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Mechanical Engineer II

CesiumAstro

Job Location:

Westminster, CA - USA

Yearly Salary: USD 96000 - 115000

Posted: 10 October 2026 (Yesterday)

Application Deadline: 7 January 2027

Vacancies: 1 Vacancy

Job Summary

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.

AtCesiumAstro 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.

The Skylark product line is focused on the rapid design build and test ofcutting-edgeactive phased array antennas (AESA) for terrestrial and airborne applications. Current programs span high-power large-scale ground terminals for missile defense to commercial airline and helicopter connectivity solutions.

We are looking to add a Mechanical Design Engineer II to our team. If you enjoy working in a startup environmentand 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 mechanical designs of CesiumAstro products through all phases of the development process. The ideal candidate will be proficient in electronics packaging design mechanical simulations and analyses computer-aided design (CAD) spacecraft mechanical interfaces and environmental qualification of electronic assemblies.

As a CesiumAstro 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 CesiumAstros 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.

The successful candidate will also present engineering design review materials to our customers and leadership team. As such excellent written and verbal communication skills are required.

JOB DUTIES AND RESPONSIBILITIES

Assist with the design and development of mechanical components assemblies structures mechanisms and hardware supporting products and manufacturing activities.
Perform engineering analyses calculations tolerance studies structural evaluations and design trade studies supporting mechanical engineering activities.
Review engineering drawings CAD models specifications and technical documentation while supporting mechanical design decisions.
Perform mechanical testing verification qualification and validation activities supporting engineering and manufacturing objectives.
Analyze engineering data test results inspection findings and manufacturing information to identify trends and recommend solutions.
Support root cause investigations engineering changes corrective actions and design improvement initiatives.
Collaborate with engineering manufacturing quality supply chain and operations teams to support mechanical engineering activities.
Develop engineering drawings 3D models technical reports design documentation bills of materials and engineering change documentation supporting engineering decisions.
Participate in design reviews engineering investigations manufacturing reviews and product development activities.
Maintain engineering documentation design records configuration-controlled technical data and product documentation.
Apply mechanical engineering methodologies engineering standards company procedures and customer requirements throughout product development.
Recommend improvements that enhance product performance manufacturability reliability quality and engineering effectiveness.

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.
Minimum of 2 years of industry experience in design and analysis of electronics packaging including thermal vibration and stress dynamics or in spacecraft structures and mechanisms.
Familiarity with electronics assemblies and experience working closely with electrical engineers.
Experience 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.

$96000 - $115000 a year

CesiumAstro considers several factors when extending an offer including but not limited to the role and associated responsibilities a candidates 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 torace 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 and identifying potential inconsistencies or verification signals in application materials based on available information. 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.

Required Experience:

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