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CesiumAstro

Designs satellite communications hardware and software

Staff Propulsion Engineer

Materials & StructuresConfirmed live in the last 24 hours
Full-timeEl Segundo, CA, USAIn-person

About the Job

Requirements

  • A bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related field.
  • At least 8 years of industry experience in aerospace design and analysis.
  • Expertise in Ansys Mechanical, Explicit Dynamics (LS-Dyna), Linear and Nonlinear Eigenvalue Buckling, Harmonic Response, and Random Vibrations.
  • Proficiency in MATLAB for programming, data analysis, and optimization.
  • Proficiency in CAD tools including SolidWorks and NX.
  • A strong foundation in systems engineering principles, requirements flowdown, and integration.
  • Hands-on experience with hardware development, testing, and qualification.
  • Strong analytical and problem-solving skills with close attention to detail.
  • Excellent written and verbal communication skills.

Responsibilities

  • Lead the design, analysis, and development of primary and secondary launch vehicle structures, stage interfaces, and payload accommodations.
  • Perform static and transient structural and thermal analysis of launch vehicle components and systems to ensure mechanical integrity under operational loads.
  • Develop and execute test programs, analyze experimental data, and apply findings to optimize designs.
  • Prepare CAD models for FEA analysis and manufacturing.
  • Generate technical documentation, including reports, specifications, and contributions to PDRs and CDRs.
  • Collaborate across mechanical, aerospace, and controls engineering teams to deliver flight-ready systems.
  • Mentor junior and senior engineers to build technical understanding and professional development.
  • Participate in mission operations, anomaly investigations, and continuous improvement initiatives.

Desired Qualifications

  • Prior experience with cryogenic systems, liquid rocket systems, and launch vehicle components.
  • Hands-on experience designing and improving launch vehicle hardware.
  • Knowledge of manufacturing and technological processes for aerospace parts.
  • Familiarity with aerospace safety and reliability practices.
  • Experience in a start-up or rapid development environment.

About the Company

CesiumAstro

Designs satellite communications hardware and software

CesiumAstro builds end-to-end space and airborne communications systems, combining hardware and software to connect satellites, UAVs, and ground stations. Its products include active phased array antennas, software-defined radios, and complete RF payloads that enable electronically steered links for inter-satellite communication, high-rate downlinks, lunar communications, and 5G/NTN networks. The company ships plug-and-play, commercially manufactured, full-stack systems designed to be flexible and cost-efficient, rather than bespoke one-off solutions. Its goal is to make space-based connectivity more accessible and adaptable across space, air, and ground networks for both government and commercial customers.

Company size
501-1,000
Company stage
Debt Financing
Total funding
$1.6B
Headquarters
Bee Cave, TX
Founded
2017

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