Senior Data Scientist | AI Engine

Wellhub (formerly Gympass); Napoli; Remoto; EUR 55.000 - 85.000; Tempo pieno

Descrizione del lavoro

A leading company is looking for a Senior Data Scientist to join their AI Engine team, focusing on developing innovative Generative AI solutions. You'll collaborate with engineers to enhance wellness journeys for millions, impacting how AI transforms health and fitness. This role requires an advanced degree and expertise in technology for effective solutions.

Servizi

Access to digital fitness and wellness resources, free Gold plan

Subsidy for onsite gyms and studios

Hybrid and remote options, home office stipend

Flexible working hours based on personal and business needs

Minimum 25 days holiday plus additional days

100% paid parental leave

Opportunities for personal and professional development

Supportive, high-growth environment

Competenze

• Strong understanding of generative AI architectures.
• Experience with multi-agent systems and LLMs.
• Passion for integrating R&D and cutting-edge technology into products.

Mansioni

• Model development and fine-tuning of LLMs.
• Design structured function calling mechanisms within LLMs.
• Develop frameworks to assess AI performance.

Conoscenze

Problem-solving

Data Analysis

Communication

Generative AI Understanding

Formazione

Master’s degree or PhD in related fields

Strumenti

Python

PyTorch

TensorFlow

Descrizione del lavoro

At Wellhub (formerly Gympass) (Permanent), in Lisbon, Portugal

Expires at : 2025-12-09

Remote policy : Full remote

We are hiring a Senior Data Scientist for our AI Engine team in Portugal!

We seek a talented and motivated Data Scientist to join our team in Brazil / Portugal, contributing to groundbreaking projects in Generative AI. You will help shape the future of AI-powered wellness solutions by leveraging Generative AI, fine-tuning LLMs, and evaluating Agentic systems.

As a Data Scientist in the CARE team, you will develop cutting-edge Agentic AI to enhance and personalize the wellness journey for millions of Wellhub subscribers. Your work will directly impact AI's role in wellness, making it more adaptive and transformative. You will collaborate with engineers and domain experts to create innovative AI applications and solve real-world problems.

YOUR IMPACT

1. Model Development & Fine-tuning: Understanding deep learning techniques, transformers, attention mechanisms, and fine-tuning LLMs using techniques like LoRA, QLoRA.
2. Function Calling & Tool Use: Design structured function calling mechanisms within LLMs for dynamic API, database, and RAG pipeline interactions.
3. Prompt Engineering: Craft instructions, create reusable templates, and test against edge cases.
4. Data Preparation: Preprocess, analyze, and curate datasets for training and fine-tuning models.
5. Evaluation and Testing: Develop frameworks to assess AI performance, including automated, adversarial, human-in-the-loop, and behavioral metrics.
6. LLM Observability: Monitor LLM behavior in production, tracking key metrics like hallucinations and latency.
7. Research and Innovation: Stay current with research, share insights, and test new approaches.
8. Deployment: Collaborate with engineering teams for scalable deployment.

Live the mission : Inspire and empower others by caring for your own wellbeing and your colleagues. Foster a supportive environment emphasizing work-life balance.

Main requirements

• Master’s degree or PhD in related fields.
• Proficiency in Python and frameworks like PyTorch or TensorFlow.
• Strong understanding of generative AI architectures.
• Experience with multi-agent systems and LLMs.
• Problem-solving and data analysis skills.
• Excellent communication skills.
• Passion for integrating R&D and cutting-edge technology into products.

We encourage applicants to apply even if they don't meet all criteria. Prior experience in Python and SQL is mandatory for this role.

Our benefits include:

• WELLHUB: Access to digital fitness and wellness resources, free Gold plan, discounted premium plans.
• FITNESS: Subsidy for onsite gyms and studios.
• FLEXIBLE WORK: Hybrid and remote options, home office stipend, work allowance.
• FLEXIBLE SCHEDULE: Flexible working hours based on personal and business needs.
• PAID TIME OFF: Minimum 25 days holiday plus additional days per tenure, birthday holiday.
• PARENTAL LEAVE: 100% paid parental leave and extended maternity leave.
• CAREER GROWTH: Opportunities for personal and professional development.
• CULTURE: Supportive, high-growth environment with global colleagues, trust, and integrity.