PHASTAR is seeking a Principal Data Scientist to take on a combined project leadership and hands-on technical role. You will be instrumental in developing LLM-powered automation tools designed to transform clinical reporting and document generation workflows.
What You'll Do
- Develop LLM-powered automation tools for clinical reporting and document generation workflows.
- Build AI-driven code generation pipelines and quality assessment frameworks.
- Design and implement human-in-the-loop review workflows with feedback loops to continuously improve output quality.
- Design and build multi-agent systems for data workflows — agents that retrieve, generate, validate, and iterate autonomously.
- Implement agent orchestration using frameworks such as Google ADK, LangGraph, or LangChain.
- Deploy and manage agents on Google Vertex AI.
- Use AI coding tools (e.g., Gemini CLI, GitHub Copilot) as a core part of your development workflow.
- Critically review and validate AI-generated code — understanding what it produces, why, and when it’s wrong.
- Write effective prompts to direct AI tools toward correct, secure, well-structured output.
- Know when to use AI and when to write code manually.
What We're Looking For
- Strong Python skills.
- Hands-on experience building RAG systems or LLM-powered applications using frameworks like LangChain or LlamaIndex.
- Experience integrating LLM APIs (Google Gemini, OpenAI, or similar), primarily through Google Vertex AI.
- Working knowledge of vector databases such as ChromaDB, Weaviate, Qdrant, or Pinecone.
- Experience with Docker and containerized deployments.
- Comfortable using AI-assisted development tools like Gemini CLI or GitHub Copilot — and skilled at critically evaluating their output.
Technical Stack
- Languages & Frameworks: Python, LangChain, LlamaIndex, Google ADK, LangGraph
- Platforms & APIs: Google Gemini API, OpenAI API, Google Vertex AI
- Data & Infrastructure: ChromaDB, Weaviate, Qdrant, Pinecone, Docker
- Tools: Gemini CLI, GitHub Copilot
Work Mode
This is a remote position open to candidates based in the UK or EU.
Phastar is committed to the principles and practices of equal opportunities and to encouraging the establishment of a diverse workforce. It is our policy to employ individuals on the basis of their suitability for the work to be performed and their potential for development, regardless of age, sex, race, color, nationality, ethnic or national origin, disability, marital status, pregnancy or maternity, sexual orientation, gender reassignment, religion, or belief.
