Robotics Engineer, Staff

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• Role: Engineering / Full stack
• Experience: 6+ years
• Visa: US citizen/visa only

Location: Onsite — Austin, TX

Employment Type: Full‑Time

Job Title: Lead Robotics Engineer

Company Overview

9 Mothers Defense develops AI-enabled systems to counter unmanned aerial threats. Our first product, EDDA, is an autonomous counter-sUAS point-defense platform designed to detect, track, and neutralize Group 1 drone threats. The company is headquartered in Austin, Texas.

Position Summary

9 Mothers is seeking a Robotics Lead to own the control systems and motion engineering for our counter-sUAS platform. The Robotics Lead is responsible for the design, implementation, and tuning of the high-bandwidth control loops and state estimation that enable EDDA to track and engage small, fast-moving aerial targets with precision. This is a senior individual contributor position focused on control theory.

Essential Duties

• Design, implement, and tune the control stack for EDDA's motion system, including actuators and gimbaled subsystems.

• Develop and maintain high-bandwidth control loops, including PID, feedforward, and model-predictive control as appropriate to the application.

• Develop and maintain state estimation pipelines that fuse inertial measurement unit data, encoder feedback, and perception output into a consistent target track.

• Characterize and model mechanical nonlinearities — including backlash, cogging, stiction, inertia, and structural modes — and develop compensation strategies.