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Commissioning Assistant Jobs in California (NOW HIRING)

CAI

Building Commissioning Engineer

San Francisco, CA · On-site

$80K - $130K/yr

As a Commissioning Engineer, you will play a crucial role in ensuring the successful installation ... Ensure compliance with relevant codes, standards, and safety regulations. * Assist the project ...

CAI

Building Commissioning Engineer

San Diego, CA · On-site

$80K - $130K/yr

As a Commissioning Engineer, you will play a crucial role in ensuring the successful installation ... Ensure compliance with relevant codes, standards, and safety regulations. * Assist the project ...

CAI

Building Commissioning Engineer

San Francisco, CA · On-site

$80K - $130K/yr

As a Commissioning Engineer, you will play a crucial role in ensuring the successful installation ... Ensure compliance with relevant codes, standards, and safety regulations. * Assist the project ...

JLL

Commissioning Project Engineer

San Francisco, CA

Liaise with team members, outside consultants and contractors to assist in leading cross functional teams on various projects. * Understanding and capability of how to develop strong Commissioning ...

P2S Inc.

Senior Commissioning Agent

San Jose, CA · On-site

$150K - $190K/yr

Perform pre-functional inspections and field observations of equipment and systems. Assist in ... AABC Commissioning Agent (CxA) or (BCxA), ASHRAE Commissioning Process Management Professional ...

Legence

Senior Commissioning Agent

San Jose, CA · On-site

$150K - $190K/yr

Perform pre-functional inspections and field observations of equipment and systems. Assist in ... AABC Commissioning Agent (CxA) or (BCxA), ASHRAE Commissioning Process Management Professional ...

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Commissioning Assistant information

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How much do commissioning assistant jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for commissioning assistant in California is $20.32, according to ZipRecruiter salary data. Most workers in this role earn between $15.91 and $22.31 per hour, depending on experience, location, and employer.

What is a commissioning assistant?

Commissioning Assistants are professionals who support the commissioning process of new or refurbished buildings, systems, or equipment. Their role includes coordinating schedules, assisting with documentation, and ensuring that systems function as intended according to project specifications. They often work under the supervision of a Commissioning Manager or Engineer and collaborate with various teams such as construction, engineering, and quality assurance. Commissioning Assistants play a key part in ensuring projects are completed efficiently, safely, and within compliance standards.

What are the key skills and qualifications needed to thrive as a commissioning assistant?

To thrive as a Commissioning Assistant, you need a solid understanding of engineering principles, project documentation, and quality assurance processes, often supported by a technical diploma or degree. Familiarity with commissioning management software, building management systems (BMS), and relevant safety certifications such as OSHA are typically required. Attention to detail, organizational skills, and effective communication help you coordinate among stakeholders and maintain project timelines. These skills and qualities are essential to ensure systems are installed, tested, and handed over efficiently and safely in compliance with project standards.

What are some common challenges faced by a commissioning assistant during project handover phases?

As a Commissioning Assistant, one common challenge during project handover is ensuring that all systems and documentation are thoroughly tested, completed, and meet compliance standards within tight deadlines. Coordinating between multiple teams—such as engineering, construction, and client representatives—can also present difficulties, especially when schedules or expectations differ. Attention to detail and strong organizational skills are essential to track outstanding issues and ensure seamless communication, helping to minimize delays and facilitate a smooth transition to operations.

What is the difference between Commissioning Assistant vs Commissioning Engineer?

AspectCommissioning AssistantCommissioning Engineer
CredentialsTypically requires a diploma or associate degree in engineering or related fieldUsually holds a bachelor's degree in engineering or technical discipline
Work EnvironmentSupports testing, documentation, and coordination tasks on-site or in officesLeads testing, troubleshooting, and system integration activities on-site
Industry UsageCommonly employed in construction, energy, and industrial projectsInvolved in project management and technical oversight in similar industries

The main difference is that a Commissioning Assistant supports the commissioning process through documentation and coordination, while a Commissioning Engineer takes a more active role in testing and system troubleshooting. The Assistant typically requires less experience and focuses on supporting tasks, whereas the Engineer leads technical activities on-site.

What skills are needed for commissioning assistant?

A commissioning assistant needs strong technical knowledge of systems and equipment, excellent communication skills, and attention to detail. Familiarity with industry standards, basic troubleshooting, and proficiency with relevant tools or software are also important. Additionally, organizational skills and the ability to work in a team environment are essential for coordinating commissioning activities.

What are the most commonly searched types of Commissioning jobs in California?

The most popular types of Commissioning jobs in California are:

What are popular job titles related to Commissioning Assistant jobs in California?

For Commissioning Assistant jobs in California, the most frequently searched job titles are:

What job categories do people searching Commissioning Assistant jobs in California look for?

The top searched job categories for Commissioning Assistant jobs in California are:

What cities in California are hiring for Commissioning Assistant jobs?

Cities in California with the most Commissioning Assistant job openings:

Commissioning Assistant jobs near you

Building Commissioning Engineer

CAI

San Francisco, CA • On-site

$80K - $130K/yr

Full-time

Medical, Life, PTO

Re-posted 4 days ago

Job description

We are seeking a highly skilled and detail-oriented Commissioning Engineer to join our team. As a Commissioning Engineer, you will play a crucial role in ensuring the successful installation, startup, and testing of mechanical, electrical, plumbing, and control systems for complex projects. This is an exciting opportunity to be involved in all stages of capital construction project delivery and ensure that all systems meet the required specifications, quality standards, and safety regulations.
Key Responsibilities:
  • Oversee and execute the commissioning process of MEP and control systems for projects.
  • Conduct thorough inspections, testing, and troubleshooting of equipment and systems to ensure they meet design specifications.
  • Develop and implement detailed commissioning plans, including testing schedules, procedures, and required documentation.
  • Develop system specific Pre-Functional Checklists and Functional Performance Test protocols.
  • Assist with design review of MEP systems.
  • Assist with coordination of field activities and work alongside technicians and trade partners during the construction and testing phases.
  • Perform functional performance tests to verify system performance against design parameters.
  • Troubleshoot and resolve any issues during the commissioning process to ensure systems operate efficiently and safely.
  • Prepare and review test reports, commissioning documentation, and final project handover packages.
  • Ensure compliance with relevant codes, standards, and safety regulations.
  • Assist the project manager with commissioning deliverable and activity tracking.
  • Collaborate with project managers, engineers, and other stakeholders to ensure smooth project execution and timely delivery.
  • Maintain detailed records of commissioning activities and results for future reference.

Qualifications:
  • Bachelor's degree in Engineering (Electrical, Mechanical, or related field).
  • Proven experience as a Commissioning Engineer, preferably in life sciences, semiconductors, or other mission critical industries.
  • Strong knowledge of electrical, mechanical, and control systems.
  • Familiarity with commissioning procedures, testing methodologies, and industry standards.
  • Proficiency in reading and interpreting technical drawings and specifications.
  • Excellent troubleshooting, problem-solving, and analytical skills.
  • Ability to work independently and as part of a team in a fast-paced environment.
  • Strong communication skills, both written and verbal.
  • Attention to detail and a strong commitment to safety and quality.
  • Ability to travel to job sites as required, including travel out of state, as needed.
  • Preferred Skills:
  • Certifications in relevant fields (such as CCP, CxA, BCxA, LEED, PMP, etc)
  • Experience with specific commissioning/construction software and tools such as Cx Alloy, Kneat, Procore, ACC, Bluebeam, etc
  • Knowledge of industry-specific standards and regulations.

About CAI
CAI was established in 1996, that has grown year over year to more than 800 people worldwide. We provide commissioning, qualification, validation, start-up, project management and consulting services related to operational readiness to FDA regulated and other mission critical industries.
Are You Ready?
Our approach is simple; we put the client's interests first, we do not stop until it is right, and we will do whatever it takes to get there.
We are committed to living our Foundational Principles, both professionally and personally:
We act with integrity
We serve each other
We serve society
We work for our future
Benefits
Our full-time positions offer competitive compensation and benefits which include: 24 days PTO and 5 sick days per year, health insurance at extremely low cost to employee, financial support for both internal and external professional education as well as 70% long term disability paid for by the company.
#LI-MV1 #MISSIONCRITICAL
$80,000 - $130,000 a year
Average base salary range - not including benefits, and potential overtime and/or Cost of Living Adjustment.
CAI Benefits:
• Comprehensive Health Insurance coverage
• 24 days of Paid Time Off
• Company paid Life Insurance
• Company paid Long Term Disability
We are an equal opportunity employer; we are proud to employ veterans and promote diversity and inclusion in our workplace. Diversity is a strength for our global company. We pledge that CAI will be operated in a way that is fair and equitable to all - our employees, our customers, and the broader society.
This job description is not all inclusive and you may be asked to do other duties. CAI will also consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of the Fair Chance Act (FCA) / Fair Chance Ordinance (FCO).
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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