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Temporary Prototype Build Engineer Jobs in Monrovia, CA

Hermeus

Build Engineer

Los Angeles, CA · On-site

$91K - $140K/yr

Drive the transition from prototype to production for complex aerospace assemblies. * Ruthlessly ... Build Engineer II $114,750 - $140,250 The salary range listed for this role is intended as a ...

Hermeus

Build Engineer

Los Angeles, CA

$91K - $140K/yr

Drive the transition from prototype to production for complex aerospace assemblies. * Ruthlessly ... Build Engineer II $114,750 - $140,250 The salary range listed for this role is intended as a ...

Hermeus

Build Engineer

Los Angeles, CA

$91K - $140K/yr

Drive the transition from prototype to production for complex aerospace assemblies. * Ruthlessly ... Build Engineer II $114,750 - $140,250 The salary range listed for this role is intended as a ...

Hermeus

Build Engineer - Propulsion

Los Angeles, CA

$91K - $187K/yr

Drive the transition from prototype to production for complex aerospace assemblies. * Ruthlessly ... Strong engineering first principles. * Bachelor's degree in mechanical, aerospace, manufacturing ...

Hermeus

Build Engineer - Propulsion

Los Angeles, CA

$91K - $187K/yr

Drive the transition from prototype to production for complex aerospace assemblies. * Ruthlessly ... Strong engineering first principles. * Bachelor's degree in mechanical, aerospace, manufacturing ...

Hermeus

Build Engineer - Propulsion

Los Angeles, CA · On-site

$91K - $187K/yr

Drive the transition from prototype to production for complex aerospace assemblies. * Ruthlessly ... Strong engineering first principles. * Bachelor's degree in mechanical, aerospace, manufacturing ...

Hermeus

Tooling Engineer

Los Angeles, CA · On-site

$138K - $187K/yr

... art of rapid iterative prototyping to build the fastest aircraft in the world today. By ... A Tooling Build Engineer on the Manufacturing team is responsible for the design, development, and ...

Hermeus Corporation

Tooling Engineer

Los Angeles, CA · On-site

$138.55 - $187.45/hr

... art of rapid iterative prototyping to build the fastest aircraft in the world today. By ... A Tooling Build Engineer on the Manufacturing team is responsible for the design, development, and ...

Hermeus

Tooling Engineer

Los Angeles, CA

$138K - $187K/yr

... art of rapid iterative prototyping to build the fastest aircraft in the world today. By ... A Tooling Build Engineer on the Manufacturing team is responsible for the design, development, and ...

Hermeus

Tooling Engineer

Los Angeles, CA

$138K - $187K/yr

... art of rapid iterative prototyping to build the fastest aircraft in the world today. By ... A Tooling Build Engineer on the Manufacturing team is responsible for the design, development, and ...

Multicoin

Build Engineer, Capabilities

Los Angeles, CA · On-site

$85 - $110/hr

The Role We are seeking a Manufacturing (Build) Engineer to support both early‑stage and ... Experience transitioning products from prototype to scalable volume manufacturing. * Background in ...

Clutch Canada

Build Engineer - Propulsion

Los Angeles, CA · On-site

$80 - $120/hr

Drive the transition from prototype to production for complex aerospace assemblies. * Ruthlessly ... Design and implement full-stack build processes--factory layout, tooling, test flow, and vehicle ...

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Temporary Prototype Build Engineer information

See Monrovia, CA salary details

$30

$38

$41

How much do temporary prototype build engineer jobs pay per hour?

As of Aug 25, 2026, the average hourly pay for temporary prototype build engineer in Monrovia, CA is $38.68, according to ZipRecruiter salary data. Most workers in this role earn between $36.44 and $40.77 per hour, depending on experience, location, and employer.

What is the difference between Temporary Prototype Build Engineer vs Mechanical Prototype Technician?

AspectTemporary Prototype Build EngineerMechanical Prototype Technician
CredentialsRelevant engineering or technical certifications, degree preferredTechnical diploma or certification in mechanical technology
Work EnvironmentManufacturing labs, R&D facilities, production linesPrototype workshops, testing labs, manufacturing settings
Employer & IndustryAutomotive, aerospace, consumer electronics companiesProduct development, engineering firms, manufacturing companies
Common Search IntentDesigning, building, and testing prototypes in a temporary capacityAssembling and troubleshooting mechanical prototypes

The Temporary Prototype Build Engineer focuses on assembling and testing prototypes temporarily, often requiring engineering knowledge and certifications. In contrast, the Mechanical Prototype Technician specializes in hands-on mechanical assembly and troubleshooting. Both roles are essential in product development but differ mainly in scope, responsibilities, and required credentials.

What are popular job titles related to Temporary Prototype Build Engineer jobs in Monrovia, CA?

For Temporary Prototype Build Engineer jobs in Monrovia, CA, the most frequently searched job titles are:

What cities near Monrovia, CA are hiring for Temporary Prototype Build Engineer jobs?

Cities near Monrovia, CA with the most Temporary Prototype Build Engineer job openings:

Temporary Prototype Build Engineer jobs near you
Infographic showing various Temporary Prototype Build Engineer job openings in Monrovia, CA as of August 2026, with employment types broken down into 84% Full Time, and 16% Part Time. Highlights an 100% In-person job distribution, with an average salary of $80,450 per year, or $38.7 per hour.

Prototype Tooling Engineer - Rapid Build & Test

Clutch Canada

Los Angeles, CA • On-site

$80 - $100/hr

Other

Medical, Retirement, PTO

Posted 6 days ago

Job description

Hermeus is a high-speed aircraft manufacturer focused on the rapid design, build, and test of high-Mach and hypersonic aircraft for the national interest. Working directly with the Department of Defense, Hermeus delivers capabilities that will ensure that our nation, and our allies, maintain an asymmetric advantage over any and all potential adversaries.
A Tooling Build Engineer on the Manufacturing team is responsible for the design, development, and validation of innovative tooling, fixtures, and ground support equipment that enable the prototyping, integration, and testing of advanced structural assemblies. This role emphasizes creativity, rapid iteration, and collaboration with multidisciplinary teams to support early-stage research and development.
Responsibilities
  • Own the design, fabrication, and implementation of advanced tooling, fixtures, and integration aids to support R&D, prototype builds, and test campaigns.
  • Partner with structures, manufacturing, and test teams to define tooling requirements, integration flow, and process interfaces.
  • Collaborate across engineering disciplines and external vendors to deliver rapid, high-precision prototype tooling solutions.
  • Leverage advanced materials and manufacturing methods, including additive and composite fabrication, to enhance performance and efficiency.
  • Perform design validations, mechanical checks, and hands-on trials to qualify tooling for development and production use.
  • Drive continuous improvement by developing and implementing tooling upgrades that reduce build time, improve accuracy, and streamline operations.
  • Maintain documentation, configuration control, and safety standards across all tooling systems.
  • Coordinate schedule, priorities, and vendor relationships to ensure tooling deliverables align with critical R&D and integration milestones.
  • Act as a key interface between engineering and build teams to resolve integration challenges and sustain build velocity.
Requirements
  • Strong engineering first principles.
  • Bachelor's degree in mechanical, aerospace, manufacturing, or related engineering field.
  • Hands-on experience with physical hardware (internships, labs, project teams all count).
  • Proven ability to design, build, break, and iterate quickly.
  • Comfort with CAD, test equipment, hand tools.
  • Familiarity with manufacturing processes (machining, welding, forming, etc.) and GD&T fundamentals.
Preferred Skills and Experience
  • Hands-on experience with prototype fabrication methods including machining, additive manufacturing, composites, and rapid prototyping.
  • Proficiency in CAD software (e.g., CATIA, SolidWorks, NX) for tooling design and iteration.
  • Knowledge of GD&T and ability to interpret and apply engineering drawings to prototype development.
  • Familiarity with R&D environments and early-stage design-build-test cycles for high-performance aerospace systems.
  • Strong problem-solving skills, with the ability to experiment, adapt, and iterate quickly in ambiguous development settings.
  • Excellent communication skills with the ability to collaborate across engineering, prototype build, and test teams.
  • Knowledge of lean prototyping and continuous improvement principles in low-volume, experimental environments.
U.S. EXPORT CONTROL COMPLIANCE STATUS
The person hired will have access to information and items subject to U.S. export controls, and therefore, must either be a “U.S. person” as defined by 22 C.F.R. § 120.62 or otherwise eligible for deemed export licensing. US persons include U.S. citizens, U.S. nationals, lawful permanent residents (green card holders), and asylees and refugees with such status granted, not pending.
EQUAL OPPORTUNITY
Hermeus is an Equal Opportunity Employer. Employment decisions at Hermeus are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.

138550 - 187450 USD a year

The salary information provided is a general guideline only. Hermeus takes various factors into account, including, but not limited to, the position's scope and responsibilities, the candidate's professional background, education and training, essential skills, and market and business considerations, when presenting a job offer.
Salary is only one part of our total compensation and benefits package. Hermeus offers competitive salary and equity, unlimited PTO policy, paid parental leave, potential for year-end bonuses, and more!
100% employer-paid health care
401k & Retirement Plans
Unlimited PTO
Weekly Paid Office Lunches
End of Year Bonuses
Fully stocked breakrooms
Stock Options
Paid Parental Leave
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