Senior Mechanical Engineer

United Mechanical•San Jose, CA
•$55 - $75

About The Position

The Senior Mechanical Engineer is a hands-on technical lead designer in the Engineering Department, accountable for code-compliant, buildable, and well-coordinated permit and construction documents. The role follows designs through installation, startup, and performance, providing direct feedback from the field. It has project and deliverable accountability but no direct personnel responsibility. The Senior Engineer mentors junior engineers, strengthens QA/QC, and serves as a technical partner to Project Managers and field teams, supporting smooth field execution, clear client communication, and predictable project outcomes.

Requirements

  • 7–10 years of experience in the commercial construction space.
  • A four-year engineering degree or equivalent.
  • Excellent understanding of engineering fundamentals, HVAC system types, equipment, installation standards, and procedures.
  • Ability to assume responsibility, interface, and communicate with others.
  • Fully versed in California and applicable local building codes.
  • Proficiency in Carrier HAP, Trace 700, Energy Pro, or equivalent.
  • Proficiency in AutoCAD.

Nice To Haves

  • Professional Engineer (PE) license preferred, but not required.
  • Revit experience preferred.
  • Prior experience with a mechanical contractor or engineering consultant preferred.

Responsibilities

  • Own mechanical design execution from basis of design through permit and issued-for-construction (IFC) deliverables.
  • Serve as Lead Designer by establishing the basis of design, system selection, equipment sizing, control intent, and document strategy from project kickoff through IFC.
  • Design and troubleshoot air-side systems, including VAV, DOAS, exhaust, pressurization, filtration, and heat recovery, as well as water-side systems, including hydronic plants, pumping, control valves, coils, and heat rejection.
  • Apply California codes and local requirements, including AHJ amendments and applicable energy codes.
  • Own QA/QC of loads and assumptions, duct and pipe sizing, schedules, details, sequences, coordination, and system practicality.
  • Assist Project Managers in presenting and explaining proposals, systems, findings, and options to clients, general contractors, and engineers.
  • Participate in site walks and existing-conditions investigations.
  • Work with Project Managers and engineering staff to prepare or refine project scope.
  • Provide field support during construction, including submittal review, RFIs, and design clarifications.
  • Direct and coordinate project-based engineering activities of in-house and outsourced engineering teams.
  • Guide and mentor junior engineers in fundamentals, codes, design judgment, and document quality.
  • Give Engineering leadership feedback on training needs, performance growth, and opportunities to improve team tools or standards.

Benefits

  • Health care plan including medical, dental, and vision.
  • Retirement plan: 401(k) with 4% company match.
  • Paid time off and paid holidays.
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