Application Engineer I

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

• Read and identify mechanical equipment on floor plans.

• The ability to identify mechanical equipment on drawings the following: Chillers, Boilers, Pumps, AHU’s, FCU’s, VAV’s, and EF’s.

• Understand basic electrical control circuits including 24VAC power and controller input/outputs.

• Be proficient and utilize Visio and or AutoCAD.

• Understand simple controls networking principles.

• Display knowledge of controls hardware

• Create P&ID’s based on contract drawings P&ID’s

• Develop controls submittals with assistance from senior level application engineers.

• Understand simple installation methods.

• Ability to implementation systems graphics per project scope

• Create guidelines, standards and templates for typical projects.

• Basic knowledge of the National Electric Code (NEC) requirements for control system installations.

Qualifications

• Bachelor’s degree in engineering (preferably Electrical or Mechanical) or equivalent field experience.

• 2+ years of relevant experience, with at least 2 years in applications engineering preferred.

• Engineering skills required include knowledge of electronics, mechanics, hydraulics, pneumatics, and computer programming.

• Working knowledge of at least one HVAC controls systems (preferably Delta, JCI or Andover)

• Excellent verbal and written communication skills.

• Experience with control system architecture design, programing, or maintenance desired.

• EIT or desire to obtain a PE license a plus.

#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

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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: $35 - $40 per hour

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

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Job Locations US-CA-Chino

ID 2026-51065

Company Mesa Energy Systems, Inc.

Category Operations Services

Position Type Full-Time

Location Type Onsite

Posted Date 3 weeks ago (7/7/2026 3:00 PM)