Spacecraft Thermal Engineer — Radiator Design & Flight Hardware

Telemetry Today LLC; Redwood City, Northern (CA, KY); Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

Health, dental, and vision coverage

401(k) with company match

Commuter benefits

Job summary

Array Labs seeks a Thermal Engineer to own the cooling architecture of radar satellites and payloads, driving design decisions with in-house thermal tools. You will collaborate with RF, electrical, and mechanical engineers to ensure on-orbit performance and reliability.

The role emphasizes hands-on testing, design iteration, and full-system thermal verification. The position requires a degree in mechanical/aerospace engineering, at least 3 years of experience in thermally constrained hardware,

Qualifications

• Bachelor's degree in Mechanical or Aerospace Engineering, Physics, or STEM field.
• 3+ years of industry experience fielding hardware in thermally-constrained products.
• Strong Python coding proficiency and experience developing or extending engineering analysis tools.
• Hands-on experience building, instrumenting, and testing thermal hardware.
• Strong grounding in heat transfer fundamentals.
• Excellent teamwork and communication skills.
• Ability to work in a fast-paced, iterative design environment.

Responsibilities

• Define spacecraft and payload thermal architecture, including radiator sizing and conduction paths from high-power RF components to space.
• Own, extend, and validate Array's in-house Python thermal simulation framework, and use it to drive design decisions
• Support board- and component-level thermal design with electrical and RF engineers, including junction temperature and derating analysis.
• Design, build, and test thermal hardware: radiators, interface materials, coatings, MLI, heaters, and sensor instrumentation.
• Plan and execute thermal vacuum and thermal balance test campaigns, and correlate models against test and flight telemetry.
• Develop thermal requirements, interface control documentation, and verification plans with systems engineering.

Skills

Python programming

Thermal analysis

Heat transfer fundamentals

Hardware testing

Team collaboration

RF integration

Education

Bachelor's degree in Mechanical or Aerospace Engineering

Tools

Thermal Desktop

SINDA/FLUINT

ANSYS

Python

Job description

Array Labs seeks a Thermal Engineer to own the cooling architecture of radar satellites and payloads, driving design decisions with in-house thermal tools. You will collaborate with RF, electrical, and mechanical engineers to ensure on-orbit performance and reliability.

The role emphasizes hands-on testing, design iteration, and full-system thermal verification. The position requires a degree in mechanical/aerospace engineering, at least 3 years of experience in thermally constrained hardware,