Benefits:

401(k)

401(k) matching

Competitive salary

Dental insurance

Employee discounts

Flexible schedule

Health insurance

Opportunity for advancement

Paid time off

Relocation bonus

Training & development

Vision insurance

About the Role:

This is an on-site position based in San Diego, California for a licensed Mechanical Professional Engineer who wants to lead the engineering and technical execution of complex commercial HVAC and mechanical system designs, mentor developing engineers and designers, coordinate multidisciplinary projects, and contribute to the continued growth of a rapidly expanding MEP engineering firm.

Compensation & Benefits:

Annual Salary Range: $130,000–$149,000, based on experience, qualifications, and demonstrated technical expertise.

At 120 Degreez, we invest in our team's long-term success—professionally and personally.

401(k) with up to 3% employer match

70% employer-paid medical insurance + 100% dental and vision

$1,500 annual professional development and certification allowance

Paid Company Holidays + 2 weeks of Paid Time Off (PTO) + 1 week Paid Sick Leave

100% employer-paid life insurance

Clear career advancement pathway from Designer through Principal

Collaborative, structured, and growth-focused work environment

Who This Role Is For:

You take ownership of delivering technically excellent engineering solutions

You enjoy mentoring engineers and designers while continuing to expand your technical leadership

You have extensive experience designing U.S.-based commercial mechanical systems

You want to grow into future department leadership and Principal-level opportunities

What You'll Do:

Engineer and oversee HVAC, ventilation, exhaust, hydronic, refrigeration (as applicable), and other mechanical building systems for commercial projects

Prepare and review engineering calculations, equipment selections, specifications, and construction documents utilizing Revit and AutoCAD

Perform HVAC load calculations, energy compliance, equipment sizing, ductwork and piping design, and system analysis

Coordinate mechanical engineering designs with electrical, plumbing, architectural, structural, and civil disciplines

Review project drawings for technical accuracy, constructability, and compliance with company QA/QC standards

Mentor Mechanical Designers, Engineers, and Project Managers while supporting technical development across the department

Participate in client meetings, project coordination meetings, and internal design reviews

Support Project Managers with technical guidance while maintaining project schedules, budgets, and quality expectations

Seal engineering documents in accordance with applicable licensing requirements when appropriate

What Success Looks Like (First 90 Days):

Fully integrated into project teams and company workflows

Leading engineering efforts on multiple commercial projects with minimal supervision

Providing technical mentorship and engineering guidance across project teams

Building strong client and internal relationships while consistently delivering high-quality engineering solutions

Non-Negotiable Requirements:

Active Professional Engineer (PE) license (California preferred)

10+ years of U.S.-based commercial mechanical engineering experience

Strong proficiency in Revit, AutoCAD, Carrier HAP, TRACE 3D Plus, Bluebeam, or other industry-standard mechanical engineering software

Experience preparing engineering calculations, equipment selections, specifications, and construction documents for commercial MEP projects

Thorough understanding of the California Mechanical Code (CMC), California Building Code (CBC), California Energy Code (Title 24), ASHRAE standards, SMACNA standards, and applicable industry codes

Experience performing HVAC load calculations, energy modeling coordination, equipment selection, duct and piping system design, and multidisciplinary coordination

Experience mentoring junior engineers and designers

Excellent communication, organization, and project management skills

Ability to manage multiple projects while meeting deadlines

Work Authorization:

We are not able to provide visa sponsorship for this role. Candidates must be authorized to work in the United States without current or future sponsorship requirements.

Who Should NOT Apply:

Candidates without an active Professional Engineer (PE) license

Candidates without U.S.-based commercial MEP engineering experience

Candidates requiring current or future visa sponsorship

Engineers seeking production-only roles without technical leadership responsibilities

Candidates seeking remote or hybrid positions