Senior Data Scientist | IA Engine

Job Description

Wellhub is seeking a Senior Data Scientist to join its AI Engine team in Portugal. The successful candidate will contribute to groundbreaking projects in Generative AI, fine-tuning of LLMs, and evaluation of Agentic systems. This role involves shaping the future of AI-powered wellness solutions, enhancing and personalizing the wellness journey for millions of Wellhub subscribers.Role involves:

• Model Development & Fine tuning
• Function Calling & Tool Use
• Prompt Engineering
• Data Preparation
• Evaluation and Testing
• LLM Observability
• Research and Innovation
• Deployment

Requirements:

• Master’s degree or PhD in Computer Science, Data Science, Machine Learning, Statistics, or a related field.
• Proficiency in Python and experience with machine learning frameworks such as PyTorch, TensorFlow, or similar.
• Strong understanding of generative AI architectures, including transformers and attention mechanisms.
• Experience in multi-agent systems and LLMs.
• Strong problem-solving abilities, with a focus on experimental design and data analysis.
• Excellent verbal and written communication skills, with the ability to explain complex technical concepts to non-technical stakeholders.
• Clear scientific thinking and a passion for integration R&D and cutting-edge technology into a product
• Prior experience in Python and SQL are mandatory requirements.

What Wellhub offers:

• Access to Wellhub digital fitness programs and online wellness resources.
• Additional fitness subsidy to access onsite gyms and fitness studios.
• Flexible work options (remote or hybrid).
• Home office stipend and a monthly flexible work allowance.
• Flexible schedule.
• Minimum of 25 days paid holiday per year.
• Paid parental leave.
• Opportunities for personal and career growth.
• Supportive environment.