Mechanical Engineer III

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.

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.

• Ability to independently conduct job site surveys with a complete understanding of the project's intent and be able to analyze and propose design solutions and installation sequencing.

• Ability to independently conduct 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. Select the size of replacement/retrofit/new equipment to replace aged or obsolete equipment. Use AutoCAD to develop plans.

• Developing ability to independently recommend engineered mechanical solutions and designs, coordinate and quality check outsourced engineering resources, determine and process utility incentives, prepare permit documents for mechanical projects, perform load and energy calculations, and other engineering duties.

• 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 references for future projects.

Qualifications

• Bachelor’s degree in mechanical engineering.

• 5+ years of engineering and design experience.

• PE license, or in the process of obtaining PE licensure.

• Be proficient with Permitting submittal requirements in the Mechanical field.

• Computer savvy, with advanced knowledge of computers and handling software. Proficient with AutoCAD, MS Office Suite, and other related software applications.

• Demonstrated proficiency with energy simulation software. Developed understanding of energy management concepts.

• Developed understanding of HVAC Systems and Components (Hot Water, Chilled Water, Condensing Water, Chillers, Fans, Heat Pumps, etc.). Increasing awareness of control sequences, optimal start/stop, PID loop control, and programming.

#Mesa #LI-Mesa #LI-HVACjobs #LI-Onsite

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

Affirmative Action Policy

Please review ourAffirmative Action Policy ( .

Notice to Prospective Employees

Notice to prospective employees: There have been fraudulent postings and emails regarding job openings. EMCOR Group and its companieslist 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: $115,000 - $130,000 per year

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

Email a Friend Email a Friend

Software Powered by ICIMS (

Job Locations US-CA-West Sacramento

ID 2026-50967

Company Mesa Energy Systems, Inc.

Category Engineering

Position Type Full-Time

Location Type Onsite

Posted Date 2 months ago (7/7/2026 12:36 PM)