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Mechanical Engineer Temporary Jobs in California

Leidos

Mechanical Engineer

San Diego, CA · On-site

Support the generation and technical orchestration of Temporary Alteration (TEMPALT) packages in ... Education: Bachelor of Science (BS) in Mechanical Engineering, Marine Engineering, Naval ...

C5R

Mechanical Engineer

San Francisco, CA · On-site

$100 - $125/hr

The role We are hiring a mechanical engineer to design, build, and iterate on thephysical systems ... Compensation & terms We are open to full‑time roles and temporary stints of at least 3 months.

Belcan

Mechanical Engineer II

Irvine, CA · On-site

$45 - $55/hr

Mechanical Engineer II Pay Rate: $45-$55/hr Location: Irvine, CA Area Code: 714 ZIP Code: 92618 ... We offer excellent opportunities for contract, temporary, temp-to-hire, and direct assignments. We ...

California Temp Services, Inc

Senior Mechanical Engineer Location: San Fernando Valley, CA Schedule: Monday-Friday, 7:00 a.m.-4:00 p.m. Employment Type: Full-Time Salary: $99,840 Responsibilities * Lead the design and development ...

Belcan

Mechanical Engineer II

Irvine, CA · On-site

$40.01 - $64.90/hr

Mechanical Engineer II Pay Rate: $40.01 - $64.9/hr. Location: Irvine, CA Area Code: 949, 714 ZIP ... We offer excellent opportunities for contract, temporary, temp-to-hire, and direct assignments. We ...

Actalent

Mechanical Engineer

Sunnyvale, CA

$60 - $65/hr

Bachelor's degree in Mechanical Engineering or a related field and/or equivalent industry ... If eligible, the benefits available for this temporary role may include the following: * Medical ...

New

Actalent

Mechanical Engineer

San Jose, CA

$60 - $85/hr

Mechanical Design Engineer This role focuses on designing and delivering next-generation networking ... If eligible, the benefits available for this temporary role may include the following: * Medical ...

New

EUGENUS INC

Staff Mechanical Engineer

San Jose, CA

Director, Mechanical Engineering Supervises: None Department: Hardware Core Technology Center ... temp wafer heaters, gas distribution showerheads, electrostatic chucks, wafer lift mechanisms ...

EUGENUS INC

Staff Mechanical Engineer

San Jose, CA · On-site

Director, Mechanical Engineering Supervises: None Department: Hardware Core Technology Center ... temp wafer heaters, gas distribution showerheads, electrostatic chucks, wafer lift mechanisms ...

Eugenus

Staff Mechanical Engineer

San Jose, CA · On-site

$150 - $200/hr

Support personnel in the generation of detailed engineering documentation required to effectively ... temp wafer heaters, gas distribution showerheads, electrostatic chucks, wafer lift mechanisms ...

Heihotels

Chief Engineer - Temporary

Los Angeles, CA · On-site

$80K - $82K/yr

Responsible for the preventative maintenance and repair of the hotel's mechanical/electrical ... Maintains engineering related check book accounting procedures to ensure department operates with ...

Leidos

Mechanical Engineer- CM & TEMPALT

San Diego, CA · On-site

$87K - $157K/yr

... Mechanical Engineer supporting NIWC Pacific. Candidate will support cutting-edge maritime ... Support the generation and technical orchestration of Temporary Alteration (TEMPALT) packages in ...

Leidos

Mechanical Engineer- CM & TEMPALT

San Diego, CA · On-site

$87K - $157K/yr

... Mechanical Engineer supporting NIWC Pacific. Candidate will support cutting-edge maritime ... Support the generation and technical orchestration of Temporary Alteration (TEMPALT) packages in ...

Leidos

Mechanical Engineer- CM & TEMPALT

San Diego, CA · On-site

$87K - $157K/yr

... Mechanical Engineer supporting NIWC Pacific. Candidate will support cutting-edge maritime ... Support the generation and technical orchestration of Temporary Alteration (TEMPALT) packages in ...

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Mechanical Engineer Temporary information

What does a temporary mechanical engineer do?

A temporary mechanical engineer is hired for a specific period or project to assist with designing, developing, testing, or maintaining mechanical systems. Their duties are similar to those of permanent mechanical engineers, but their employment is limited to a certain duration, often to meet increased workload or specialized project needs. Temporary mechanical engineers may work on tasks such as drafting technical drawings, performing calculations, conducting tests, and supporting production teams. This role provides flexibility for both the employer and the engineer, making it ideal for project-based work.

What does a temporary mechanical engineer do?

As a temporary mechanical engineer, your job is to support a company for the duration of your assignment, which is usually until a specific project is completed. In this role, you may help plan the construction of a building, determine the industrial needs of the project, help obtain any materials the blueprint design requires, provide design recommendations, and maintain the equipment used throughout the project. You may use a handheld device to scan or check materials. Temporary mechanical engineers work on projects of various sizes; you may install single pieces of delicate equipment in an existing building, or plan the removal and reinstallation of walls, ceilings, or support structures.

What are the typical projects and responsibilities for a mechanical engineer in a temporary position?

Mechanical Engineers in temporary roles are often brought in to support specific projects, such as product design updates, testing, or process improvements. You may be tasked with conducting technical analyses, creating CAD models, or assisting with prototype development under tight deadlines. Collaboration is common, as you'll frequently work with cross-functional teams like manufacturing, quality assurance, and project management to ensure project milestones are met. This fast-paced environment can provide valuable exposure to diverse challenges and industries, making it a great opportunity to build skills and expand your professional network.

What are the key skills and qualifications needed to thrive as a temporary mechanical engineer, and why are they important?

To thrive as a Mechanical Engineer Temporary, you need a solid understanding of mechanical design principles, engineering mathematics, and a relevant engineering degree, often supported by EIT or PE credentials. Proficiency in CAD software (such as SolidWorks or AutoCAD), simulation tools, and project management systems is typically required. Strong problem-solving abilities, adaptability, and effective teamwork make candidates stand out in this role. These skills and qualities are crucial for delivering timely, innovative engineering solutions and integrating seamlessly into project-based teams.

What is the difference between Mechanical Engineer Temporary vs Mechanical Engineer Permanent?

AspectMechanical Engineer TemporaryMechanical Engineer Permanent
CredentialsTypically requires a bachelor's degree in mechanical engineering; certifications are optionalSame as temporary; often preferred to have professional engineer (PE) license
Work EnvironmentProject-based, short-term assignments, often in manufacturing, automotive, or aerospaceLong-term employment, involved in ongoing design, development, and maintenance projects
Employer & Industry UsageUsed by staffing agencies and companies for short-term needsEmployed directly by companies for continuous roles
Search & Comparison IntentCommonly compared for contract vs full-time rolesOften contrasted with temporary roles for career stability

In summary, a Mechanical Engineer Temporary typically works on short-term projects through staffing agencies, requiring similar credentials as permanent roles but offering less job stability. Permanent Mechanical Engineers have ongoing employment with benefits and career growth opportunities, making them suitable for those seeking long-term stability.

More about Mechanical Engineer Temporary jobs

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 are popular job titles related to Mechanical Engineer Temporary jobs in California?

For Mechanical Engineer Temporary jobs in California, the most frequently searched job titles are:

What job categories do people searching Mechanical Engineer Temporary jobs in California look for?

The top searched job categories for Mechanical Engineer Temporary jobs in California are:

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

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

Mechanical Engineer Temporary jobs near you
Infographic showing various Mechanical Engineer Temporary job openings in California as of August 2026, with employment types broken down into 92% Full Time, 6% Part Time, 1% Contract, and 1% Nights. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution.

Mechanical Engineer

Leidos

San Diego, CA • On-site

Full-time

Re-posted 4 days ago

Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 153 frontline employees who took The Breakroom Quiz

81st of 500 rated business services

Job description

The Leidos Undersea Systems Division (USD) team currently has an opening for a Mechanical Engineer supporting NIWC Pacific. Candidate will support cutting-edge maritime technologies and work across a multitude of product lines. Responsibilities will be split dynamically between Configuration Management (CM) and managing the development and execution of Temporary Alteration Packages (TEMPALT) for temporary installation of equipment/systems on Navy platforms.
As a key member of a large, collaborative engineering team, candidate will act as a primary technical bridge ensuring that our advanced maritime hardware configurations are flawlessly documented and successfully integrated into naval vessels. This position offers a unique balance of detailed engineering, configuration control, shipboard technical documentation, and hands-on system integration support.
This position will require the candidate to maintain a Secret Clearance.
This position will require the candidate to work an onsite 9/80B schedule (80 hours of work into nine
days over a two-week period, allowing for every other Friday off) to align with the NIWC government team.
Key Responsibilities
Configuration Management (CM) Support
  • Baseline Management: Establish and maintain system baseline configurations, drawing trees, and documentation packages across multiple systems.
  • Engineering Change Control: Perform detailed reviews of engineering drawings, 3D CAD models (Solid Edge), and technical specifications to verify standards compliance, accuracy, and completeness.
  • Change Documentation: Manage Engineering Change Orders (ECOs) and deviations, leading them through review boards and ensuring exact lifecycle documentation.
  • Audit Support: Track hardware revisions and ensure physical systems match the digitized as-designed models across multiple product lines.
  • Cross-Functional Integration: Collaborate across systems, electrical, and software engineering disciplines to ensure seamless configuration traceability.

2. Shipboard Installation & TEMPALT Support
  • TEMPALT Packet Generation: Support the generation and technical orchestration of Temporary Alteration (TEMPALT) packages in accordance with NAVSEA and US Navy requirements (e.g., NAVSEAINST 4790.8).
  • Design Review: Perform reviews of shipboard installation packages, including review of designs for structural foundations, shock/vibration isolation mountings, cabling pathways, and power distribution interfaces.
  • Documentation & Planning: Develop technical installation instructions, shipboard safety briefs, drawing packages, and testing/restoration procedures.
  • Ship Checks: Conduct ship checks and site surveys on naval vessels to assess structural fitment, clearance limits, and interference resolution.
  • On-Site Installation Support: Provide on-site technical support to shipyards, installation teams, and ship crew during TEMPALT execution and initial system commissioning.
  • Navy Stakeholder Liaison: Coordinate closely with Navy program offices, regional maintenance centers (RMCs), and ship command staff to gain package approvals and manage technical risks.

Required Qualifications & Education
  • Education: Bachelor of Science (BS) in Mechanical Engineering, Marine Engineering, Naval Architecture, or a closely related technical field.
  • Experience: 2-5+ years of professional experience in mechanical design, structural integration, or configuration control, preferably within maritime, aerospace, or defense sectors.
  • CAD & PLM: Strong proficiency in 3D CAD design software (Solid Edge preferred)
  • Configuration Management: Solid understanding of Configuration Management principles (ANSI/EIA-649 standard) and configuration control workflows.
  • Analytical Skills: Basic structural and mechanical calculation skills (e.g., stress analysis, center of gravity, load-bearing capacities, bolt torque).
  • Communication: Excellent verbal and written communication skills to interface effectively with shipyard personnel, design engineers, and Navy officials.
  • Clearance & Citizenship: U.S. Citizenship is required. Ability to obtain and maintain a Department of Defense (DoD) Secret Security Clearance. (Top Secret preferred)
  • Willingness to travel as needed. (Anticipate 2-8 trips per year, with trips ranging from 3-days to 2- weeks in duration.)

Preferred Qualifications
Direct Navy Experience: Prior experience working directly on US Navy surface vessels or submarines.
  • Maritime Standards: Familiarity with US Navy standard procedures, NAVSEA drawing requirements, and TEMPALTs / ShipAlts / Combat System Alts.

  • Navy Military Standards: Knowledge of Navy shock and vibration standards (MIL-S-901D, MIL-STD- 167-1A) and electromagnetic interference controls (MIL-STD-461).
  • CM Certification: Certification in Configuration Management (e.g., NDIA CM, CMPIC, or similar).
  • Practical Integration: Hands-on shipboard mechanical assembly

Physical ability to:
  • Navigate lab, office, and warehouse environments-including frequent movement around piers, docks, and facility spaces-with the ability to stoop, kneel, reach for extended periods, and transport objects weighing up to 75 lbs. across the facility.
  • Use hands to operate machinery, tools, and computer equipment.
  • Climb ladders up to 20 ft and work comfortably in loud production environments, various temperatures, and inclement weather.

SUBSEAMSS
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.
Original Posting:
September 1, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $87,100.00 - $157,450.00
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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About Leidos

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At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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