Senior Mechanical Engineer: Lead Designer & Field-Ready

United Mechanical; San Francisco (CA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Disability insurance

Life insurance

Flexible Time Off

401(k) with company match

Job summary

United Mechanical is seeking a Senior Mechanical Engineer to lead the mechanical design for commercial projects in California. You will own design from basis-of-design through IFC, troubleshoot air-side and water-side systems, and ensure code compliance with AHJ requirements.

You will mentor junior engineers, coordinate with project teams, and provide field support during construction to ensure successful startup and operation.

Qualifications

• 7–10 years’ experience in the commercial construction space.
• 4-year engineering degree or equivalent.
• Professional Engineer (PE) license preferred, but not required.
• Excellent understanding of engineering fundamentals, HVAC system types, equipment, installation standards, and procedures.
• The ability to assume responsibility, interface, and communicate with others is essential.
• Must be fully versed in California and applicable local building codes.
• Proficient in Carrier HAP, Trace 700, Energy Pro, or equivalent; AutoCAD and Revit experience.

Responsibilities

• Technical ownership of mechanical design from basis-of-design through IFC deliverables.
• Lead Designer: establish basis of design, system sizing, and document strategy from kickoff through IFC.
• Design and troubleshoot air-side and water-side systems (VAV, DOAS, hydronic plants, pumps, valves, coils).
• Apply California codes and local AHJ amendments and energy code.
• Own QA/QC: loads/assumptions, duct/pipe sizing, schedules, details, and coordination checks.
• Assist Project Managers in presenting proposals and options to clients, general contractors, and engineers.
• Provide field support during construction: submittals, RFIs, and design clarifications.
• Direct and coordinate project-based engineering activities of both in-house and outsourced teams.

Skills

Team leadership

Field coordination

HVAC systems knowledge

Mechanical design

Education

4-year engineering degree

PE license (preferred)

Tools

Carrier HAP

Trace 700

Energy Pro

AutoCAD

Revit

Job description

United Mechanical is seeking a Senior Mechanical Engineer to lead the mechanical design for commercial projects in California. You will own design from basis-of-design through IFC, troubleshoot air-side and water-side systems, and ensure code compliance with AHJ requirements.

You will mentor junior engineers, coordinate with project teams, and provide field support during construction to ensure successful startup and operation.