Member of Technical Staff, Thermal Systems

Threeum

Threeum is a frontier company building physical AI. We design the model and the machine as one system, so the full loop of training, deployment, and improvement runs faster, more capable, and more autonomous. Our goal is to make frontier AI physical, and to make it widely accessible.

The Role

We are looking for a thermal engineer for a machine that runs at ambient temperature without industrial cooling, where holding tight thermal stability is core to the machine working at all.

Some example areas you might work on (not limited to):

• Design passive and low-power thermal systems for sealed, quiet enclosures
• Hit sub-degree stability requirements and prove them on the bench
• Build the thermal models the simulation and control stacks consume

If you want to build the machines the models deserve, we would love to hear from you.

We offer a base salary of $180,000 to $320,000 USD and a meaningful equity grant, depending on experience and background, along with competitive benefits.