Combustion Devices Engineer II

CesiumAstro; El Segundo (CA); On-site; USD 108,000 - 129,900; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

Disability insurance

Retirement plans

Company stock options

Job summary

CesiumAstro in El Segundo is seeking a Combustion Devices Engineer II to design and develop various combustion devices for rocket systems. You will work through the full hardware lifecycle, collaborating with multi-disciplinary teams to deliver flight-ready solutions.

The ideal candidate has a Bachelor's degree in Mechanical or Aerospace Engineering and significant experience in mechanical design and CAD tools. Generous benefits, including health and retirement plans, are included.

Qualifications

• 2+ years of experience with mechanical design, development, fabrication, assembly, or testing.
• Strong proficiency in CAD tools to model complex geometries.
• Familiarity with aerospace safety and reliability practices.

Responsibilities

• Design and develop combustion devices including rocket engine components.
• Create and document schematics and manufacturing processes.
• Collaborate with teams to deliver flight-ready hardware.

Skills

Mechanical design

Development

Fabrication

CAD tools

Communication

Education

Bachelor’s degree in Mechanical Engineering or Aerospace Engineering

Tools

Siemens NX

SolidWorks

ANSYS

MATLAB

Job description

Note on U.S. Government Space Technology Export Regulations

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At CesiumAstro, we are developers and pioneers of out‑of‑the‑box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross‑functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands‑on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward‑thinking individuals to join our team.

We are looking to add a Combustion Devices Engineer II to our team. In this role, you will work across the full hardware lifecycle from early concepts and CAD models through manufacturing, test execution, and design iteration.

Job Duties and Responsibilities

• Design and develop a variety of combustion devices of liquid rocket engine, combustion chambers, pre‑burners, igniters. Create models and drawings of parts and assemblies. Perform calculations and analyses with team support.
• Create schematics and document processes.
• Own requirements definition, architecture trades, and system‑level integration for assigned subsystems.
• Work with manufacturing team to create finished engine parts. Support parts through 3d‑printing, machining, post processing, and inspection. Incorporate feedback to improve design for manufacturing.
• Develop and execute test programs, analyze experimental data, and apply findings to optimize designs.
• Collaborate across mechanical, aerospace, and controls engineering teams to deliver flight‑ready hardware.

Job Requirements and Minimum Qualifications

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or a related field.
• 2+ years of experience with mechanical design, development, fabrication, assembly, or test (internships included).
• Strong proficiency in CAD tools (Siemens NX, SolidWorks) – the ability to model complex three‑dimensional geometry of the combustion chamber cooling channel.
• Familiarity with aerospace safety and reliability practices.
• Excellent written and verbal communication skills.
• Ability to work as a teammate and independently to achieve ambitious goals.

Preferred Experience

• Prior experience designing of liquid rocket engine, combustion chambers, pre‑burners, igniters or other rocket systems.
• Practical experience in test bench setup and performance diagnostics.
• Hands‑on engineering (Full‑stack: computer to wrench to broom).
• Geometric dimensioning and tolerancing (GD&T).
• Experience in a start‑up or rapid development environment.
• Experience with tools such as ANSYS and MATLAB.

$108,000 - $129,900 a year

CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full‑time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.

CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.