Senior Data Scientist

Freelance Senior Data Scientist

For one of our leading clients, we are searching for a senior Data Scientist to support the design and development of next‑generation AI‑ready services within the medicinal chemistry and healthcare domain. The role focuses on transforming complex APIs into intelligent, agent‑driven systems that enable advanced data retrieval and decision‑making.

Key Responsibilities & Deliverables:

• Design and develop AI‑ready services (e.g. MCPs, tools, skills) on top of medicinal chemistry and healthcare APIs.
• Implement agentic workflows to resolve ambiguity and orchestrate accurate, multi‑step data retrieval and processing.
• Optimize and refine LLM prompts to improve performance, reliability, and output quality.
• Build and maintain evaluation pipelines for training, testing, and benchmarking AI systems.
• Integrate and orchestrate REST‑based APIs within AI‑driven architectures.
• Collaborate closely with engineers, domain experts, and stakeholders to deliver production‑ready AI solutions.

Required Skills & Competencies:

• Proven hands‑on experience with LLM prompt engineering and optimization.
• Practical experience working with agentic frameworks (observability tools are a strong plus).
• Strong understanding of data science workflows, including experimentation and model evaluation.
• Solid experience integrating and working with HTTP‑based REST APIs.
• Strong analytical and communication skills, with the ability to work in cross‑functional teams.

Contract Details:

• Start date: ASAP
• Duration: 6 months
• Contract: Freelance
• Location: 1 day per week in Amsterdam