Mechanical Engineer I

CesiumAstro
CesiumAstro

Other Engineering

Austin, TX, USA

Posted on Jun 5, 2026
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 Mechanical Engineer I to our team. If you enjoy working in a startup environment and are passionate about developing leading-edge hardware for satellites, spacecraft, and aerospace systems, we would like to hear from you.

In this position, you will support mechanical designs of Cesium products through all phases of the development process. The candidate may be involved with electronics packaging design, mechanical simulations and analyses, computer-aided design (CAD), spacecraft mechanical interfaces, and environmental qualification of electronic assemblies.

As a Cesium mechanical team member, you may be responsible for mechanical designs from initial concept design through requirements definition, detailed design, simulation, analysis, manufacturing, testing, qualification, and in-orbit support of Cesium's products. The ideal candidate will have skills and experience that include thermal management design, precision machining principles, thermal simulation and analysis, shock and vibration simulation and analysis, electromagnetic interference/compatibility (EMI/EMC) mitigation techniques, geometric dimensioning and tolerancing (GD&T), finite element analysis (FEA), and cost analysis to develop, validate, and optimize mechanical designs.

The successful candidate may also present engineering design review materials. As such, excellent written and verbal communication skills are required.

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

  • Bachelor of Science (BS) and minimum of 1 year of industry experience in design and analysis.
  • Strong understanding of mechanical engineering principles.
  • Strong analytical, troubleshooting, and problem-solving skills.
  • Experience with CAD tools such as SolidWorks, CATIA, Creo, or AutoCAD.
  • Practical understanding of DFM/DFMA implications of material and process selection.
  • Knowledge of GD&T, drafting standards, and engineering documentation practices.
  • Experience with Engineering analysis tools such as (ANSYS, MATLAB, or similar).
  • Experience with CNC manufacturing.
  • Excellent written and verbal communication skills.

PREFERRED EXPERIENCE

  • Familiarity with electronics assemblies and experience working with electrical engineers.
  • Aerospace industry internships or experiences.
  • Electronics packaging, including thermal, vibration, and stress dynamics, or in spacecraft structures and mechanisms.
  • Exposure to EMI/EMC mitigation techniques.
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.
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