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Part Time Engineer Jobs in Brea, CA (NOW HIRING)

Tetra Tech, Inc.

Engineering Intern

Diamond Bar, CA · On-site

$18 - $23/hr

Tetra Tech has an immediate opening for a part-time engineering intern. This is a great opportunity to learn the business side of engineering consulting while obtaining hands-on experience on project ...

New

U.S. Navy

Civil Engineer

Los Angeles, CA

$2.9K - $5.8K/mo

PART-TIME OPPORTUNITIES There are part-time roles as a Civil Engineer in the Navy. Serving part-time as a Reserve Sailor, your duties will be carried out during your scheduled drilling and training ...

U.S. Navy

Civil Engineer

Pomona, CA · On-site

$2.9K - $5.8K/mo

PART-TIME OPPORTUNITIES There are part-time roles as a Civil Engineer in the Navy. Serving part-time as a Reserve Sailor, your duties will be carried out during your scheduled drilling and training ...

U.S. Navy

Civil Engineer

Los Angeles, CA · On-site

$2.9K - $5.8K/mo

PART-TIME OPPORTUNITIES There are part-time roles as a Civil Engineer in the Navy. Serving part-time as a Reserve Sailor, your duties will be carried out during your scheduled drilling and training ...

U.S. Navy

Civil Engineer

Pomona, CA

$2.9K - $5.8K/mo

PART-TIME OPPORTUNITIES There are part-time roles as a Civil Engineer in the Navy. Serving part-time as a Reserve Sailor, your duties will be carried out during your scheduled drilling and training ...

Stantec

Civil Engineer - EIT

Pasadena, CA · On-site

Civil Engineer - EIT Your Opportunity As part of our team, you will work to plan, design, and ... Regular full-time and part-time employees (working at least 20 hours per week) have access to ...

Stantec

Mechanical Engineer

Pasadena, CA · On-site

$126K - $189K/yr

Your Opportunity As a Mechanical Engineer, your role in our professional consulting services team ... Regular full-time and part-time employees (working at least 20 hours per week) have access to ...

Stantec

Senior Civil Engineer

Irvine, CA · On-site

$126K - $189K/yr

Review and approve civil engineering design analysis, drawings and specifications for completeness ... Regular full-time and part-time employees (working at least 20 hours per week) have access to ...

Mayman Aerospace

Manufacturing Engineer

Long Beach, CA

$76K - $98K/yr

Manufacturing Engineer Mayman Aerospace created the world's only successful turbine powered Jetpack ... Act as part-time technician during Low-Rate Initial Production, physically building and assembling ...

Arcadis

Senior Resident Engineer

Los Angeles, CA · On-site

$106K - $136K/yr

The Resident Engineer reviews the progress of the work to ensure compliance with the contract ... Arcadis offers benefits for full time and part time positions. These benefits include medical ...

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All JobsEngineer JobsPart Time Engineer JobsPart Time Engineer Jobs in Brea, CA

Part Time Engineer information

What engineers make $200,000 a year?

Senior engineers in fields such as software, petroleum, aerospace, and electrical engineering can earn $200,000 or more annually, especially with extensive experience, advanced skills, and often in high-demand industries or leadership roles. Compensation varies based on location, company size, and specialization, with some engineers earning additional bonuses or stock options.

What engineer makes $500,000 a year?

Highly experienced engineers in specialized fields such as petroleum engineering, aerospace engineering, or software engineering working in senior or executive roles can earn $500,000 or more annually. These positions often require advanced skills, certifications, and significant industry experience, typically involving leadership responsibilities or working in high-demand sectors.

How do part-time engineers typically balance project responsibilities with limited working hours?

Part-time engineers often focus on specific project components or deliverables, allowing them to contribute effectively within their scheduled hours. Clear communication with supervisors and team members is essential to set realistic expectations and maintain progress. Many organizations use project management tools and regular check-ins to help part-time engineers stay aligned with full-time staff and meet deadlines. Flexibility and proactive planning are key to ensuring that work is completed efficiently without sacrificing quality.

What Does a Part-Time Engineer Do?

Part-time engineers develop and monitor the construction of the functional aspects of a product, structure, or system for their company or client. Unlike full-time engineers, part-time engineers typically work thirty hours or less a week. Specific job duties vary, depending on their specific engineering industry. For example, civil engineers design, construct, and maintain large infrastructure projects for municipalities and other agencies, such as bridges, highways, and airports. As the structures wear down, civil engineers reevaluate the needs of the area and may redesign the current structure or create a new system. Electrical engineers draft plans for electrical systems. Once the systems are created and installed, electrical engineers may also be responsible for maintaining the system to ensure it continues to run efficiently.

What's a good side hustle for an engineer?

Engineers can pursue side hustles such as freelance consulting, designing and selling 3D printed products, or developing software applications. These options leverage technical skills and often require familiarity with relevant tools or platforms, offering flexible schedules and additional income streams.

What are the key skills and qualifications needed to thrive as a Part Time Engineer, and why are they important?

To thrive as a Part Time Engineer, you typically need a relevant engineering degree, foundational technical knowledge, and problem-solving skills. Familiarity with engineering software (such as AutoCAD, MATLAB, or SolidWorks) and industry-specific certifications or systems is often required. Strong time management, effective communication, and adaptability are crucial soft skills for balancing multiple projects and collaborating with teams on a flexible schedule. These skills ensure that part-time engineers can deliver high-quality work efficiently while meeting the dynamic needs of employers.

Can engineering be a part-time job?

Yes, engineering can be a part-time job, often involving consulting, freelance projects, or contract work. These roles typically require strong technical skills, relevant certifications, and the ability to manage flexible schedules, but availability depends on the employer and project scope.

What is the difference between Part Time Engineer vs Contract Engineer?

AspectPart Time EngineerContract Engineer
CredentialsTypically requires relevant engineering degree and certificationsSimilar credentials, often with additional contractual agreements
Work EnvironmentUsually works on-site or remotely for multiple employers, flexible hoursWorks on specific projects for a set duration, often on-site
Employer UsageEmployers hire part-time for ongoing or intermittent tasksEmployers hire contractors for project-based work

Both Part Time Engineers and Contract Engineers share similar credentials and work environments, but differ mainly in employment structure and duration. Part Time Engineers typically work flexible hours for multiple employers, while Contract Engineers focus on specific projects for a fixed period.

What is a part-time engineer?

A part-time engineer is a professional who works fewer hours than a full-time engineer, typically less than 35-40 hours per week, depending on the employer's definition. Part-time engineers may handle the same types of technical tasks as their full-time counterparts, such as designing, testing, or maintaining systems and products, but on a reduced schedule. This flexible arrangement can be ideal for individuals seeking work-life balance, pursuing further education, or managing other personal responsibilities while still maintaining a career in engineering.
More about Part Time Engineer jobs
What are the most commonly searched types of Engineer jobs in Brea, CA? The most popular types of Engineer jobs in Brea, CA are:
What cities near Brea, CA are hiring for Part Time Engineer jobs? Cities near Brea, CA with the most Part Time Engineer job openings:
Part Time Engineer jobs near you
Infographic showing various Part Time Engineer job openings in Brea, CA as of July 2026, with employment types broken down into 67% Full Time, and 33% Contract. Highlights an 100% In-person job distribution.

Engineering Intern

Tetra Tech, Inc.

Diamond Bar, CA • On-site

$18 - $23/hr

Part-time, Internship

Posted 2 days ago

New

Tetra Tech rating

6.4

Company rating: 6.4 out of 10

Based on 42 frontline employees who took The Breakroom Quiz

395th of 439 rated engineering

Job description

Discover your full potential. At Tetra Tech, we are collaborating with industry-leading experts for a sustainable future for our world. We combine consulting and engineering with advanced analytics and technology to solve the world's most complex challenges. Our innovation hubs across the globe will enable you to share ideas and best practices while growing your professional network. Wherever you are in your career journey, you will benefit from working with world-class engineers, scientists, and technical specialists.
At Tetra Tech, we are Leading with Science to solve the world's most complex challenges. Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world. For over 50 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world.
Join Tetra Tech to make a real difference. Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world. Discover your full potential - join us to advance your career while leaving a lasting legacy.
Apply today and join the company that is Leading with Science®.
Tetra Tech has an immediate opening for a part-time engineering intern. This is a great opportunity to learn the business side of engineering consulting while obtaining hands-on experience on project deliverables. The pay scale for this position is $18-$23 per hour, based on qualifications and experience.
Your Role:
Under general supervision, the incumbent will assist with engineering assignments, data entry, data management, proofing preparation and assembly of reports, produce excel spreadsheets, project coordination, and assist with miscellaneous engineering and general office tasks.
Qualifications:
  • Pursuing a bachelor's degree in Civil, Chemical, Mechanical or Environmental Engineering
  • Knowledge and use of Microsoft Office required
  • Strong interpersonal, oral and written communication skills required
  • Ability to handle multiple priorities in a fast-paced environment
  • Excellent listening skills and attention to detail
  • Self-motivated and a strong desire to learn and contribute to the team

Life at Tetra Tech:
The perks of working at Tetra Tech include:
  • Comprehensive and market-competitive benefits.
  • Merit-based financial rewards.
  • Flexibility and company-wide commitment to work/life balance.
  • Collaborative team atmosphere that values the contributions of all employees.
  • Learning and development opportunities for ongoing professional growth.

About Tetra Tech:
Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide. With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science® to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.
Tetra Tech is proud to be an Equal Opportunity Employer. All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sexual orientation, gender identity, status as a protected veteran, or any other characteristic protected by law. Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans.
We invite applications from all interested parties.
Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities:
LinkedIn: @TetraTechCareers
X (Twitter): @TetraTechJobs
We thank all applicants for their interest, however, only those candidates selected for interviews will be contacted.
Please no phone calls or agencies.

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