Job Details

At Thorne, we work to deliver high-quality, science-backed solutions to empower individuals to take a proactive approach to their well-being. Each day begins with a mission to help others discover and achieve their best health. We count on our teammembers to challenge and push the boundaries to make that happen. At Thorne, you'll be joining a team of more than 750 passionate individuals committed to our cause of providing superior health solutions at every age and life stage.

Position Summary: The Principal Engineer focuses on AI/ML innovation and model development to lead next-generation personalization and data-driven wellness initiatives. This role bridges science, data, and engineering to drive the rapid prototyping and productionization of advanced AI and machine learning solutions. The Principal Engineer is a hands-on innovator passionate about transforming early research models into production-grade systems that deliver measurable value.

This is a remote position.

Responsibilities

• Provides technical leadership across various application types, architectures, and software-development methodologies, offering strategic direction, and design leadership on complex engineering challenges.
• Collaborates with Science, Data, and Product teams to prototype and validate AI/ML models using Python, FastAPI, and modern orchestration frameworks.
• Leads efforts to productionize machine learning prototypes, ensuring scalability, reproducibility, and performance.
• Designs and deploys ML pipelines and inference services using TensorFlow, PyTorch, Scikit-learn, or XGBoost.
• Develops and optimizes agentic LLM pipelines, RAG workflows, and semantic search using OpenSearch, Bedrock, and other vector databases.
• Partners closely with IT and DevOps to operationalize innovation in a secure and compliant manner.
• Integrates LLM and generative AI APIs (OpenAI, Bedrock, Anthropic, etc.) into production systems.
• Mentors junior engineers and data scientists on best practices in experimentation, deployment, and observability.
• Actively participates in required training, development programs, and electives as suit one's needs, and supports colleagues, trainers, and management as appropriate with these efforts.
• Promotes the Company's Mission and Values, including an accountable, innovative, and results-oriented culture that promotes customer service, openness, teamwork, mutual trust, and respect.

What You Need

• 7+ years of software or ML engineering experience, with 2+ years in production AI/ML deployment. Bachelor's degree in CS, Engineering, Mathematics, or related field. Advanced degree (MS/PhD) preferred but not required.
• Advanced Python skills, including FastAPI, async microservices, and ML infrastructure development.
• Hands-on experience with AWS AI/ML services (Bedrock, ECS, Lambda, OpenSearch, CloudWatch).
• Deep understanding of vector databases, retrieval architectures, and embedding pipelines.
• Strong MLOps experience (CI/CD, model registry, reproducibility, automated deployment).
• Background in health tech, wellness, or regulated environments (DSHEA, HIPAA) is a plus
• Develops and delivers on assigned objectives within requested timeframes.
• Works cooperatively with executives and senior managers in other departments.
• Possesses good interpersonal skills engages others in a positive manner.
• Possesses strong attention to detail.
• Possesses strong verbal and written communication skills.
• Raises issues and concerns promptly.
• Documents and presents work in a clear and concise manner.
• Works independently with minimal direction and oversight.

What We Offer

• Competitive compensation
• 100% company-paid medical, dental, and vision insurance coverage for employees
• Company-paid short- and long-term disability insurance
• Company- paid life insurance
• 401k plan with employer matching contributions up to 4%
• Gym membership reimbursement
• Monthly allowance of Thorne supplements
• Paid time off, volunteer time off and holiday leave
• Training, professional development, and career growth opportunities

Thorne is the leader in science-backed health and wellness solutions committed to helping individuals live healthier longer. As the top recommended clinical brand by healthcare practitioners, Thorne offers a comprehensive range of products including nutritional supplements and health tests designed to meet the unique needs of individuals at every stage of life. Founded in 1984, Thorne products are formulated with the highest-quality ingredients, supported by clinical research, and rigorously tested to ensure purity, potency, and efficacy. Thorne is trusted by 47,000+ health-care professionals, thousands of professional athletes, more than 100 professional sports teams, multiple U.S. National Teams, and more than five million consumers. For more information, visit Thorne.com.

THORNE IS AN EQUAL OPPORTUNITY EMPLOYER