Staff Mechanical Engineer
This posting asks for U.S. citizenship.
About the role
**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 Staff Mechanical Engineerto 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 be responsible for the mechanical design of CesiumAstro products through all phases of the development process. The ideal candidate will have extensive experience in electronics packaging design, mechanical simulations and analyses, computer-aided design (CAD), spacecraft mechanical interfaces, and environmental qualification of electronic assemblies.
As a staff mechanical team member, you will be responsible for mechanical designs from initial concept design through requirements definition, detailed design, simulation, analysis, manufacturing, testing, qualification, and in-orbit support of CesiumAstro's products. Required skills and experience 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. Principal engineers also serve as technical and professional mentors in their field.
The successful candidate will also present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills are required.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
- A Bachelor of Science (BS) or Master of Science (MS) degree in Mechanical or Aerospace Engineering from an accredited university or institution.
- 8 years of industry experience in design and analysis of electronics packaging, including thermal, vibration, and stress dynamics.
- Demonstrated expertise in packaging high-power and high-density electronic assemblies.
- Strong understanding of thermal management techniques for spaceborne and/or high-power electronics.
- Experience designing hardware for launch and spaceflight environments (or similar).
- Expertise in finite element analysis and thermal simulation tools (Ansys or similar).
- Expert-level proficiency with professional mechanical CAD tools (SolidWorks or similar).
- Experience with precision machining, advanced manufacturing processes, and tolerance analysis.
- Experience with EMI/EMC mitigation techniques.
- Strong understanding of GD&T and aerospace drawing practices.
- Excellent written and verbal communication skills.
PREFERRED EXPERIENCE
- Experience packaging digital, power or RF printed circuit board assemblies.
- Experience with spacecraft payloads, avionics, or power systems.
- Knowledge of NASA, DoD, ESA, or commercial space qualification standards.
- Experience with thermal vacuum testing and spacecraft environmental qualification.
- Familiarity with materials selection for radiation and outgassing environments.
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.
Copied from the listing CesiumAstro published, verified 30 Oct 2026.
The application
Your details and CV, then 9 questions (1 written).
- 1.As a result of the work performed by CesiumAstro, all eligible candidates must be a U.S. Person or able to obtain an export license. U.S. Persons include U.S. Citizens, Permanent Residents, conditional residents, asylees, and refugees. AreYes or no
- 2.Do you now or will you in the future require sponsorship for employment visa status? Please select "Yes" if you will require the Company to commence ("sponsor") an immigration or work permit case in order to employ you, either now or at somYes or no
- 3.Do you have a family member that is currently employed with CesiumAstro?Yes or no
- 4.If yes, please specify the individual(s) and the department or location in which they work:Short answer · optional
- 5.Please indicate the highest level of education you have completed.Pick one (7 options)
- 6.Please select which of the following security clearances and/or access you currently hold.Pick any (8 options)
- 7.By submitting your application you hereby certify that the facts set forth in the above employment application are true and complete to the best of your knowledge. I certify that the information on this application is accurate and completePick any: Yes, I have read the Applicant Authorization and Certification and I acknowledge and agree with the terms stated above.
- 8.I have applied for employment with CesiumAstro, Inc. (the “Company”). In consideration of the Company's accepting and evaluating my application for employment, I hereby agree that I will comply with and be legally bound by the following terPick any: I agree with the above obligations related to protection of Proprietary Information.
- 9.If yes, please specify the individual(s) and the department or location in which they work:Written answer · optional
Taken from the application form CesiumAstro runs, verified 30 Oct 2026.
How to apply to CesiumAstro: the questions its forms ask across its open roles.
About CesiumAstro
Software-defined radios, phased-array payloads and satcom terminals for space and defense.
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