About Relling: Relling (YC S25) builds ready-to-deploy robot workcells for US manufacturers. We design and test in San Francisco and put systems to work on factory floors. This is a full-time, in-person role in Potrero Hill, San Francisco.
What you'll do: Design, build and wire control panels for robotic workcells, from schematics and panel layout through wiring, labeling and documentation. Select and integrate power distribution, motor drives and servo amplifiers, PLCs, safety relays and controllers, sensors, I/O and industrial networks such as EtherCAT and EtherNet/IP. Design wiring harnesses and cable routing for robots and end-of-arm tooling, and design and bring up custom PCBs where off-the-shelf parts fall short. Commission cells on the factory floor, troubleshoot electrical faults under real production conditions, and make sure every system is safe, serviceable and built to code.
What we're looking for: Hands-on experience designing and building electrical systems you can explain end to end, such as control panels, harnesses, power electronics or PCBs. Strong fundamentals in circuits, power, grounding and shielding, and comfort with schematic and layout tools (e.g. EPLAN, AutoCAD Electrical, KiCad or Altium). Familiarity with industrial standards and machine safety (NFPA 79, UL 508A, safety-rated circuits) is a strong plus. A practical approach to debugging: measurements, root causes and validation.
How to apply: Apply with your resume and a short description of an electrical system you built or shipped. Project links are optional. Tell us what you owned, what failed and how you tested the fix.
Skills Required
- Hands-on experience designing and building electrical systems such as control panels, wiring harnesses, power electronics, or PCBs
- Strong fundamentals in circuits, power, grounding, and shielding
- Comfort with schematic and electrical layout tools such as EPLAN, AutoCAD Electrical, KiCad, or Altium
- Practical electrical debugging using measurements, root-cause analysis, and validation
- Familiarity with industrial standards and machine safety, including NFPA 79, UL 508A, and safety-rated circuits
What We Do
Relling builds and deploys turnkey, AI-native robot workcells for American manufacturers, targeting high-mix, contact-rich production tasks that conventional automation struggles to handle. Its systems automate assembly, machine tending, finishing, kitting, welding, and inspection—work that classical automation cannot economically handle. Cells are scoped and qualified off-site, then run on US factory floors in weeks, bringing physical AI into practical manufacturing operations.
