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Engineering

Principal Mechanical Engineer I

CesiumAstroCambridge, United KingdomFull-timeSalary not listed · Typical pay in United KingdomPosted Nov 5, 2026

CesiumAstro is hiring for the position of Principal Mechanical Engineer I in Cambridge, United Kingdom. It is listed as a full-time, staff/principal-level position.

Written by Dev Global Jobs

DGJ summary of this job

Our own short read of this listing, built only from the facts it gives. The employer’s original text follows further down.

CesiumAstro is hiring for the position of Principal Mechanical Engineer I in Cambridge, United Kingdom. It is listed as a full-time, staff/principal-level position.

Reading the advert, the employer asks for 9+ years of experience.

Skills and tools named in the text include SolidWorks and CAD.

No salary is given in this listing, so check the official pay figures in the DGJ Insight section below where they exist.

Benefits mentioned in the advert: pension or retirement plan and learning budget.

The advert does not mention visa sponsorship. If you would move to United Kingdom for this job, check the official work permit route first (DGJ Insight lists it where we have it).

Dev Global Jobs found this job on Arbeitnow on Nov 5, 2026.

Employer
CesiumAstro
Location
Cambridge, United Kingdom
Job type
Full-time
Level (from the title)
staff/principal-level
Pay
Not stated by the employer
Experience asked
9+ years
Found
Nov 5, 2026 on Arbeitnow
Employer text
599 words, about 3 min to read
Skills named in the advert
SolidWorksCAD
Before you apply
  • Apply only on the official page (arbeitnow.co.uk). Dev Global Jobs is not the employer and never asks for a fee.
  • Compare your own experience with the 9+ years the advert asks for, and show it clearly near the top of your CV.
  • Mirror the skills the advert names (SolidWorks and CAD) in your CV where you really have them; applicant tracking systems look for these words.
  • Read the employer’s full text below (about 3 min) before you apply.
  • Build or check your CV with the free DGJ CV Builder.
Only on Dev Global Jobs

DGJ Insight

Our own data about this role and place, from official statistics and our live job index.

Updated Nov 6, 2026
Pay benchmark
Average wage, United Kingdom
GBP 46,511 average / year

Source: OECD Average annual wages, 2025

Cost of living · United Kingdom
100.5 vs New York = 100

UN living-cost index for United Kingdom (ICSC post adjustment 76.4), as of 1 Oct 2026.

Source: ICSC post adjustment classifications (icsc.un.org)

Work permit route
  • Skilled Worker visa: Job offer from a licensed sponsor at the required skill and salary level; English requirement
  • Health and Care Worker visa: Eligible health and social care roles with a licensed sponsor
  • Global Talent visa: Endorsement as a leader or potential leader in a listed field

Official routes: UK Visas and Immigration (GOV.UK)

Job description

About the role

Full text from the employer, as published on Arbeitnow, arranged into sections. Nothing added or removed.

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. 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.
  • 9 years of industry experience in design and analysis of electronics packaging, including thermal, vibration, and stress dynamics hand calculations and simulations.
  • Expertise in aerospace and space industry design, development, and qualification.
  • Expert-level proficiency with electronics assemblies and experience working closely with electrical engineers on printed circuit board assemblies (PCBAs, CCAs).
  • Expert-level proficiency with professional mechanical CAD (SolidWorks preferred) and FEA tools (Ansys preferred)
  • Experience with CNC manufacturing.
  • Experience with EMI/EMC mitigation techniques.
  • Excellent written and verbal communication skills.
  • Benefits:
  • CesiumAstro is an equal opportunity employer offering competitive salaries and great benefits including competitive employer pension contributions, company-provided income protection and life insurance cover, an employee assistance program, and generous vacation and sick leave.
  • Tremendous scope for personal growth and professional development in a high-growth company.
  • A highly talented, passionate, international team that is changing the space industry.
  • Modern working environment.
  • 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. Please be aware that many roles will be subject to both security and export control restrictions. These restrictions mean that factors including new starter’s nationality, any previous or dual nationalities held, place of birth and country of residence may limit those roles that you can perform for the organisation. 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 not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

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