Mechanical Engineer

Summary

A well-established mechanical and plumbing contractor is seeking a Mechanical Design Engineer to support the design and engineering of commercial HVAC and mechanical systems throughout Southern California. This role works closely with project management, estimating, BIM, and field teams to develop practical, constructible solutions from preconstruction through installation.

This is a strong fit for someone with HVAC or building mechanical systems design experience who wants to work in a design-build environment and stay closely connected to the construction side of projects.

Key Responsibilities

Design and develop HVAC and mechanical systems for commercial construction projects

Perform heating and cooling load calculations, equipment sizing, and system selections

Develop mechanical plans, specifications, schedules, and supporting calculations

Support design-build and design-assist projects from early concept through construction

Coordinate mechanical systems with plumbing, electrical, architectural, and structural disciplines

Work closely with BIM/VDC teams on system layouts, coordination, and constructability

Review drawings, submittals, equipment selections, and technical documentation

Assist with value engineering and alternative system evaluations

Coordinate with project managers, estimators, field teams, clients, and design partners

Provide engineering support throughout construction, commissioning, and project closeout

Requirements

3-6+ years of mechanical engineering or HVAC design experience

Experience designing HVAC systems for commercial, healthcare, institutional, industrial, or similar building projects

Strong understanding of HVAC equipment, ductwork, hydronic systems, and building mechanical systems

Experience with load calculations, equipment selection, and mechanical system design

Experience working with AutoCAD and/or Revit

Familiarity with applicable mechanical codes and energy requirements

Design-build or mechanical contractor experience strongly preferred

Ability to coordinate effectively with BIM, project management, and field construction teams

Bachelor's degree in Mechanical Engineering or related field preferred

EIT or PE license is a plus

Compensation & Benefits

Competitive base salary

Medical, dental, and vision insurance

401(k) with company match

Paid holidays and PTO

Employee-owned company environment

Stable backlog of major Southern California projects

Long-term growth within a well-established mechanical contractor

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