About Relling Systems Relling Systems (YC S25) builds ready-to-deploy AI robot workcells for US manufacturers. We design and test in San Francisco and put systems to work on factory floors. This role is in person in Potrero Hill, San Francisco. What you'll do • Build software that connects perception, planning and control on real robot hardware. • Write tests, diagnostic tools and logs that make intermittent failures easier to reproduce. • Work through sensor and runtime issues with the engineers bringing up each cell. What we're looking for • Strong programming fundamentals in Python or C++, with a project you can explain end to end. • Comfort debugging across software and hardware interfaces. • ROS/ROS 2, computer vision or robot motion projects are useful; a specific middleware background is not required. How to apply Apply with your resume and a short description of something you built. Project links are optional. Tell us what you owned, what failed and how you tested the fix. Coursework, student teams and personal projects count.