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Lead Mechanical Engineer - Buildings

WSP USA

Irvine, CAJob$123–182K/yrSeen todaySeen in employer's feed today

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At a glance

Compensation
$123–182K/yr
Location
Irvine, CA
Work Authorization
Not specified

Olive lists jobs from US employers, including remote roles you can work from the United States.

Requirements

Credentials this posting asks for.

PE License Or California Reciprocity, requiredBachelor's degree, required

Job overview

WSP is seeking a Lead Mechanical Engineer for its Irvine office to lead and support mechanical building-systems design for complex Property & Buildings projects. The role spans HVAC and related systems from early design through construction administration, with technical oversight, multidisciplinary coordination, client engagement, and mentorship of junior staff. Healthcare experience is preferred, particularly in acute-care and other technically complex environments.

Skills & qualifications

RequiredNice to have

Skills

Building Systems Design, requiredHVAC Design, requiredAir Distribution, requiredHydronic Systems, requiredCentral Plant Systems, requiredPlumbing Systems, requiredBuilding Controls, requiredEquipment Selection, requiredLoad Calculations, requiredBuilding Energy Performance, requiredMechanical Design Leadership, requiredMultidisciplinary Coordination, requiredBuilding Codes, requiredMechanical Codes, requiredEnergy Codes, requiredIndustry Standards, requiredRevit, requiredAutoCAD, requiredMechanical Analysis Software, requiredLoad Calculation Software, requiredWritten Communication, requiredVerbal Communication, requiredInterpersonal Communication, requiredMentoring, requiredTechnical Direction, requiredQA/QC, requiredPriority Management, requiredHealthcare Design, nice to haveFGI Standards, nice to haveASHRAE Standards, nice to haveNFPA Standards, nice to haveHealthcare Renovations, nice to haveProject Management, nice to haveClient Relationship Management, nice to haveLEED, nice to haveSustainability Credentials, nice to have

Qualifications

Bachelor's in Mechanical Engineering or Related, required7+ Years Relevant Experience, requiredPE License or California Reciprocity, requiredMaster's in Mechanical Engineering or Related, nice to have

Benefits

Medical Insurance
Dental Insurance
Vision Insurance
401(k) Match
Paid Time Off
Parental Leave

Full job description

This Opportunity

Be involved in projects with our Property & Buildings Team and be a part of a growing organization that meets our clients' objectives and solves their challenges.

WSP is currently initiating a search for a Lead Mechanical Engineer for our Irvine, CA office. The ideal candidate will bring strong building systems design experience, technical leadership capabilities, and a preference for experience supporting healthcare facilities and other complex building environments.

In this role, you will lead and support the design of HVAC and mechanical building systems, including air distribution, central utility plants, hydronic systems, plumbing, controls, and energy-efficient solutions. You will work closely with architects, engineers, contractors, owners, and other stakeholders throughout design and construction while providing technical guidance and mentorship to junior staff.

Your Impact

  • Serve as a lead mechanical engineer for complex Property & Buildings projects, with an emphasis on healthcare and other technically demanding facilities.

  • Lead the design of HVAC systems including air distribution, hydronic systems, central plants, automated temperature controls, and energy-efficient building systems.

  • Develop and review mechanical drawings, specifications, calculations, equipment selections, schedules, and design documentation.

  • Integrate complex mechanical engineering requirements into multidisciplinary facility designs.

  • Coordinate mechanical design activities with architectural, structural, electrical, plumbing, fire protection, and other disciplines.

  • Provide technical oversight and QA/QC reviews of mechanical designs and deliverables.

  • Participate in projects from concept and schematic design through design development, construction documents, and construction administration.

  • Survey and evaluate existing building conditions and develop recommendations for renovations, upgrades, and new systems.

  • Attend client and project meetings and clearly communicate mechanical engineering concepts, recommendations, and design decisions.

  • Build and maintain strong relationships with clients, architects, contractors, vendors, and manufacturers.

  • Provide technical leadership, mentorship, and guidance to junior engineers and designers.

  • Support project managers with scopes, schedules, budgets, and coordination of mechanical deliverables.

  • Assist with proposals, pursuits, presentations, and other business development activities.

  • Remain current with mechanical engineering practices, building codes, sustainability initiatives, and emerging technologies.

  • Exercise responsible and ethical decision-making regarding company funds, resources, and conduct, and adhere to WSP's Code of Conduct and related policies and procedures.

  • Perform additional responsibilities as required by business needs.

Who You Are

Required Qualifications

  • Bachelor's degree in Mechanical Engineering, Architectural Engineering, or a closely related discipline.

  • 7+ years of relevant post-education experience in mechanical engineering and building systems design.

  • Professional Engineer (PE) license required, or ability to obtain California PE registration through reciprocity as appropriate.

  • Demonstrated experience designing HVAC and mechanical systems for commercial, institutional, healthcare, laboratory, higher education, or other complex building environments.

  • Strong knowledge of air distribution, hydronic systems, central plant systems, plumbing, controls, equipment selection, load calculations, and building energy performance.

  • Experience leading mechanical design efforts and coordinating work across multidisciplinary project teams.

  • Working knowledge of relevant building, mechanical, and energy codes and industry standards.

  • Proficiency with Revit and AutoCAD and familiarity with mechanical engineering analysis and load calculation software.

  • Strong written, verbal, and interpersonal communication skills with the ability to communicate effectively with clients, project teams, and non-engineering stakeholders.

  • Demonstrated ability to mentor junior staff and provide technical direction with strong attention to QA/QC.

  • Ability to manage priorities and deliver high-quality work across multiple concurrent projects.

Preferred Qualifications

  • Healthcare project experience, particularly acute-care hospitals, medical office buildings, ambulatory care, laboratories, or other technically complex healthcare environments.

  • Knowledge of healthcare design requirements and standards, including FGI, ASHRAE, and NFPA.

  • Experience with renovation projects in active or occupied healthcare environments.

  • Experience managing small to mid-size projects or serving as the mechanical discipline lead on larger multidisciplinary projects.

  • Experience developing and maintaining relationships with healthcare clients, architects, and contractors.

  • LEED accreditation or other sustainability credentials.

  • Master's degree in Mechanical Engineering or a related discipline.

WSP provides a comprehensive suite of benefits focused on a providing health and financial stability throughout the employee’s career. These benefits include coverage related to medical, dental, vision, disability, and life; retirement savings; paid sick leave; paid vacation (or other personal time); paid parental leave; and paid time off for purposes of bereavement, voting, and/or attendance at naturalization proceedings.

Compensation:

Expected Salary (all locations): $122,700 - $182,200

WSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant’s education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location. WSP USA reserves the right to ultimately pay more or less than the posted range and offer additional benefits and other compensation, depending on circumstances not related to an applicant’s sex or other status protected by local, state, and/or federal law.

About WSP

WSP USA is the U.S. operating company of WSP, one of the world's leading engineering and professional services firms. Dedicated to serving local communities, we are engineers, planners, technical experts, strategic advisors and construction management professionals. WSP USA designs lasting solutions in the buildings, transportation, energy, water and environment markets. With more than 15,000 employees in over 300 offices across the U.S., we partner with our clients to help communities prosper.

www.wsp.com

WSP provides a flexible and agile workplace model while meeting client needs. Employees are also afforded a comprehensive suite of benefits including medical, dental, vision, disability, life, and retirement savings focused on providing health and financial stability throughout the employee’s career.

At WSP, we want to give our employees the challenges they seek to grow their careers and knowledge base. Your daily contributions to your team will be essential in meeting client objectives, goals and challenges. Are you ready to get started?

WSP USA (and all of its U.S. companies) is an Equal Opportunity Employer Race/Age/Color/Religion/Sex/Sexual Orientation/Gender Identity/National Origin/Disability or Protected Veteran Status.

The selected candidate must be authorized to work in the United States.

NOTICE TO THIRD PARTY AGENCIES:

WSP does not accept unsolicited resumes from recruiters, employment agencies, or other staffing services. Unsolicited resumes include any resume or hiring document sent to WSP in the absence of a signed Service Agreement where WSP has expressly requested recruitment/staffing services specific to the position at hand. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation – no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.

How this job compares

Set against the 7,319 open Mechanical Engineer jobs on Olive Jobs, counted November 12, 2026.

Pay
  • This posting$123–182K/yr
  • California median$126–180K/yr960 salary ranges
  • US median$104–160K/yr4,410 salary ranges

This range's midpoint, $152K, is close to the California median midpoint ($154K) — in the middle half of Mechanical Engineer salary ranges in California.

Openings
Olive Jobs lists 1,209 open Mechanical Engineer jobs in California and 7,319 across the US. 3% of them nationwide are listed as remote or flexible.
Hiring the most in California
Experience
This posting asks for at least 7 years of experience; Mechanical Engineer postings that state a minimum ask for 5 years at the median (6,170 postings).
Education
This posting asks for a bachelor's degree; 5,016 of the 7,319 open Mechanical Engineer jobs (69%) ask for a bachelor's degree or higher.

Counted across the open, public US postings on Olive Jobs on November 12, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.

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