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CesiumAstro creates out-of-the-box communication systems for space and airborne platforms.
The Role
Lead mechanical design from concept through in-orbit support for spacecraft hardware. Responsibilities include electronics packaging, thermal and structural simulation/analysis, CAD/FEA design, manufacturing coordination, environmental qualification, EMI/EMC mitigation, cost analysis, and mentoring. Present designs to customers and executives and contribute to proposals.
Summary Generated by Built In
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 Principal Mechanical Design Engineer II (2026137) to our team. If you are great at what you do, 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 Cesium 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 principal 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 Cesium'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
- Bachelor of Science (BS) or Master of Science (MS) degree in Mechanical or Aerospace Engineering from an accredited university or institution.
- 11 years of industry experience in design and analysis of electronics packaging, including thermal, vibration, and stress dynamics, or 9 years of experience with a Master's degree.
- Expertise in aerospace industry design, development, and qualification.
- Expert-level proficiency with electronics assemblies and experience working closely with electrical engineers.
- Expert-level proficiency with professional mechanical and FEA CAD tools, such as Solidworks Simulation.
- Experience with CNC manufacturing.
- Experience with EMI/EMC mitigation techniques.
- Excellent written and verbal communication skills.
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.
Skills Required
- Bachelor's or Master's degree in Mechanical or Aerospace Engineering
- 11 years industry experience in design and analysis of electronics packaging (or 9 years with a Master's degree)
- Expertise in aerospace industry design, development, and qualification
- Expert-level proficiency with electronics assemblies and close collaboration with electrical engineers
- Expert-level proficiency with professional mechanical and FEA CAD tools (e.g., SolidWorks Simulation)
- Experience with thermal management design and thermal simulation/analysis
- Experience with shock and vibration simulation and analysis
- Experience with CNC manufacturing and precision machining principles
- Experience with EMI/EMC mitigation techniques
- Knowledge of geometric dimensioning and tolerancing (GD&T)
- Experience with environmental qualification of electronic assemblies and spacecraft mechanical interfaces
- Finite element analysis (FEA) and cost analysis experience
- Excellent written and verbal communication skills (presentation and proposal support)
CesiumAstro Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about CesiumAstro and has not been reviewed or approved by CesiumAstro.
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Healthcare Strength — Health coverage includes medical, dental, vision, life and disability insurance, plus FSAs and mental health benefits. Feedback suggests the health package is comprehensive for a growth-stage aerospace firm.
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Retirement Support — Offerings include a 401(k) with company matching and other retirement-plan elements. Feedback suggests core retirement mechanisms are in place alongside standard financial benefits.
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Leave & Time Off Breadth — Generous PTO, paid holidays, paid sick days, and bereavement leave are included. Feedback suggests time-off options are broad on paper across multiple leave types.
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The Company
What We Do
We build high-throughput, plug-and-play phased array communication payloads for space and airborne platforms. CesiumAstro’s full-stack, multi-mission hardware and software products enable a diverse range of commercial and defense objectives. Full-system engineering design is at the heart of every CesiumAstro product. We deliver high-performance solutions under rapid development timelines.
Why Work With Us
At CesiumAstro, we’re a team. We’re passionate, respectful, and determined colleagues ready to help at a moment’s notice. We’re mentors excited to enable our peers with the knowledge they need to succeed. Together, we’re visionaries committing to building memories that will last a lifetime.
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