Senior Mechanical Designer/Engineer

Who We Are

Mazzetti is a global engineering design and consulting firm with a rich history of delivering forward-thinking solutions primarily for Healthcare and Science and Technology facilities and infrastructure. As an employee-owned benefit corporation, we are committed to bending the climate curve™. Though our story began with a small team of MEP engineers, 60 years later, we’ve grown to 200+ people in 12 locations across the U.S., India, and Africa. We are proud to partner with clients, addressing a spectrum of needs, mindful of their environmental footprint, resiliency, and economic and functional interests.

Our Vision: Creating healthier, enduring environments

Our Mission: Bending the climate curve™

Our Core Values: Earn Trust, Team First, Inspire

We proudly hold the JUST Label, an affirmation of our values-driven culture and commitment to environmental and social impact.

Job Summary

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 Senior Mechanical Designer or Senior Mechanical Engineer to join our Northern California team, based in either San Francisco or Sacramento. This individual will lead the planning, design, and delivery of complex mechanical building systems, partnering closely with multidisciplinary teams and clients to develop innovative solutions for projects throughout Northern California. If you're passionate about designing high-performance building systems, mentoring others, and solving complex engineering challenges, we'd love to hear from you.

Core Responsibilities

Mechanical Design & Technical Leadership

• Lead the design and documentation of HVAC and mechanical building systems for complex healthcare, science & technology, infrastructure, and commercial projects.
• Perform advanced engineering analyses, calculations, and system studies.
• Prepare engineering calculations, equipment selections, system layouts, specifications, and construction documents.
• Review engineering drawings, specifications, and calculations for quality, accuracy, code compliance, and technical excellence.
• Ensure designs comply with applicable building codes, HCAI requirements, industry standards, and Mazzetti quality expectations.
• Apply advanced mechanical engineering expertise to support project delivery and technical excellence.

Project Delivery & Client Support

• Collaborate with project managers, architects, engineers, contractors, vendors, and clients throughout project lifecycles.
• Participate in project planning, scope development, scheduling, and multidisciplinary design coordination.
• Support project pursuits by contributing technical expertise during proposals, interviews, and client presentations.
• Support construction administration activities by responding to RFIs, reviewing submittals, participating in field observations, and resolving technical issues during construction.
• Perform quality control reviews of engineering drawings and specifications at key project milestones.

Team Collaboration & Mentorship

• Work closely with multidisciplinary engineering teams across Mazzetti offices.
• Provide technical guidance and mentorship to junior designers and engineers.
• Contribute to continuous improvement, knowledge sharing, and technical excellence across the Mechanical discipline.

Work Location: This is a hybrid position based in either the San Francisco or Sacramento, CA areas, involving primarily working from home, client site visits throughout Northern California, and occasional presence in our San Francsico or Sacramento offices as needed for project collaboration and team-building activities.

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