Have advanced knowledge of national codes and design practices. 
  • Improve productivity, quality, and efficiency by developing new tools, processes, and procedures for design engineering tasks. 
  • Provide professional guidance and training for junior level design engineers. 
  • Identify, recommend, and implement new technologies and systems to improve organizational processes and decision-making. 
  • Communicate with customers to determine needs and applications relative to special installations and adaptations. 
  • Ensure that assigned projects meet all internal and external expectations including, but not limited to, client satisfaction, budget, timing, quality, and safety. 
  • Be proficient in Microsoft Office and heating and cooling load calculation software (Trane Trace 3D).Ability to lead project in design. 
  • Experience designing in Revit and Bluebeam.
  • Experience in mechanical design for VRF and heat pump systems.

Job Requirements / Qualifications

  • Bachelor's degree in Mechanical Engineering. 
  • Mechanical professional engineering license is required. NCEES record a plus. 
  • Experience in design of central plants with complex hydronic systems. 
  • Experience in HVAC system electrification. 
  • Minimum 8-10 years of experience. 
  • Be fully capable of working in design teams to assist in meeting the project goals in a team-focused environment. 
  • Possess excellent verbal and written communication skills as well as interpersonal skills. Demonstrates the ability to communicate ideas and concepts in both written and oral form. 
  • Exposure to high-performance buildings and energy conservation is preferred. 

EEO Non-Discrimination and ADA Reasonable Accommodation Statement
Willdan is an equal opportunity employer. Applicants are considered for all positions without regard to race, religious creed, color, age marital status, sex, sexual orientation, gender identity, gender expression, citize

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Company

Willdan

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