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Weekend Mechanical Engineer Jobs in California (NOW HIRING)

Cimarron

Mechanical Engineer

Lompoc, CA · On-site

$140K - $180K/yr

Willingness to support off-hour shifts during launch operations (nights/weekends as needed ... Bachelor's degree in mechanical engineering, aerospace engineering or related engineering ...

New

iQuasar, LLC

Mechanical Engineer

Lompoc, CA · On-site

$90 - $115/hr

Willingness to support off‑hour shifts during launch operations (nights/weekends as needed ... Bachelor's degree in mechanical engineering, aerospace engineering or related engineering ...

General Matter

Mechanical Engineer

Los Angeles, CA · On-site

$80K - $170K/yr

Ability to work extended hours and weekends as necessary. Equal Opportunity Employer General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit ...

Managed Staffing

Mechanical Engineer

Irvine, CA · On-site

$50 - $56/hr

Mechanical Engineer Location: Onsite - Irvine, CA Shift: 1st Shift US Citizenship Required About the Role We are seeking a Mechanical Engineer I to support the design, analysis, and development of ...

General Matter

Mechanical Engineer

Los Angeles, CA · On-site

$80K - $170K/yr

Ability to work extended hours and weekends as necessary. Equal Opportunity Employer General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit ...

GITAI

Mechanical Engineer

Los Angeles, CA

Your Mission The Mechanical Engineer owns mechanical hardware from concept through test. Space ... Flexibility to work weekends as needed based on build and test schedules. * Willingness to spend up ...

iQuasar LLC

Mechanical Engineer

Lompoc, CA · On-site

$140K - $180K/yr

Willingness to support off-hour shifts during launch operations (nights/weekends as needed ... Bachelor's degree in mechanical engineering, aerospace engineering or related engineering ...

IQUASAR LLC

Mechanical Engineer

Lompoc, CA · On-site

$140K - $180K/yr

Willingness to support off-hour shifts during launch operations (nights/weekends as needed ... Bachelor's degree in mechanical engineering, aerospace engineering or related engineering ...

GITAI

Mechanical Engineer

Los Angeles, CA · On-site

Your Mission The Mechanical Engineer owns mechanical hardware from concept through test. Space ... Flexibility to work weekends as needed based on build and test schedules. * Willingness to spend up ...

Socket.dev

Mechanical Engineer

Menlo Park, CA · On-site

$110 - $180/hr

Pragmatic Optimism Excellence without Ego Proactive Collaboration About the Role Mainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or ...

CEVIANS LLC

Mechanical Engineer

Costa Mesa, CA · On-site

$70 - $90/hr

In this supporting role, the Mechanical Engineer will help interpret requirements and perform detailed design activities related to avionics and defense display assemblies. Responsibilities include ...

Mainspring Energy

Mechanical Engineer

Menlo Park, CA

$119K - $140K/yr

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate ...

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Weekend Mechanical Engineer information

What is a weekend mechanical engineer?

Weekend Mechanical Engineers are professionals who work primarily during weekends to maintain, repair, or oversee mechanical systems and equipment. Their duties often include troubleshooting machinery, performing preventive maintenance, and ensuring that all mechanical operations run smoothly outside of standard business hours. These roles are common in industries that operate around the clock, such as manufacturing plants, utilities, and facilities management. Weekend shifts help companies minimize downtime and ensure continuous production or service. This position typically requires a degree in mechanical engineering and hands-on experience with mechanical systems.

What does a weekend mechanical engineer do?

Weekend Mechanical Engineers are often responsible for preventive maintenance, urgent repairs, and equipment upgrades that are best performed during periods of low production activity. The weekend shift allows for more extensive system checks and larger projects that might disrupt regular operations if done during the week. Collaboration is usually with maintenance crews, production supervisors, and sometimes external vendors, all working together to minimize downtime. The pace can be fast, as the goal is to complete critical tasks before the next production cycle begins.

What skills and qualifications are needed to thrive as a weekend mechanical engineer?

To thrive as a Weekend Mechanical Engineer, you generally need a bachelor's degree in mechanical engineering, strong problem-solving abilities, and hands-on technical experience. Familiarity with CAD software, maintenance management systems, and relevant safety certifications such as OSHA are typically required. Strong communication, time management, and adaptability are essential soft skills for managing weekend shifts and collaborating with team members. These competencies ensure efficient equipment operation, minimal downtime, and effective team coordination during critical weekend hours.

What is the difference between Weekend Mechanical Engineer vs Part-Time Mechanical Technician?

AspectWeekend Mechanical EngineerPart-Time Mechanical Technician
CredentialsBachelor's in Mechanical Engineering, relevant certificationsTechnical diploma or certification, some engineering background
Work EnvironmentIndustrial plants, manufacturing facilities, maintenance sitesMaintenance workshops, factories, on-site repair
Employer & Industry UsageEngineering firms, manufacturing companies, facilities managementManufacturing plants, service providers, maintenance companies

Weekend Mechanical Engineers typically hold engineering degrees and work on complex projects during weekends, focusing on design, analysis, or oversight. Part-Time Mechanical Technicians usually have technical certifications and perform hands-on maintenance or repairs on a part-time basis. Both roles are common in manufacturing and industrial settings but differ in responsibilities and qualifications.

Can you be a part-time weekend mechanical engineer?

Weekend mechanical engineering roles are available in some companies, often requiring flexible schedules and specific skills in design, maintenance, or testing. These positions may be part-time or contract-based, allowing engineers to work on weekends while maintaining other commitments. Availability depends on employer needs and job requirements, and relevant certifications or experience can improve chances of securing such roles.

Do weekend mechanical engineers work on weekends?

Weekend mechanical engineers may work on weekends depending on the employer and project requirements. Some roles require weekend shifts to meet deadlines or maintain equipment, while others follow a standard weekday schedule. Flexibility and availability for weekend work are often important in this field.

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

The most popular types of Mechanical Engineer jobs in California are:

What cities in California are hiring for Weekend Mechanical Engineer jobs?

Cities in California with the most Weekend Mechanical Engineer job openings:

Weekend Mechanical Engineer jobs near you
Infographic showing various Weekend Mechanical Engineer job openings in California as of August 2026, with employment types broken down into 33% Full Time, and 67% Contract. Highlights an 67% In-person, and 33% Hybrid job distribution.

Mechanical Engineer

Pan-Pacific Mechanical

Fountain Valley, CA • On-site

$120K - $150K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 5 days ago

Job description

Join the top full-mechanical contractor in the West — now expanding nationwide.

We deliver innovative, industry-changing commercial and healthcare projects and foster a culture that is truly unmatched. We offer excellent benefits, including employee ownership, 401k matching, and internal growth opportunities. Apply today for immediate consideration!

We are seeking a Mid-Level to Senior Mechanical Engineer to join our growing team. If you’re passionate about HVAC design, thrive in a collaborative design-build environment, and want exposure to everything from commercial packaged systems to complex central plants and laboratory exhaust systems — we want to connect.

This position plays a key role in the HVAC design-build process — from concept development through construction coordination. You’ll collaborate with fellow engineers, preconstruction executives, project managers, and field teams to deliver safe, energy-efficient, and constructible mechanical systems across diverse commercial sectors including healthcare, high-rise, entertainment, transportation, biotech, laboratories, and more.

Qualifications

  • 5+ years of experience in HVAC design for commercial projects
  • Bachelor’s degree in Mechanical Engineering; PE license strongly preferred
  • Experience with vertical market segments noted above
  • Notable experience with complex HVAC systems including custom air handling units, hydronic systems such as chilled and heating hot water, DDC controls, and central plants
  • Proficiency in Revit MEP
  • Experience with load and energy modeling software (Trace, HAP, eQuest, EnergyPro, EnergyPlus, etc.)
  • Must be able to communicate in a professional manner, be able to work with various personalities and work styles, and be a collaborative team-player aligned with our core values of Family, Loyalty, and Respect
  • Proven ability to meet fast deadlines, and prioritize tasks.

No third-party candidates will be accepted. This job description is not intended to detail every responsibility but to provide a general overview. As the nature of business demands change, so may the essential functions of this position. Salary range reflects total compensation. We are unable to offer work sponsorship for this position.