MECHANICAL SENIOR ENGINEER (PE REQUIRED) San Diego

MECHANICAL SENIOR ENGINEER (PE REQUIRED)

Full Time • San Diego
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:   $130,000 – $149,000 annually
    
About the Role:
This role is for a licensed Mechanical Professional Engineer who wants to lead complex HVAC projects, influence technical standards, and operate at a high level within a growing MEP firm.
   
You will not be a production-only engineer. You will be trusted with design authority, QA/QC accountability, and client-facing leadership.
    
Who This Role Is For:
  • You take ownership of your work and project outcomes
  •  You are confident making technical decisions and standing behind them
  •  You have strong experience with U.S.-based commercial HVAC design
  •  You want to grow into higher-level leadership within a structured firm
     
What You’ll Do:
  • Lead HVAC system design for commercial, mixed-use, and institutional projects
  •  Oversee QA/QC across multiple projects to reduce errors and liability
  •  Perform and review heating/cooling load calculations and system sizing
  •  Design and review ductwork, piping, and hydronic systems
  •  Support project managers with technical forecasting and risk planning
  •  Participate in client meetings and represent the firm at a senior level
  •  Contribute to internal standards and technical training
   
What Success Looks Like (First 90 Days):
  • Fully integrated into active project teams
  •  Independently leading mechanical design scopes
  •  Contributing to QA/QC improvements
  •  Demonstrating reliability in deadlines and coordination
   
Non-Negotiable Requirements:
  • Active Professional Engineer (PE) license (U.S.)
  •  8+ years of mechanical (HVAC) design experience
  •  Strong experience with U.S. commercial projects
  •  Proficiency in Revit and mechanical design software
  •  Strong understanding of mechanical codes and California requirements
  •  Experience performing HVAC load calculations and system design
  •  Ability to lead coordination and communicate with clients
   
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
  • Individuals seeking heavily supervised or entry-level roles
Compensation: $130,000.00 - $149,000.00 per year




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