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Selected role

[Job-00025] Senior Data Scientist, Portugal

Ci&T Remoto, PT

Senior Full-time

We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.

With over 8,000 CI&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.

We are looking for a passionate and versatile Data Scientist to join our global team at CI&T. In this role, you will apply statistical modeling, machine learning, and advanced analytics to solve real-world problems for some of the world’s largest brands. You will work with structured and unstructured data, experiment with algorithms, and build data-driven solutions that drive business impact.

Main Responsibilities:

Understand complex business challenges and translate them into data science problems.
Explore, analyze, clean, and model structured and unstructured datasets from various sources.
Design and implement machine learning models, statistical tests, and optimization strategies.
Conduct experimentation using A/B testing, uplift modeling, and simulation frameworks.
Deliver Proof-of-Concepts and production-ready models within Agile and cross-functional teams.
Create and present data storytelling insights for both technical and business stakeholders.
Contribute to model explainability, fairness, and responsible AI practices.
Stay updated on academic and industry research, and promote innovative solutions.

Requirements:

Proficiency in Python (pandas, scikit-learn, statsmodels, etc.) and SQL.
Experience building and validating ML models: regression, classification, clustering, dimensionality reduction, forecasting.
Strong knowledge of data wrangling, feature engineering, and statistical hypothesis testing.
Experience with cloud platforms (AWS, Azure, or GCP) and scalable data/ML tools (e.g., Databricks, BigQuery, SageMaker).
Familiarity with Git and experimentation frameworks.
Experience with model deployment and integration into digital products or services.
Business acumen and a consulting mindset to help translate insights into impact.
Advanced communication skills in English (written and spoken), able to work in multicultural teams.

Nice to Have:

Knowledge of Explainable AI techniques.
Exposure to graph analytics, recommender systems, or NLP applications.
Experience with data visualization tools (Power BI, Tableau, Plotly, Streamlit).
Understanding of data governance, quality, and security (including GDPR).
Familiarity with CI/CD and MLOps practices (e.g., MLflow, DVC).

#LI-BM2

Why join us?

Competitive Salary
Generous paid vacation days
Generous sick time
100% paid health & dental benefits starting day one
Annual profit-sharing distribution
Paid parental leave
Dedicated career advisor

And so much more…

Collaboration is our superpower, diversity unites us, and excellence is our standard.

We value diverse identities and life experiences, fostering a diverse, inclusive, and safe work environment. We encourage applications from diverse and underrepresented groups to our job positions.

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