About Knowtex

Knowtex is building the future of voice AI operating systems for clinicians, transforming how healthcare documentation happens at the point of care. Founded by Stanford AI scientists with deep clinical experience, we're experiencing explosive growth across both commercial health systems and federal healthcare, with our ambient documentation platform scaling rapidly to thousands of clinicians across hundreds of specialties. We're at an inflection point where cutting-edge AI meets real clinical impact, giving clinicians hours back each day to focus on what matters most - their patients.

Position Overview

We are seeking an ML Scientist (Research) to advance Knowtex's voice AI and clinical NLP capabilities at the frontier of healthcare AI. This role focuses on developing and evaluating novel machine learning approaches for medical speech recognition, clinical language understanding, and agentic AI systems tailored for healthcare environments.

You will work on research-driven initiatives that directly impact our ambient documentation platform, collaborating closely with applied ML and engineering teams to transition validated research into scalable production systems. This role reports to the CTO and plays a central part in defining the next generation of clinical AI infrastructure.

Key Responsibilities

• Develop and optimize models for medical speech recognition across 200+ specialties
• Research and implement clinical NLP pipelines for automated E&M coding and ICD-10 classification
• Design and evaluate note quality scoring systems using LLMs and structured clinical rubrics
• Create specialty-specific language models (e.g., gastroenterology, dermatology, emerging markets)
• Design and prototype agentic AI systems for clinical decision support and documentation assistance
• Optimize models for real-time inference with sub-200ms latency requirements
• Build rigorous evaluation frameworks for clinical accuracy, MDM validation, and MIPS quality measure compliance
• Collaborate with clinical experts to validate outputs and ensure alignment with regulatory and documentation standards
• Transition research findings into production-ready solutions in partnership with applied ML and platform engineering teams

Required Qualifications

• 5+ years of experience in machine learning research or ML engineering with a focus on NLP and/or speech recognition
• Strong expertise in PyTorch or TensorFlow
• Deep experience with transformer architectures and large language models
• Proven ability to design and build production-grade ML pipelines at scale
• Strong understanding of model optimization techniques (quantization, distillation, pruning)
• Experience working with cloud ML platforms (AWS SageMaker, GCP Vertex AI, or equivalent)
• Master's or PhD in Computer Science, Machine Learning, or related field

Preferred Qualifications

• Experience in healthcare AI or clinical NLP
• Familiarity with medical terminology and clinical documentation workflows
• Experience with speech recognition systems (Whisper, Conformer architectures, etc.)
• Knowledge of medical coding systems (CPT, ICD-10, SNOMED)
• Publications in leading ML/NLP conferences
• Experience deploying models in regulated environments (e.g., GovCloud, HIPAA-compliant systems)

Technical Environment

• Python, PyTorch, TensorFlow
• Transformer-based LLM architectures
• Triton Inference Server (AWS GovCloud deployments)
• AWS (SageMaker, EKS, S3, Lambda)
• Real-time inference systems with strict latency constraints