Test Engineer - Composites

Cambium Biomaterials, Inc.•El Segundo, CA

6d•$81,000 - $132,000•Onsite

About The Position

Defense, aerospace, and other high-performance applications demand new material solutions stronger, lighter, more resilient, tested, and delivered faster than traditionally available. Cambium is disrupting advanced materials development, from AI-driven molecular design to agile domestic manufacturing. Whether enabling hypersonic flight or protecting critical systems, our solutions push the limits of what’s possible. Cambium solves mission-critical problems in defense and industry. Our team of world-class scientists and engineers was purposely built to take on those challenges. Come join us and revolutionize advanced materials for defense, aerospace, and beyond. Cambium is seeking a Test Engineer to join our composite materials team with a focus on ablative materials and carbon-carbon (C/C) composites. You will machine and test high-temperature composites for mechanical and thermal characterization, support polymer infiltration and pyrolysis (PIP) densification and graphitization campaigns, and design and fabricate parts for rapid prototyping technical demonstrations. This will be a hands-on role working with a team of technicians and you will be involved in the entire process—from resin cure through carbonization, densification, and post-test analysis of ablative and thermal protection system (TPS) hardware. We will provide training and mentorship every step of the way. As Cambium experiences rapid growth, the responsibilities of this role are expected to evolve.

Requirements

BS/MS in mechanical, aerospace, or manufacturing engineering, or other technical degree.
1-5+ years of experience in qualification and acceptance testing of composite materials; experience with ablative, carbon-carbon, or other high-temperature/high-char materials strongly preferred
Familiarity with composite fabrication methods such as hand layup, resin transfer molding, press molding, and autoclave cure with strong attention to detail.
Experience creating written instructions for shop floor execution and collaborating with a team of technicians
Have a strong desire to learn and be willing to work in a hands-on environment
Due to the nature of the work, you must have US citizenship
Strong communication skills and team-oriented mindset

Nice To Haves

Familiarity with thermal protection systems (TPS) and ablative materials for high-temperature and re-entry/rocket-nozzle environments
Hands-on experience with carbon-carbon processing, including polymer infiltration and pyrolysis (PIP), carbonization, and graphitization heat treatments, and high-temperature resin systems (phenolic, phthalonitrile, or similar)
Working knowledge of high-temperature and composite test standards (e.g., ASTM C297, D3039, D2344, D6641, E1461) and CMH-17 test methodologies
Proficiency in CAD software
Experience in rapid prototyping of composites, including tooling design and first article builds
Machine shop experience (hand tools, mill/lathe/grinder, and CNC operation) a plus

Responsibilities

Create written instructions, including test plans, standard operating procedures, and specifications, to fabricate and test composite materials, coupons, and parts
Create, maintain, and communicate detailed production plans and schedules
Characterize mechanical and thermal properties of high temperature and ablative composite materials using a load frame and thermal analysis methods
Operate and program composite curing and high-temperature processing equipment such as ovens, autoclaves, presses, and tube/retort furnaces used for pyrolysis, carbonization, and graphitization (up to ~2200°C) of carbon-carbon and ablative materials
Create prototype parts for technology demonstrations starting from conceptual design to part manufacturing
Track and report density, mass change, and property progression across PIP/densification and heat-treatment cycles, and prepare specimens for microscopy, density (Archimedes/pycnometry), and porosity analysis
Support ablative and TPS material screening, including char yield, mass loss, and thermal characterization, and safely handle pyrolysis off-gas and high-temperature furnace operations
Follow all safety protocols and contribute to our culture of safety
Participate in a wide range of R&D problem-solving activities with an open mind and desire to learn
Create and contribute to the product demonstration and engineering teams in a manner consistent with Cambium’s mission and values and the growth of Cambium’s business