AI/Machine Learning Engineer

Citizen Health•San Francisco, CA

9h•Hybrid

About The Position

Citizen Health was founded on the belief — shaped by firsthand lived experiences navigating healthcare — that having the right advocate is the single most important factor in achieving better care and outcomes. By uniquely combining data, AI, and community, Citizen is building a personalized AI advocate powered by patients' complete medical histories and data from thousands of other patients to generate personalized insights for clinical decisions and day-to-day challenges. Starting in rare and complex conditions, patients share their data in exchange for value, enabling biopharma and researchers with seamless access to patients and regulatory-grade data, shaving years off drug development for much-needed treatments. Citizen is founded by experienced entrepreneurs with multiple successes under their belts and is funded by top-tier investors including 8VC, Transformation Capital, and Headline Ventures, among others. We are a mission-driven team excited to be building the future of consumer healthcare. The Role Citizen Health is seeking AI/Machine Learning Engineers to lead the development and deployment of cutting-edge AI solutions that power our patient-centric platform. This role is crucial in designing and implementing sophisticated machine learning models that transform complex health data into actionable insights for patients, healthcare providers, and researchers. As a key technical leader, you'll be at the forefront of applying advanced machine learning techniques to solve challenging problems in rare disease research and patient care. Your work will be instrumental in developing AI-driven solutions that improve disease understanding, treatment recommendations, and patient outcomes.

Requirements

5+ years of experience in machine learning engineering, with a focus on production ML systems
Strong proficiency in Python and AI/LLM frameworks (LangChain, LangGraph, AutoGen, CrewAI)
Experience designing and implementing production-grade ML pipelines
Proven track record of deploying ML/LLM solutions in production environments
Strong understanding of ML fundamentals, including deep learning, NLP, and statistical modeling
Experience with ML ops tools and best practices
Proficiency in working with large-scale datasets and distributed computing
Strong software engineering skills and coding best practices
Degree in Computer Science or equivalent degree

Nice To Haves

Hands-on experience integrating and optimizing Large Language Models (LLMs) in production environments
Proficiency with LLM tools and techniques such as LangChain, LlamaIndex, Prompt Engineering
Experience implementing Retrieval-Augmented Generation (RAG) systems
Familiarity with vector databases and efficient similarity search techniques for AI applications
Experience with message queuing systems and data streaming platforms
Familiarity with data processing and analytics technologies
Proven track record of high-quality coding and architectural design
Passion for creating robust, scalable, AI-driven systems that make a real-world impact in healthcare

Responsibilities

Design and implement end-to-end machine learning solutions, from data preprocessing to model deployment and monitoring
Develop and optimize agentic Large Language Models (LLMs) solutions for healthcare applications using techniques like fine-tuning and Retrieval-Augmented Generation (RAG)
Create robust data pipelines for validation, and deployment
Implement ML systems that can effectively process and analyze diverse healthcare data types, including structured clinical data, medical imaging, and unstructured text
Collaborate with backend engineers to integrate ML models into our production infrastructure
Ensure ML systems meet strict healthcare compliance requirements while maintaining high performance
Design and implement monitoring systems for model performance, data drift, and system health
Lead research initiatives to explore and implement state-of-the-art AI/ML techniques
Collaborate with clinical experts to validate model outputs and ensure medical accuracy
Stay current with the latest developments in AI/ML, particularly in healthcare applications