MECHANICAL SENIOR ENGINEER (PE REQUIRED)

Job Description Job Description 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 Youll 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 teams long-term successprofessionally 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