Senior Mechanical Engineer

About the role

A hands-on technical lead responsible for developing code-compliant, buildable, and well-coordinated mechanical designs for commercial construction projects. This position owns design execution from basis of design through permit and issued-for-construction (IFC) documents, working closely with Project Managers, field personnel, clients, contractors, and engineering teams. The role also provides technical mentorship to junior engineers and helps maintain strong QA/QC standards across projects.

Responsibilities

• Lead mechanical design execution from basis of design through permit and IFC deliverables.
• Establish system selection, equipment sizing, control intent, and documentation strategies.
• Design and troubleshoot air-side systems, including VAV, DOAS, exhaust, pressurization, filtration, and heat recovery systems.
• Design and troubleshoot water-side systems, including hydronic plants, pumping systems, control valves, coils, and heat rejection systems.
• Apply California building codes, energy codes, AHJ requirements, and applicable local amendments.
• Review loads, design assumptions, duct and pipe sizing, equipment schedules, details, sequences, and system coordination.
• Perform thorough constructability and functionality reviews to ensure designs can be successfully installed and operated.
• Maintain consistent engineering and documentation standards.
• Support Project Managers with client, contractor, and engineer presentations and technical discussions.
• Participate in site walks and existing-condition investigations.
• Assist with developing and refining project scopes.
• Provide construction-phase engineering support, including submittal reviews, RFIs, and design clarifications.
• Coordinate with project teams to ensure designs integrate effectively with field installation.
• Direct and coordinate project-based engineering activities involving internal and external engineering teams.
• Mentor junior engineers in engineering fundamentals, applicable codes, design judgment, and documentation quality.
• Provide engineering leadership with feedback regarding training needs, team development, processes, and technical standards.

Requirements

• 7-10 years of experience in commercial construction.
• Four-year engineering degree or equivalent experience.
• Professional Engineer (PE) license preferred but not required.
• Strong knowledge of HVAC systems, equipment, installation standards, and engineering fundamentals.
• Strong communication and interpersonal skills with the ability to work effectively with clients, contractors, engineers, and project teams.
• Strong knowledge of California and applicable local building codes.
• Proficiency with Carrier HAP, TRACE 700, EnergyPro, or equivalent HVAC/load calculation software.
• Proficiency with AutoCAD.
• Revit experience preferred.
• Previous experience with a mechanical contractor or engineering consulting firm preferred.

Benefits

• Medical, dental, and vision insurance.
• Disability insurance.
• Company-paid life insurance.
• Flexible Time Off.
• Paid holidays.
• 401(k) with 100% company match up to 4% of employee contributions.
• Career growth and professional development opportunities.