Mechanical Designer​/Engineer

Mechanical Designer or Mechanical Engineer

Mazzetti's Mechanical, Electrical, Plumbing (MEP) Consulting Engineering Practice is dedicated to designing high performance, resilience, and sustainable solutions for the built environment, with a keen focus on Healthcare and Infrastructure projects. Our team of experts combines technical excellence with a collaborative, client-focused approach to deliver exceptional outcomes.

We are seeking an experienced Mechanical Designer or Mechanical Engineer to join our growing Southern California team, based in the Orange County / Los Angeles, CA area. This role will contribute to the design and delivery of mechanical building systems for projects throughout Southern California while collaborating with multidisciplinary teams supporting projects across the western United States. If you're passionate about designing high-performance building systems and enjoy collaborating on meaningful, complex projects, we'd love to hear from you.

Core Responsibilities

• Design HVAC and mechanical building systems for commercial, institutional, healthcare, and other complex facilities.
• Perform engineering analyses, calculations, equipment selections, and system studies.
• Prepare construction documents, including plans, specifications, schedules, and technical documentation.
• Coordinate mechanical systems with architectural, structural, electrical, plumbing, and specialty disciplines.
• Review engineering drawings and specifications for quality, constructability, code compliance, and technical accuracy.
• Apply applicable building codes, industry standards, and Mazzetti quality expectations throughout project delivery.

Project Delivery

• Collaborate with project managers, architects, engineers, contractors, vendors, and clients throughout all phases of project delivery.
• Participate in project planning, multidisciplinary coordination meetings, and design reviews.
• Support construction administration by responding to RFIs, reviewing submittals, participating in site visits, and resolving technical issues during construction.
• Contribute to successful project delivery by supporting schedule, quality, and client expectations.

Team Collaboration

• Work closely with multidisciplinary engineering teams across Mazzetti offices.
• Share technical knowledge and collaborate with engineers and designers throughout the organization.
• Participate in quality control reviews and continuous improvement initiatives.
• Mentor junior staff as experience allows.

Work Location:

This is a hybrid position based in the Orange County / Los Angeles, CA area, including primarily working from home, client site visits throughout Southern California, and occasional presence in one of our Southern California offices as needed for project collaboration and team-building activities.

Travel Requirements:
Approximately 10–15% travel, primarily within Southern California based on project assignments.

Requirements

Education & Experience

• Bachelor's degree in Mechanical Engineering or a related engineering discipline, or equivalent mechanical design experience.
• 6+ years of mechanical engineering or mechanical design experience within the AEC consulting industry.
• Demonstrated experience designing HVAC and mechanical building systems for commercial, institutional, healthcare, or other complex facilities.
• Experience coordinating with multidisciplinary engineering teams.
• Experience preparing construction documents and supporting projects through construction.
• Healthcare experience, particularly hospitals and medical office buildings (MOBs), is preferred but not required.

Technical Expertise

• Strong knowledge of HVAC and mechanical building systems.
• Thorough understanding of the California Building Code (CBC), California Mechanical Code (CMC), applicable energy codes, and industry standards.
• Proficiency with Revit, AutoCAD, Bluebeam, and mechanical load calculation software.
• Experience preparing engineering calculations, equipment selections, specifications, and construction documentation.
• Familiarity with sustainable, resilient, and high-performance building design principles.
• Strong written, verbal, and presentation skills.

Licenses & Certifications

• Professional Engineer…