Mechatronics Engineer
Relling
Mechatronics Engineer
Relling
Multi-modal AI for video-based perception
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: Build, test and improve mechanical and electromechanical systems for robotic workcells. Work across mechanical, electrical and software interfaces during cell bring-up. Diagnose failures under load, test fixes and document what works.
What we're looking for: Experience building and testing physical systems, with clear ownership you can explain end to end. Strong mechanical and electromechanical fundamentals and sound engineering judgment. A practical approach to debugging: calculations, measurements, root causes and validation.
How to apply: Apply with your resume and a short description of a system you built or shipped. Project links are optional. Tell us what you owned, what failed and how you tested the fix.
Relling develops AI models trained on raw video and multiple sensory signals (video, depth, IMU, audio, force, gaze) to understand and interact with the real world. The models learn from high-fidelity measurements rather than just text or images, enabling them to measure events directly and cope with challenges like blur and occlusion, especially in 3D scenes. Unlike typical text/image-based AI, Relling uses a broader sensor suite to train systems that perceive 3D structure and physical events, improving reliability in dynamic environments and defense-focused applications. The goal is to defend critical infrastructure by delivering AI that can reliably perceive, predict, and act in the real world, bridging digital intelligence with physical reality.
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