Senior Mechanical Engineer - Buildings

Senior Mechanical Engineer – Property & Buildings

Irvine, CA

WSP is seeking a Senior Mechanical Engineer to join our Property & Buildings team in Irvine, CA. The role is ideal for a motivated engineer who brings experience across sectors, including commercial, higher education, multi‑family residential, and civic projects, and who wants to grow within a collaborative, design‑focused environment.

• Perform mechanical engineering design and technical delivery across a diverse portfolio including commercial, higher education, multi‑family residential, and civic projects
• Support design of HVAC, air distribution, hydronic, and building systems
• Participate in the full project lifecycle, from concept development through construction and close‑out
• Analyze and interpret data from site conditions, drawings, and technical documents to support engineering solutions
• Prepare and contribute to technical reports, specifications, and design documentation
• Ensure designs comply with applicable codes, standards, and sector‑specific requirements, including healthcare environments
• Collaborate with multi‑disciplinary teams to deliver integrated project solutions
• Support client interactions and project meetings, building strong working relationships
• Mentor junior staff and contribute to team development

• Bachelor’s Degree in Mechanical Engineering or Architectural Engineering
• 5+ years of relevant experience in mechanical design for building systems
• Experience supporting projects across commercial, higher education, and multi‑family residential and civic projects
• Strong understanding of HVAC systems and mechanical design principles
• Experience supporting projects from design through construction
• Proficiency with Revit, AutoCAD, and related engineering tools
• Strong communication and collaboration skills

• Professional Engineer (PE) license or on‑track to obtain
• Experience working on complex commercial, higher education, and multi‑family residential and civic projects
• Familiarity with California codes and local jurisdiction requirements
• Experience working with multi‑disciplinary engineering teams
• LEED AP or sustainability credentials

WSP provides a comprehensive suite of benefits focused on health and financial stability. Benefits include medical, dental, vision, disability and life coverage; retirement savings; paid sick leave; paid vacation and personal time; paid parental leave; and paid bereavement, voting, and naturalization leave.

Expected Salary: $107,500 - $156,600. The range is based on location, experience, and other factors.

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.