ML Ops Infrastructure Engineer

COMPANY OVERVIEW

The company is bringing the world’s most natural interface, voice, to the technology we use every day. Our speech models and real-time infrastructure power AI systems that keep up with the way people actually speak. More than 5,000 organizations run conversational voice AI on the company in production, including Twilio, Cloudflare, Sierra, Decagon, Vapi, Cresta, Granola, and Jack in the Box.

The company Voice Agent Platform brings together speech-to-text, text-to-speech and speech-to-speech, with voice-native foundation models available through cloud APIs or self-hosted and on-premises deployments. Built for accuracy, low latency and cost efficiency, the company makes high-quality voice experiences practical to build and run at scale. More than 650,000 developers have used the company to process more than 200,000 years of audio. Every day, more of the world’s conversations with AI run on our models.

AI-FIRST BY DEFAULT

At the company, we expect an AI-first mindset—AI use and comfort aren’t optional, they’re core to how we operate, innovate, and measure performance.

Every team member who works at the company is expected to actively use and experiment with advanced AI tools, and even build your own into your everyday work. We measure how effectively AI is applied to deliver results, and consistent, creative use of the latest AI capabilities is key to success here. Candidates should be comfortable adopting new models and modes quickly, integrating AI into their workflows, and continuously pushing the boundaries of what these technologies can do.

Additionally, we move at the pace of AI. Change is rapid, and you can expect your day-to-day work to evolve just as quickly. If you’re energized by experimenting, adapting, and learning constantly, you’ll thrive here. Expect your day-to-day to evolve as fast as the technology does.

THE OPPORTUNITY

Getting a model from a research notebook to a production API serving millions of requests is one of the hardest problems in AI. As an ML Ops Infrastructure Engineer at the company, you will own the critical bridge between research and production -- building the pipelines, deployment systems, and testing infrastructure that take models from experimental to battle-tested at scale. Your work ensures that every model improvement our research team makes can be safely, quickly, and reliably delivered to the customers who depend on the company's APIs for real-time voice AI.

WHAT YOU'LL DO

• Design and build CI/CD pipelines specifically tailored for ML model development, validation, and deployment

• Architect and maintain model deployment pipelines that move models from research environments through staging to production with confidence

• Build A/B testing infrastructure that enables controlled rollouts of new models and measures real-world performance impact

• Implement comprehensive monitoring for model performance in production -- accuracy metrics, latency, drift detection, and regression alerts

• Develop automated retraining pipelines that trigger on data changes, performance degradation, or scheduled cadences

• Create and maintain build and test environments that mirror production, giving researchers high-fidelity feedback before deployment

• Establish model versioning, artifact management, and rollback capabilities to ensure safe and reproducible deployments

• Collaborate with research engineers to define and enforce model quality gates before production promotion

• Build observability dashboards that give the team real-time insight into model health across all environments

• Optimize model serving infrastructure for latency, throughput, and cost efficiency

YOU'LL LOVE THIS ROLE IF YOU

• Are excited by the challenge of operationalizing cutting-edge AI models at production scale

• Believe that great infrastructure is what turns research breakthroughs into customer value

• Enjoy designing systems that are automated, reliable, and self-healing

• Want to work on problems where minutes of latency reduction or percentage points of accuracy matter enormously

• Like collaborating across research and engineering teams to make the whole organization faster

• Are motivated by building the deployment and testing systems that back a platform serving over 200,000 developers

IT'S IMPORTANT TO US THAT YOU HAVE

• 4+ years of experience in MLOps, DevOps, or infrastructure engineering with a focus on ML systems

• Strong proficiency in Python and experience building automation and tooling for ML workflows

• Deep experience with CI/CD systems and building pipelines for software and model delivery

• Hands-on experience with Docker and Kubernetes for containerized workload management

• Practical experience deploying and serving ML models in production environments

• Familiarity with model evaluation, validation, and quality assurance processes

• Understanding of monitoring and observability principles as applied to ML systems

• Strong problem-solving skills and a bias toward automation over manual processes

IT WOULD BE GREAT IF YOU HAD

• Experience with model serving frameworks such as NVIDIA Triton Inference Server, TensorRT, or ONNX Runtime

• Background in speech, audio, or real-time media ML systems

• Experience with Infrastructure as Code tools such as Terraform or Pulumi

• Hands-on experience with monitoring and observability stacks (Prometheus, Grafana, Datadog, or similar)

• Familiarity with GPU-accelerated inference optimization and profiling

• Experience with feature stores, data versioning, or ML metadata management

• Knowledge of canary deployment strategies and progressive delivery for ML models

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