Data Scientist – Extensions

Fundamental

Data Scientist developing data science capabilities for AI-driven enterprise decision-making. Collaborating on technical challenges to improve predictive performance across various use cases and data types.

Posted 6/22/2026full-timeRemote • 🇪🇺 Anywhere in EuropeMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

NumpyPandasPythonScikit-Learn

About the role

Key responsibilities & impact

Research and develop data science methods that improve NEXUS predictive performance across diverse enterprise datasets, industries, and prediction task types
Design and implement robust, production-quality Python components with a strong focus on correctness, generality, and reusability
Deeply understand the characteristics of real-world enterprise data and develop strategies that help NEXUS handle them reliably
Run rigorous experiments to measure the impact of new approaches, design meaningful benchmarks, and use results to guide prioritization
Work across a wide variety of structured data problems - including but not limited to classification, regression, ranking, and forecasting
Collaborate closely with the Engineering and Research teams to develop a deep understanding of NEXUS model behavior and use that knowledge to inform your work
Work with Applied AI Engineers to validate approaches on real customer datasets and translate findings into product capabilities
Contribute to technical documentation and internal best practices, helping the broader team apply new capabilities correctly and confidently

Requirements

What you’ll need

5+ years of experience in data science or machine learning roles
Strong Python skills, including fluency with pandas, numpy, and scikit-learn
Deep hands-on experience with traditional ML models: XGBoost, LightGBM, CatBoost, and similar gradient boosting frameworks
Solid understanding of what makes real-world tabular data challenging: class imbalance, high cardinality, distribution shift, missing values, and more
Strong experimental mindset - comfortable designing benchmarks and drawing rigorous conclusions from noisy results
Ability to work autonomously and drive work from idea to shipped output

Benefits

Comp & perks

Competitive compensation with salary and equity
Comprehensive health coverage for you and your dependents
Paid parental leave for all new parents, inclusive of adoptive and surrogate journeys
Relocation support for employees moving to join the team in one of our office locations
A mission-driven, low-ego culture that values diversity of thought, ownership, and bias toward action

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

data sciencemachine learningPythonpandasnumpyscikit-learnXGBoostLightGBMCatBoostexperimental design

Soft Skills

collaborationautonomyproblem-solvingcritical thinkingcommunicationadaptabilityattention to detailcreativitytime managementprioritization