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Mechanical Engineer I

Mesa Energy Systems, Inc.
Irvine, CA Full Time
POSTED ON 11/10/2025 CLOSED ON 12/19/2025

What are the responsibilities and job description for the Mechanical Engineer I position at Mesa Energy Systems, Inc.?

About Us

We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation for combining high-quality consulting services with customized energy solutions. Our integrated, single-source solutions include turnkey in-house capabilities with design assistance, as well as engineering applications and automated control systems.

Job Summary

This position will provide engineering and design support for the Mesa Energy Systems Engineering Group.  The Mechanical Engineer I will apply their engineering education to support other Engineers and Team Members. This person will be presented with various projects in the commercial, industrial, government, healthcare and education markets.

Essential Duties & Responsibilities

  • Perform various tasks assigned by Senior Engineers and the Engineering Manager/Director.
  • Generate detailed schematics for HVAC systems based on instructions and pre-established guidelines.
  • Assist Mechanical Engineers by participating in job site surveys to gather as-built technical information.
  • Support senior engineers during audits and surveys as needed.  Record identifying equipment function, tags, location, capacities, photos, etc.  Trace piping and ductwork onto field notes.
  • Convert field surveys into usable formats for plan and project development.  Assist in planning to size, replace, and retrofit new equipment to replace aged or obsolete equipment.  Use AutoCAD to develop plans.
  • Participate in the company’s project improvement process by refining standard design practices, calculating spreadsheet templates, updating and establishing standard procedures and practices, and collecting supporting documentation for various projects to be referenced for future projects.
  • Other duties may include copying/printing/scanning, assembly of equipment submittal packages, assistance in preparing work scope, and other tasks as assigned.

Qualifications

  • Recent grad with a bachelor’s in mechanical engineering
  • 1 years of experience a plus.
  • In the process of obtaining the EIT/FE designation.
  • Develop a working knowledge of Permitting submittal requirements in the Mechanical field.
  • Computer-savvy, willing and able to understand and learn new software programs. Developing proficiency in AutoCAD, MS Office Suite, and other related software applications.
  • Developing proficiency with energy simulation software.  Increasing awareness of energy management concepts.
  • Increasing awareness of HVAC Systems and Components (Hot Water, Chilled Water, Condensing Water, Chillers, Fans, Heat Pumps, etc.)

Equal Opportunity Employer

As a leading provider of mechanical and electrical construction, facilities services, and energy infrastructure, we offer employees a competitive salary and benefits package and we are always looking for individuals with the talent and skills required to contribute to our continued growth and success. Equal Opportunity Employer/Veterans/Disabled

Notice to Prospective Employees

Notice to prospective employees: There have been fraudulent postings and emails regarding job openings. EMCOR Group and its companies list open positions here. Please check our available positions to confirm that a post or email is genuine. EMCOR Group and its companies do not reach out to individuals to help with marketing or other similar services. If an individual is contacted for services outside of EMCOR’s normal application process – it is probably fraudulent.

Geographic Disclosure

Compensation Range: $31.25 - $38.46

 

Benefits: We are committed to providing employees a comprehensive benefits package which includes medical, dental, and vision coverage, along with health savings and flexible spending accounts, life insurance, disability, a 401(k) Savings Plan, College Coach and employee assistance program.

#Mesa

#LI-Mesa 

#LI-HVACjobs 

#LI-Onsite  

Salary : $31 - $38

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