Principal Mechanical Engineer I
Posted Jul 21, 2026·Open for 4 days (and counting)
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Key details
Function
Engineering
Workplace
On-site
Location
GB
Job Description
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 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 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, helping to cultivate and develop junior engineers on the team.
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.
Audit details(provenance, verification trail, raw fields)
Core fields
Posting ID
cesiumastro:aebd908b-2c42-4621-a42e-afee2d54f856Title
Principal Mechanical Engineer I
Function
Engineering
Location
Cambridge, United Kingdom
Workplace mode
in_person
Posted at
2026-07-21 14:27:02Z
Compensation
undisclosed
Provenance
First seen (our tracker)
2026-07-22 05:10:33Z
Last seen
2026-07-26 05:09:59Z
Last updated
2026-07-26 05:09:59Z
Removed at
still open
Days open
Open for 4 days (and counting)
ATS adapter
lever
ATS slug
CesiumAstroVerification trail
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