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Mechanical Designer III

Job in San Diego, San Diego County, California, 92189, USA
Listing for: AMIRI BUILDING ENGINEERING INC dba 120 DEGREEZ
Full Time position
Listed on 2026-07-30
Job specializations:
  • Engineering
    Mechanical Engineer, Building Services Engineer
Salary/Wage Range or Industry Benchmark: 90000 - 100000 USD Yearly USD 90000.00 100000.00 YEAR
Job Description & How to Apply Below

Benefits:

  • 401(k)
  • 401(k) matching
  • Competitive salary
  • Dental insurance
  • Health insurance
  • Opportunity for advancement
  • Paid time off
  • Training & development
  • Vision insurance
  • Wellness resources
  • 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
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 skills
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.

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