# Hardware Engineer

- **Company:** Proto Town
- **Location:** Lockhart, TX, US (On-site)
- **Salary:** Salary not disclosed
- **Contract:** Full-time
- **Posted:** 2026-04-24

## Job description

Proto-Experiments runs ambitious projects. Our current focus is ML-driven crystal growth systems that close the loop between sensors, ML-driven control, and physical hardware. We're looking for a tinkerer whose core strengths are sensors, microcontroller programming, and breadboard-level fabrication . A lot of this role is figuring out how to prototype and build. Materials science or ML background is a plus but not required. Hiring ASAP.
Crystal growth is the immediate project, but Proto-Experiments has other unusual builds in the pipeline. If it is a good fit, there is real opportunity to keep working together on what comes next.
What you'll do
Build the sensing side of our growth rigs: thermocouples, optical sensors, cameras, pressure sensors - selecting them, wiring them cleanly, and getting clean signals out of noisy environments.
Program the microcontrollers running the rigs: sensor sampling, control loops, motor sequencing, and host comms.
Breadboard and prototype-level fabrication: protoboards, harnesses, simple carrier boards, plus 3D-printed brackets and basic mechanical scaffolding.
Power side: heater control, motor drives, PID loops, MOSFETs, isolation, grounding.
Take rigs from "works on the bench" to "runs reliably for a 72-hour growth," and debug across the stack when they don't.
We're looking for
A natural tinkerer - someone who learns quickly, stays deeply curious, works extremely hard, and brings creativity to the bench.
Strong sensor integration experience
Solid microcontroller programming
Real breadboard and prototype-fab skills
Light mechanical fab: basic CAD, 3D printing
You don't need every one of these. We care more about mindset and attitude.
Logistics
Contract : Hours flexible. Hiring ASAP. Potential to convert to full-time.
On-site in Lockhart, TX.
To apply: email jack@earthship.city

[Apply on the company site](https://www.joonow.com/en/job/hardware-engineer-lockhart-tx-q9nzajq80m/apply)