Senior Audio Machine Learning Engineer - Remote Opportunity

About the Role

We are seeking a Senior Audio Machine Learning Engineer to join our innovative team at 9 Mothers. This role offers a unique opportunity to work remotely while contributing to cutting-edge technology designed to intercept and neutralize drone threats. As a Senior Audio Machine Learning Engineer, you will leverage your expertise in machine learning to enhance our systems' capabilities in detecting, classifying, and tracking acoustic targets.

What You'll Do

• Develop hybrid models that integrate beamformed channels and multichannel features to improve detection and classification accuracy.
• Define labeling strategies and build training/evaluation pipelines, implementing hard-negative mining to adapt to diverse outdoor conditions.
• Reduce false alarms caused by environmental factors such as wind and rain across various terrains.
• Deploy machine learning models to edge runtimes, ensuring they meet strict latency requirements while integrating diagnostics for real-time operability.
• Collaborate with hardware and DSP teams to align data, calibration, and performance metrics effectively.

Requirements

• Proven experience in deploying machine learning solutions for audio or similar noisy sensors, with measurable operational metrics.
• Strong engineering rigor, including reproducible experiments and systematic error analysis.
• Practical understanding of microphone array fundamentals to debug failures and design robust tests.
• High proficiency in Python; experience with Rust is a significant advantage.
• Must be a US citizen and able to pass a background check.

Nice to Have

• Experience with on-device inference optimization techniques such as TensorRT and ONNX.
• Familiarity with weak/self-supervised learning and domain adaptation.
• Background in fusion/tracking experience, including temporal models and confidence calibration.
• A passion for building robots as a hobby.

What We Offer

• Meaningful early equity, allowing you to be a foundational owner in the company.
• Direct influence on the product roadmap, shaping technology from day one.
• Work on mission-critical projects that the Department of War actively needs.
• Access to a fully optimized lab for rapid prototyping, equipped with advanced tools.
• 100% employer-paid premiums for medical, dental, and vision insurance.
• Unlimited PTO to ensure you stay sharp and recharge.
• A culture that values high-bandwidth collaboration and rapid field-testing.
• Relocation assistance to help you transition smoothly to Austin, TX.