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Software Development
Senior Data Scientist
@Wellhub
[Hiring] Senior Data Scientist @Wellhub
Mar 25, 2025 - Wellhub is hiring a remote Senior Data Scientist. 💸 Salary: unspecified. 📍Location: Brazil, Portugal.
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Role Description
We are hiring a “Senior Data Scientist” to our CARE team in Brazil! We are looking for a talented and motivated Data Scientist to join our team in Brazil/Portugal and contribute to groundbreaking projects in the field of Generative AI. In this role, you will help shape the future of AI-powered wellness solutions by leveraging Generative AI, fine-tuning of LLMs, and evaluation of Agentic systems.
- Model Development & Fine tuning: Understanding of state-of-the-art deep learning techniques, such as Transformers architectures and attention mechanisms, and knowledge of fine-tuning LLMs for enhanced model performance, using techniques such as LoRA, QLoRA, among others.
- Function Calling & Tool Use: Design and implement structured function calling mechanisms within LLMs to enable dynamic interactions with APIs, databases, and retrieval-augmented generation (RAG) pipelines.
- Prompt Engineering: Craft clear instructions that help our models understand exactly what we need, creating reusable templates and testing against edge cases.
- Data Preparation: Preprocess, analyse, and curate high-quality datasets to train and fine-tune both embedding and generative models.
- Evaluation and Testing: Develop robust evaluation frameworks to assess agentic AI performance, combining automated evaluation (LLM-as-judge), adversarial testing, human-in-the-loop evaluations, and custom behavioral metrics.
- LLM Observability: Establish monitoring systems that track LLM behavior in production, capturing key metrics around information retrieval, hallucinations, and latency.
- Research and Innovation: Stay current with the latest research in generative AI, share insights with the team, test promising approaches, and help make us better.
- Deployment: Collaborate with engineering teams to deploy models in scalable and efficient production environments.
- Live the mission: Inspire and empower others by genuinely caring for your own wellbeing and your colleagues. Bring wellbeing to the forefront of work, and create a supportive environment where everyone feels comfortable taking care of themselves, taking time off, and finding work-life balance.
Qualifications
- 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.
- Have clear scientific thinking and a passion for integrating R&D and cutting-edge technology into a product.
Requirements
- Prior experience in Python and SQL are mandatory requirements.
Benefits
- Health, dental, and life insurance.
- Flexible work options: flexible hybrid and full remote models.
- Home office stipend and a monthly flexible work allowance.
- Flexibility to adjust working hours based on personal schedule, time zone, and business needs.
- Access to onsite gyms and fitness studios, digital fitness programs, and online wellness resources.
- Vacations after 6 months and 3 days off per year + 1 day off for each year of tenure (up to 5 additional days) + extra day off for your birthday.
- 100% paid parental leave to all new parents and extended maternity leave.
- Outstanding opportunities for personal and career growth.
- An exciting and supportive atmosphere with ambitious people from around the world.
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| 📍 | Be aware of the location restriction for this remote position: Brazil, Portugal |
| ‼ | Beware of scams! When applying for jobs, you should NEVER have to pay anything. Learn more. |
Back to Remote jobs >
Software Development
Software Development
|
Salary
💸
unspecified
|
Remote
Location
Brazil, Portugal
|
|
Job Type
unspecified
|
Posted
Mar 25, 2025
|
️
| 📍 | Be aware of the location restriction for this remote position: Brazil, Portugal |
| ‼ | Beware of scams! When applying for jobs, you should NEVER have to pay anything. Learn more. |
