Prompt Engineer (AI Expert)

👋 About OWN Health

OWN Health is building the world’s first secure AI Health Account — a personalized digital health companion that helps users understand, manage, and improve their well-being. The platform integrates medical data, wearables, biomarkers, nutrition, fitness, and lifestyle into one unified ecosystem to provide preventive, data-driven insights.

We are a Berlin-based health-tech startup backed by leaders from Charité and N26, currently preparing our MVP launch and scaling our AI-powered health agents.

Overview

As a Prompt Engineer at OWN Health, you will design, optimize, and maintain high-performing prompt systems that power our AI health agents — Medical, Nutrition, Fitness, and Lifestyle — and our Master AI Orchestrator.
Your work will bridge the gap between medical semantics, user experience, and AI reasoning.

Key Responsibilities

• Develop and refine prompt architectures for multi-agent health dialogues (context-aware and privacy-safe).
• Collaborate with product, medical, and data teams to ensure clinical accuracy and empathy in AI responses.
• Implement structured prompting frameworks (e.g., role-based, chain-of-thought, multi-agent orchestration).
• Create evaluation loops and test suites to benchmark AI response reliability, personalization, and tone.
• Collaborate with the engineering team to optimize retrieval-augmented generation (RAG) pipelines.
• Maintain prompt libraries, version control, and documentation for scalability.
• Continuously explore the frontier of LLM behavior, token efficiency, and fine-tuned domain prompting.

Ideal Candidate Profile

• 2+ years of hands-on experience designing or optimizing prompts for LLMs (OpenAI, Anthropic, or similar).
• Strong understanding of prompt engineering strategies (few-shot, multi-turn context management, dynamic prompting).
• Background in linguistics, NLP, cognitive science, or AI systems design.
• Interest in healthcare, wellness, and medical data interpretation.
• Familiarity with structured data integration (FHIR, Apple HealthKit, wearable APIs) is a plus.
• Experience with tools such as LangChain, LlamaIndex, OpenAI Function Calling, or custom API wrappers.
• Strong communication and collaboration skills — comfortable working cross-functionally with clinicians and product designers.

You Will Thrive Here If You

• Love combining AI reasoning with human empathy.
• Care deeply about precision, tone, and ethical communication in health contexts.
• Enjoy iterating quickly in a fast-paced, ambitious startup.
• Want your work to directly impact how millions of people understand and prevent disease.

What We Offer

• Early ownership and the opportunity to shape the core intelligence of the OWN AI ecosystem.
• A highly collaborative team with experts in medicine, AI, and product design.
• Competitive compensation (salary or equity options).
• Flexible remote-first work setup.
• A mission-driven culture focused on human health, prevention, and ethical AI.