We are looking for aData Scientistto join an international tech hub in Lisbon.Work setup:Hybrid – Lisbon, Portugal – 2 days on-site per week / 3 days remote.Responsibilities: Design, build, and improve analytical and machine learning models to solve business problems and deliver measurable value Perform exploratory data analysis, data preparation, and feature engineering to support robust model development Develop, train, tune, and validate supervised and unsupervised machine learning models Apply statistical methods and probability concepts to analyze data, test hypotheses, and support decision-making Query and analyze data using SQL to extract insights and support model development Create clear visualizations and present findings to both technical and non-technical stakeholders Contribute to ML experimentation, model evaluation, and validation processes using standard tools and best practices Collaborate across multiple data teams to ensure quality, reliability, and alignment throughout the model lifecycleMust-have requirements: 3 years of professional experience in data science environments Strong experience with Python, including NumPy, pandas, and scikit-learn Good understanding of machine learning model development, tuning, and validation for supervised and unsupervised approaches Solid experience in exploratory data analysis and feature engineering Strong foundation in statistics and probability Proficiency in SQL for data analysis and querying Experience with data visualization tools such as Matplotlib, Seaborn, Plotly, Power BI, or Tableau Understanding of ML experimentation tools and MLOps fundamentals Basic familiarity with cloud ML platforms such as Azure ML, AWS SageMaker, or GCP Vertex AI English proficiency at B2 level or aboveIf you're interested, apply directly or send your CV with your daily rate and availability for a call to .