We are looking for a Data Scientist to 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 valuePerform exploratory data analysis, data preparation, and feature engineering to support robust model developmentDevelop, train, tune, and validate supervised and unsupervised machine learning modelsApply statistical methods and probability concepts to analyze data, test hypotheses, and support decision-makingQuery and analyze data using SQL to extract insights and support model developmentCreate clear visualizations and present findings to both technical and non-technical stakeholdersContribute to ML experimentation, model evaluation, and validation processes using standard tools and best practicesCollaborate across multiple data teams to ensure quality, reliability, and alignment throughout the model lifecycleMust-have requirements:3 years of professional experience in data science environmentsStrong experience with Python, including NumPy, pandas, and scikit-learnGood understanding of machine learning model development, tuning, and validation for supervised and unsupervised approachesSolid experience in exploratory data analysis and feature engineeringStrong foundation in statistics and probabilityProficiency in SQL for data analysis and queryingExperience with data visualization tools such as Matplotlib, Seaborn, Plotly, Power BI, or TableauUnderstanding of ML experimentation tools and MLOps fundamentalsBasic familiarity with cloud ML platforms such as Azure ML, AWS SageMaker, or GCP Vertex AIEnglish 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 .