Overview
At Wellhub (Permanent), in PortugalSalary: €55.000 - €68.000Expires at: 2026-06-09Remote policy: Full remote
Your wellbeing matters. Join a company that cares.
The Opportunity
We are hiring a Senior Data Scientist in our Generative AI area in Portugal! This is a Remote – Portugal position, meaning you can work from anywhere within the country. Please note that this role is only open to candidates in Portugal.
Your Impact
Multimodal Extraction: Apply state-of-the-art tools (OCR, vision-language models, document understanding frameworks) to interpret diverse input types;
Prompt Engineering: Develop and refine strategies for using LLMs to extract, summarize, and transform unstructured content into structured formats;
Data Quality & Structuring: Clean, validate, and transform messy, unstructured data into well-defined schemas ready for use in training or analytics pipelines;
Content Filtering: Define standards and build systems for cleaning, validating, and filtering data to ensure accuracy, reduce bias, and align with ethical/safety guidelines;
Human-in-the-Loop Feedback: Design feedback loops where experts validate or enrich data, improving LLM-based extraction reliability;
Scalability & Optimization: Architect cost-efficient, high-throughput data pipelines that are robust to noisy or incomplete sources;
Research & Prototyping: Experiment with emerging tools and methods in the LLM + multimodal space, exploring new ways to enhance information coverage and extraction reliability;
Collaboration: Partner with data engineers and other data scientists to integrate collected data into larger AI and analytics systems;
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.
Main requirements
WHO YOU ARE
Master’s degree (or PhD) in Computer Science, Data Science, Machine Learning, Statistics, or a related field;
Proficiency in Python and experience with libraries for web scraping, OCR (e.g., Tesseract, EasyOCR), and NLP (e.g., HuggingFace Transformers);
Deep understanding of LLM capabilities in multimodal and extraction contexts, including prompt engineering and few-shot learning;
Strong background in unstructured data processing: APIs, web scraping, HTML parsing, OCR, image/document analysis;
Strong analytical problem-solving skills, with a track record of turning noisy data into high-quality datasets for ML;
Excellent communication and documentation skills, with the ability to influence across technical and product teams.
For this specific role, please note that prior experience in data science and Python are mandatory requirements.
Nice to have
Familiarity with visual-language models (e.g., BLIP, Donut, or LayoutLM) and multimodal pipelines;
Hands-on experience in prompt engineering and few-shot learning for data extraction tasks;
Experience deploying or supporting data acquisition systems in production environments.
What we offer you
We’re a wellness company that is committed to the health and wellbeing of our employees. Our benefits include:
WELLHUB: Access digital fitness programs, and online wellness resources for meditation, nutrition, mental health support, and more. You will receive the Gold plan at no cost, and other premium plans will be significantly discounted.
FITNESS: Additional fitness subsidy to access onsite gyms and fitness studios.
FLEXIBLE WORK: Flexible-first policy with two work model options: flexible hybrid and full remote. Home office stipend and monthly flexible work allowance are provided.
FLEXIBLE SCHEDULE: Flexibility to adjust working hours based on personal schedule, time zone, and business needs.
PAID TIME OFF: Minimum of 25 days paid holiday per year plus extra days per tenure, in addition to holidays.
PARENTAL LEAVE: 100% paid parental leave to all new parents and extended maternity leave.
CAREER GROWTH: Opportunities for personal and career growth and development.
CULTURE: Diverse, global, supportive environment in a high-growth tech company.
Wellhub is committed to creating a diverse work environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, sex, gender identity or expression, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status, or any other basis covered by appropriate law.
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