Full-Time

Mechanical Build Engineer

Updated on 9/3/2026

AMCA

AMCA

51-200 employees

Aerospace/defense product development and prototyping

Compensation Overview

$100k - $130k/yr

No H1B Sponsorship

El Segundo, CA, USA

In Person

Travel to vendors and other company sites may be required as needed.

Bachelor's, Master's

Category
Manufacturing & Process Engineering (1)
Required Skills
Python
MATLAB
Assembly

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Requirements
  • A bachelor's or advanced degree in aerospace engineering, manufacturing engineering, materials engineering, mechanical engineering, or engineering physics.
  • At least 1 year of engineering experience in manufacturing, design, test, or development; internship and project team experience is applicable.
  • Strong understanding of engineering first principles, specifically thermodynamics, fluid dynamics, and solid mechanics.
  • The ability to work flexible hours and provide occasional weekend support as needed.
  • U.S. person status under the International Traffic in Arms Regulations, including U.S. citizenship, U.S. permanent residence, or protected-person status.
Responsibilities
  • Develop build methodology from industry standards and conduct research and development to improve component manufacturing processes and unlock new methods.
  • Oversee assembly and manufacturing procedures for new and existing hardware.
  • Own design-for-manufacturability changes to part drawings and change drawings as required to eliminate repeat failures.
  • Conduct development campaigns for new manufacturing methods and write manufacturing-best-practice specifications based on real-world data for design engineers.
  • Evaluate purchasing commercial build and manufacturing capabilities against designing and developing capabilities in-house.
  • Own various manufacturing methods and advise design engineers on machine operation and part optimization.
  • Develop and implement tooling to enable high-quality builds of company hardware.
  • Identify, plan, and execute capital equipment, machine, and layout upgrades.
  • Partner with engineering and production teams to generate ideas, designs, and improvements for current and next-generation vehicles.
  • Assist design engineers in guiding new designs from concepts to qualified, production-capable aerospace components.
  • Prototype new components at the in-house research and development laboratory and participate closely in prototype development.
  • Travel to vendors and other company sites as needed.
Desired Qualifications
  • At least 2 years of professional experience in aerospace or mechanical engineering.
  • At least 2 years of experience with geometric dimensioning and tolerancing concepts.
  • Experience building and testing fluid or electrical systems.
  • Experience building and testing pneumatic, hydraulic, and structural assemblies.
  • Experience with scientific computing languages such as Python or MATLAB.
  • Experience with Siemens NX or a similar computer-aided design package.
  • Experience with design-for-manufacturability improvement projects.
  • Strong project management skills and the ability to communicate technical concepts across multidisciplinary teams.
  • Strong interpersonal and collaborative skills and enthusiasm for problem solving and optimizing aerospace production and design processes.

AMCA operates in the aerospace and defense sector by acquiring and developing key products to meet industry needs. It builds unified engineering and manufacturing processes to speed up capabilities and increase production volumes, while prioritizing quality and safety with a strong customer focus. The company’s model centers on scaling acquired products and creating new ones to respond to evolving market demands, enabling rapid prototyping and fast delivery to clients in the aerospace supply chain. Its goal is to expand and improve product offerings to meet the changing needs of the aerospace and defense markets, delivering reliable solutions with attention to safety and performance.

Company Size

51-200

Company Stage

Series B

Total Funding

$376.5M

Headquarters

El Segundo, California

Founded

2024

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Simplify Jobs

Simplify's Take

What believers are saying

  • Amca raised $300 million in May 2026 at a $1 billion valuation.
  • The company keeps acquiring suppliers, including BC Systems, Electrocube, Cal-Draulics, and Payne Magnetics.
  • Its F-35 deployment and 67% faster deliveries prove demand for faster qualification now.

What critics are saying

  • Executing six factory integrations after the May 2026 Series B strains quality and uptime.
  • Customer concentration on primes and classified programs makes one program loss immediately painful.
  • If RAPID fails AS9100, qualification, or defense delivery promises, the thesis collapses.

What makes AMCA unique

  • RAPID compresses component timelines 67% and spans design, qualification, and manufacturing.
  • Amca now runs six factories and 123,000 square feet across California, Iowa, and New York.
  • It sells into Boeing, Lockheed Martin, Northrop Grumman, Airbus, Honeywell, and Raytheon.

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Benefits

Flexible Work Hours

Health Insurance

401(k) Retirement Plan

Remote Work Options

Paid Vacation

Paid Sick Leave

Paid Holidays

Hybrid Work Options

Wellness Program

Mental Health Support

Phone/Internet Stipend

Home Office Stipend

Professional Development Budget

Conference Attendance Budget

Stock Options

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

-12%

1 year growth

-3%

2 year growth

-19%
Silicon Legal Strategy
Jun 2nd, 2026
SLS client Caffeinated Capital leads Amca's $300MM Series B.

SLS client Caffeinated Capital leads Amca's $300MM Series B. June 2, 2026 Silicon Legal represented Caffeinated Capital as they led Amca's $300 million Series B. Amca is building America's new industrial base, increasing competition and capacity for critical aerospace and defense components. In addition to Caffeinated Capital, the round included investments from Lightspeed Venture Partners, Andreessen Horowitz, Lux Capital, Construct Capital, and House Capital.

Defense Daily
May 20th, 2026
Amca raises $300 million to bolster aerospace and defense supply chain.

Amca raises $300 million to bolster aerospace and defense supply chain. Wednesday, May 20th, 2026 Amca, a startup founded 18 months ago to accelerate product development, qualification and delivery, and strengthen the aerospace and defense supply chain, has raised $300 million in a new funding round to expand use of its technology platform, acquire and build new factories, and deliver the products it is manufacturing faster, the company said on Wednesday. The Series B round was led by Caffeinated Capital, which also led Amca's $76 million Series A round a year ago. Since its founding,... Not a subscriber or registered user yet? Please contact us at [email protected] or call us at 888-707-5814 (Monday - Thursday 9:00 a.m. - 5:30 p.m. and Friday 9:00 a.m. - 3:00 p.m. ET.), to start a free trial, get pricing information, order a reprint, or post an article link on your website.

PR Newswire
May 20th, 2026
Amca raises $300M Series B at $1B+ valuation to strengthen US defence supply chain

Amca, an aerospace and defence manufacturer, has raised $300 million in a Series B round led by Caffeinated Capital, achieving a valuation exceeding $1 billion just 18 months after its founding. Lightspeed Venture Partners joined the round, alongside existing investors including Andreessen Horowitz and Lux Capital. The El Segundo-based company operates six factories across California, Iowa and New York, totalling over 123,000 square feet of production capacity for critical components including hydraulics, avionics and power electronics. Amca supplies Boeing, Lockheed Martin, Northrop Grumman, Airbus and other major customers. The company has developed RAPID, an AI-powered platform that integrates design, testing and manufacturing, reducing production timelines by 67% compared to industry standards. The funding will expand RAPID deployment and support additional factory acquisitions nationwide.

PR Newswire
Feb 19th, 2026
Amca acquires Payne Magnetics, strengthening its power electronics capabilities

/PRNewswire/ -- Amca, a Los Angeles-based aerospace and defense company, has acquired Payne Magnetics of Covina, California from its second-generation owner,...

PR Newswire
Feb 12th, 2026
Amca acquires Electrocube, a premier Boeing supplier, to expand into power electronics

/PRNewswire/ -- Amca, an El Segundo-based aerospace and defense company, has acquired Electrocube of Pomona, California from two of its founding families. The...