Principal Mechanical Engineer I

CesiumAstro; Cambridge; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Pension contributions

Income protection

Life insurance

Employee assistance program

Generous vacation and sick leave

Modern working environment

Job summary

CesiumAstro in Cambridge seeks a Principal Mechanical Design Engineer I to advance hardware for satellites and aerospace systems, leading design from concept to qualification.

You will mentor junior engineers, collaborate with electrical teams on PCBAs and CCAs, perform thermal analyses, EMI/EMC mitigation, and contribute to proposals and customer reviews.

Qualifications

• BS or MS in Mechanical or Aerospace Engineering from an accredited university.
• 9+ years in electronics packaging design and analysis including thermal, vibration and stress simulations.
• Experience with aerospace space industry design, development and qualification.
• Experience collaborating with electrical engineers on PCBAs/CCAs.
• Proficiency with CAD/FEA tools (SolidWorks & Ansys).
• Experience with CNC manufacturing.
• EMI/EMC mitigation experience.
• Excellent written and verbal communication skills.

Responsibilities

• Mechanical design of Cesium products through all development phases.
• From concept through requirements, detailed design, simulation, testing, qualification, and in-orbit support.
• Thermal management design, TD analyses, and cost optimization.
• Mentor junior engineers and present design reviews to customers and executives.
• Contribute to proposals and customer discussions.
• Maintain clear written and verbal communication throughout projects.

Skills

Electronics packaging design

Thermal, vibration & stress analysis

PCBAs/CCAs collaboration

Mentoring

Excellent communication

Education

Bachelor's or Master's in Mechanical or Aerospace Engineering

Tools

SolidWorks

Ansys

Job description

At Beijing-based company 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 cross‑functional work environment allowing learning and engagement across the organization. If you desire 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.

Principal Mechanical Design Engineer I

We are looking for a Principal Mechanical Design Engineer I to join our team. If you thrive 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.

Key Responsibilities

• Mechanical design of Cesium products through all phases of the development process.
• Responsible for mechanical designs from initial concept through requirements definition, detailed design, simulation, analysis, manufacturing, testing, qualification and in‑orbit support of Cesium's products.
• Thermal management design, precision machining principles, thermal simulation and analysis, shock and vibration simulation and analysis, EMI/EMC mitigation techniques, GD&T, FEA, and cost analysis to develop, validate and optimise mechanical designs.
• Serve as technical and professional mentor to junior engineers.
• Present engineering design review materials to customers and executive team and participate in proposal‑writing efforts.
• Provide excellent written and verbal communication skills.

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.
• At least 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 collaborating closely with electrical engineers on 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

• Equal‑opportunity employer offering competitive salaries and great benefits including competitive employer pension contributions, company‑provided income protection and life insurance cover, employee assistance program, generous vacation and sick leave.
• Tremendous scope for personal growth and professional development in a high‑growth company.
• A highly talented, passionate, international team changing the space industry.
• Modern working environment.

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.

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.