Skip to content

Senior Machine Learning Engineer

Builds and deploys production ML models for real-time voice AI agents, fine-tuning LLMs and audio models, running benchmarks and human evaluations, and maintaining ML infrastructure for high-scale performance.

225k – 325kRedwood City, CAML EngineeringOnsite

About the role

Key Responsibilities

  • Train & Tune Models – Fine-tune LLMs and audio models to maximize speed, accuracy, and production-readiness—pushing the frontier of real-time AI voice experiences.
  • Benchmark & Evaluate – Build datasets, define rigorous metrics, and measure model performance across high-impact voice AI tasks to guide development.
  • Deploy to Production – Work closely with engineering to ship models, monitor them in the wild, and ensure they stay fast, reliable, and accurate at scale.
  • Run Human Evaluations – Build scalable pipelines to collect structured human feedback, benchmark subjective quality, and inform model iterations.
  • Level Up Infrastructure – Design and maintain the ML infrastructure needed for fast experimentation, robust training, and continuous deployment.

Qualifications

  • ML Engineer with Real-World Experience – You’ve trained and shipped models in production. Bonus if you’ve worked with LLMs or audio models.
  • Fluent in Modern ML Stack – You know your way around Python, PyTorch, and today’s ML tools—from training pipelines to evaluation benchmarks.
  • Execution-Oriented – You move fast, take ownership, and focus on solving real problems over perfect ones.
  • Startup-Ready – You’re adaptable, resilient, and energized by ambiguity and fast-changing priorities.
  • Clear Communicator & Team Player – You collaborate well across functions and push decisions forward.

Compensation

Cash: $225,000 - $325,000 base salary
Equity: Offers Equity

Skills

PyTorchPythonLLMsAudio ModelsMachine LearningModel TrainingModel EvaluationMl PipelinesHuman EvaluationML Infrastructure

Similar roles

ML Engineering jobs

Senior AI Engineer

Build and optimize AI agent orchestration and reasoning systems for the insurance industry. Requires 6+ years in ML/AI, strong Python skills, and exceptional LLM prompting ability.

225k – 325kSan Francisco, CAML EngineeringOn-site6+ YOERftEvals

Senior Research Engineer - Voleon Securities

Builds and optimizes ML research infrastructure, deploys models to production for market-making strategies, and mentors engineers. Requires 5+ years backend experience, Python proficiency, and ML frameworks like PyTorch/Jax.

225k – 310kNew York, NY +1ML EngineeringHybrid5+ YOEGoJAX

Senior Data Scientist, Generative AI

Develops and deploys scalable generative AI/ML models for entertainment data products, owning end-to-end lifecycle from data sourcing to production monitoring. Requires 5+ years experience, MS/PhD, deep LLM expertise, Python/PyTorch proficiency, and AWS deployment skills.

225k – 240kNew York, NYML EngineeringHybrid5+ YOEAWSRAG

Senior Software Engineer, AI Platform

Senior Software Engineer building scalable AI infrastructure, agent orchestration frameworks, evaluation systems, and high-performance LLM serving at Mixpanel. Requires 5+ years experience and hands-on LLM/agent work.

226k – 306kSan Francisco, CAML EngineeringHybrid5+ YOELLMsMLOps

Senior Machine Learning Engineer - 3D Sensor Simulation

Develops and optimizes ML-driven 3D sensor simulations (cameras, lidar, radar) using GenAI and graphics techniques to generate high-fidelity synthetic data for AV training. Requires 5+ years experience with neural rendering (NeRFs, Gaussian Splatting), PyTorch/TensorFlow, Python/C++, and 3D math.

227k – 316kSeattle, WAML EngineeringHybrid5+ YOEC++Nerfs