MECHANICAL DESIGNER III

Benefits:

401(k)

401(k) matching

Competitive salary

Dental insurance

Health insurance

Opportunity for advancement

Paid time off

Training & development

Vision insurance

Wellness resources

Location: San Diego, California (On-site)

Compensation: $90,000 – $100,000 annually

About the Role:

This role is for a mid-level Mechanical Designer who can operate independently, lead coordination, and deliver high-quality designs—not someone still needing heavy oversight.

Who This Role Is For:

You have solid experience in U.S.-based commercial HVAC design

You are confident working in Revit and producing complete mechanical design sets

You can manage your workload and meet deadlines without constant supervision

You understand multidisciplinary coordination and can resolve design conflicts

You want to grow into a Senior Engineer or leadership role

What You’ll Do:

Design HVAC systems for commercial, mixed-use, and institutional projects

Perform heating and cooling load calculations and ventilation analysis

Design ductwork, piping, and hydronic systems

Coordinate equipment selection and system layouts

Coordinate with electrical, plumbing, architectural, and structural teams

Lead or participate in coordination meetings and resolve design conflicts

Respond to plan check comments and construction administration (CA) issues

Review work for quality and mentor junior designers as needed

What Success Looks Like (First 90 Days):

Producing complete and accurate mechanical design packages with minimal revisions

Effectively coordinating with other disciplines and resolving issues proactively

Demonstrating reliability in deadlines, communication, and design quality

Contributing to overall team efficiency and project delivery

Non-Negotiable Requirements:

4–6+ years of MEP mechanical (HVAC) design experience

Strong experience with U.S.-based commercial projects

Proficiency in Revit and mechanical design tools

Experience performing HVAC load calculations and system sizing

Working knowledge of mechanical codes and California requirements

Ability to work on-site in San Diego or relocate prior to start

Preferred Qualifications:

Experience with duct and hydronic system design

Familiarity with Title 24 and California energy compliance requirements

Experience leading coordination meetings

Ability to mentor junior designers and review work for quality

Strong communication sk

Compensation & Benefits:

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

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 with less than 4 years of relevant MEP experience

Candidates without U.S.-based project experience

Candidates not proficient in Revit

Candidates without HVAC design experience (load calculations, duct/piping systems)

Individuals seeking heavily supervised or entry-level roles