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Energy Systems Engineer Jobs in California (NOW HIRING)

EMCOR Group Inc

Mesa Energy Systems, Inc.

Santa Ana, CA · On-site

$31.32 - $56.95/hr

... engineering applications and automated control systems. * Maintain daily operations of boilers ... energy infrastructure, we offer employees a competitive salary and benefits package and we are ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Fresno, CA · On-site

$90K - $115K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... Energy Systems and our client. This role is responsible for daily operations and maintenance, and ... Maintains liaison with architects, engineers and contractors/ subcontractors engaged in plant ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

West Sacramento, CA

$90K - $120K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... engineering applications and automated control systems. Responsible for preparing and/or ... energy infrastructure, we offer employees a competitive salary and benefits package and we are ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Thousand Oaks, CA · On-site

$31 - $35/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... engineering applications and automated control systems. This person will support the pre ... energy infrastructure, we offer employees a competitive salary and benefits package and we are ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Chino, CA · On-site

$80K - $105K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... Energy Systems and our client for small Automation projects and assisting Project Managers for ... This position will include oversight and application of Automation Programming and Engineering ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Bakersfield, CA · On-site

$38 - $43/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... as well as engineering applications and automated control systems. The Building Automation ... energy infrastructure, we offer employees a competitive salary and benefits package and we are ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Santee, CA

$38 - $45/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... as engineering applications and automated control systems. The Automation Technician II will ... energy infrastructure, we offer employees a competitive salary and benefits package and we are ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Fresno, CA · On-site

$45 - $65/hr

Electrical and/or Mechanical Engineering studies preferred. * Knowledge of electrical and ... systems in industrial steam and power plant operations and familiarity with electrical and ...

Peak Energy

Staff Functional Systems Engineer

Burlingame, CA · On-site

  • Medical

  • Dental

  • Vision

  • Retirement

Peak Energy Job Title: Staff Functional Systems Engineer Location: Burlingame, CA Department: Energy Storage System (ESS) Engineering Reports To: Senior Systems Engineer Position Type: Full-time ...

Peak Energy

Staff Functional Systems Engineer

Burlingame, CA · On-site

  • Medical

  • Dental

  • Vision

  • Retirement

Peak Energy Job Title: Staff Functional Systems Engineer Location: Burlingame, CA Department: Energy Storage System (ESS) Engineering Reports To: Senior Systems Engineer Position Type: Full-time ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

San Leandro, CA · On-site

$80K - $105K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... energy solutions. Our integrated, single-source solutions include turnkey in-house capabilities ... as engineering applications and automated control systems. This position involves planning ...

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Showing results 41-60

All JobsEnergy Systems Engineer JobsEnergy Systems Engineer Jobs in California

Energy Systems Engineer information

See California salary details

$52.8K

$125.5K

$164.8K

How much do energy systems engineer jobs pay per year?

As of Aug 13, 2026, the average yearly pay for energy systems engineer in California is $125,549.00, according to ZipRecruiter salary data. Most workers in this role earn between $96,700.00 and $154,900.00 per year, depending on experience, location, and employer.

What are some typical projects or responsibilities that an energy systems engineer might handle on a daily basis?

As an Energy Systems Engineer, you may work on projects involving the design, analysis, and optimization of power generation or distribution systems, implementation of renewable energy solutions, or integration of energy storage. Daily tasks often include conducting system modeling and simulations, preparing technical reports, collaborating with multidisciplinary teams, and liaising with clients or stakeholders to align project goals. You may also be responsible for monitoring system performance, troubleshooting issues, and staying updated with evolving technologies and regulations in the energy sector. This variety ensures a dynamic work environment and valuable opportunities to grow your expertise in sustainable energy solutions.

What are the key skills and qualifications needed to thrive as an energy systems engineer?

To thrive as an Energy Systems Engineer, you need a strong background in engineering principles, energy systems modeling, and renewable energy technologies, typically supported by a degree in electrical, mechanical, or energy engineering. Familiarity with simulation tools like MATLAB/Simulink, energy management systems (EMS), and relevant certifications such as Professional Engineer (PE) licensure is highly beneficial. Strong problem-solving abilities, project management skills, and effective communication are critical soft skills in this field. These competencies enable professionals to design, optimize, and implement efficient energy solutions that meet both technical requirements and client needs.

What does an energy systems engineer do?

An Energy Systems Engineer designs, analyzes, and optimizes energy generation, distribution, and storage systems to improve efficiency and sustainability. They work with renewable energy sources, power grids, and energy management systems to develop innovative solutions for reducing energy consumption and costs. Their role often involves conducting simulations, assessing environmental impacts, and integrating new technologies to enhance system performance. Depending on the industry, they may work in utilities, manufacturing, or research to support the transition to cleaner and more efficient energy solutions.

What are popular job titles related to Energy Systems Engineer jobs in California?

For Energy Systems Engineer jobs in California, the most frequently searched job titles are:

What job categories do people searching Energy Systems Engineer jobs in California look for?

The top searched job categories for Energy Systems Engineer jobs in California are:

Energy Systems Engineer jobs near you
Infographic showing various Energy Systems Engineer job openings in California as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 10% Part Time, 2% Temporary, 3% Contract, and 1% Nights. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $125,549 per year, or $60.4 per hour.

Mesa Energy Systems, Inc.

EMCOR Group Inc

Santa Ana, CA • On-site

$31.32 - $56.95/hr

Full-time

Re-posted 2 days ago

Job description

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.


  • Maintain daily operations of boilers. 
  • Complete daily checks and maintain necessary operating records. 
  • Perform PM maintenance and repairs to boilers and associated equipment. 
  • Perform monthly testing of all safeties. 
  • Complete annual tuning and inspections of boilers. 
  • Monitor chemical feeds for boiler systems. 
  • Monitor exhaust/stack emissions.  

  • Must have completed 4-year apprenticeship program or technical schooling 
  • Must have 5+ years of commercial air conditioning experience 
  • Must be available for emergency call outs 
  • Must be a team player and able to work with other trades and client’s staff. 
  • Rule 1415 certified 
  • EMS experience a plus (Staefa/Siemens) 
  • Valid driver's license in good standing 

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


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

Please review our Affirmative Action Policy.


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 EMCORs normal application process it is probably fraudulent.

Compensation Range:   $31.32 - $56.95 per hour The hourly rate is determined by the CBA/rate sheet and test results. Benefits are provided through local labor union aligned with collective bargaining agreement. 

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