Mechanical Engineer I, Thermal Control Systems

Vast • Long Beach, CA

4h • $85,000 - $108,000 • Onsite

About The Position

At Vast, our mission is to contribute to a future where billions of people are living and thriving in space. Vast is developing next-generation space stations to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. Using an incremental, hardware-rich and low-cost approach, Vast is rapidly developing its multi-module Haven Station. Haven Demo’s 2025 success made Vast the only operational commercial space station company to fly and operate its own spacecraft. Next, Haven-1 is expected to become the world’s first commercial space station when it launches, followed by additional Haven modules to enable permanent human presence by 2030. Our team is all-in, committed to executing our mission safely and on time. If you want to work with the most talented people on Earth furthering space exploration for humanity, come join us.
Vast is looking for a Mechanical Engineer, Thermal Control Systems reporting to the Manager, Thermal Control Hardware, to support the development of the systems that will be required for the design and build of artificial-gravity human-rated space stations.
The TCS team is seen as the cardiovascular system for the space station, and is the first team to put hands on hardware learning to interface test and validate the performance of these components and assemblies. The team will be getting hands-on operating experience with the integrated vehicle, helping to turn on the flight systems for the first time and learning how to operate a space vehicle. Along the way they will be developing advanced pneumatic, hydraulic, and AVI hardware complimented by system automations and data review tools.
This will be a full-time, exempt position located in our Long Beach location.

Requirements

• Bachelor's, in Mechanical, Aerospace, or similar field, completed or expected by June 2026
• Ability to work full-time onsite in Long Beach, CA
• Experience working with fluid systems or components.
• 1+ years of academic and/or internship experience working hands-on hardware experience performing fabrication, assembly and/or testing.

Nice To Haves

• Demonstrated ability to own hardware or systems within an integrated engineering team outside a classroom setting.
• Hands-on hardware experience performing fabrication, assembly and/or testing.
• Proactive problem-solving skills such as failure analysis, root cause investigation, and design of experiment creation.
• Ability to perform trade studies using first principles and engineering fundamentals to make clear recommendations even with partial information.
• Experience with rotating machinery.
• Experienced in NX.
• Solid understanding and application of geometric dimensioning and tolerancing (GD&T) and tolerance stack-up analysis.
• Experience with structural analysis methods (hand calcs, FEMAP, ANSYS) in order to optimize hardware to strength requirements as well as to evaluate for life and fracture.
• Knowledge of metallic and fluid system manufacturing techniques, processes, equipment, and other processes such as machining, welding, brazing, tube bending, etc.
• Able to work well in an integrated collaborative team environment, including frequent interactions with technicians, other engineers, and managers.
• Highly self-motivated with strong organizational and written/oral communication skills – able to prioritize and execute tasks in a high-pressure environment with the ongoing drive for continuous improvement in all aspects of work.

Responsibilities

• Own the design and development of thermal control system and components (i.e. heat exchangers, cold plates, heaters, heat pipes, etc.) for our artificial-gravity space station, from initial design trades to fully functional and validated system.
• Iterate on manufacturing processes and development testing in a fast-paced environment.
• Own the project delivery timeline from early design through production, launch, and orbit insertion.
• Perform systems engineering tasks and fluid analyses.
• Lead design reviews internally and externally with suppliers and customers.
• Work with interdisciplinary stakeholders to ensure the component will integrate with the necessary avionics, software, and mission operations systems.
• Make sure that all designs are manufacturable and reliable.
• Bring technical excellence to everything you do.

Benefits

• 100% medical, dental, and vision coverage for employees and dependents, generous paid time off; up to 20+ days of vacation for exempt staff and up to 10+ days of vacation for non-exempt staff with the ability to cash-out unused vacation annually, paid parental leave, short and long-term disability insurance, life insurance, access to a 401(k) retirement plan, ClassPass credits, personalized mental healthcare through Spring Health, and other discounts and perks.
• We also take pride in offering exceptional food perks, with snacks, drip coffee & onsite barista, cold drinks, and dinner meals remaining free of charge, and lunch subsidized as part of Vast’s ongoing commitment to providing high-quality meals for employees.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level