Senior Data Scientist at IIIIIIUS

✨ The Stack take on this IIIIIIUS job

• 🏢 IIIIIIUS has 6 jobs here, 6 with visa sponsorship see all
• 🛂 Visa: Highly Qualified Professional permit. Education: Higher education degree guide
• 💡 No salary shown. Ask IIIIIIUS if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

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About the role

Responsibilities:
- Deliver applied data science and impact evaluations for public policy and programme work.
- Design and run causal analyses (DiD, regression designs, matching) and apply counterfactual reasoning to assess intervention effects.
- Work with messy, real-world datasets: cleaning, EDA, feature construction and reproducible workflows.
- Develop and test AI-supported analytic workflows and combine behavioural science insights with quantitative methods.
- Produce clear outputs: write report sections, present findings to clients and support proposals.
- Collaborate with policy researchers, evaluators and technical teams across multiple projects.

Requirements:
- Strong quantitative background (data science, statistics, economics, behavioural science or related social science).
- Professional experience in applied analysis, consulting, policy evaluation or research.
- Proficiency in Python for data analysis and reproducible workflows.
- Practical experience with causal inference methods (DiD, regression-based designs, matching) and threats to validity.
- Skilled in statistical modelling, EDA and communicating technical findings to non-technical stakeholders.
- Familiarity with behavioural science applications to evaluation and a commitment to rigorous, transparent methods.

Responsibilities

The Senior Data Scientist will deliver applied data science solutions for public policy and evaluation projects while developing new AI-enabled analytical workflows. They will collaborate with policy researchers and evaluators to conduct causal analysis and present findings to stakeholders.

Requirements

Candidates must have a strong quantitative background in data science, statistics, or social sciences with professional experience in applied research or consulting. Proficiency in Python and experience with causal inference methods or impact evaluation design are essential.

Key skills

• Data science — in 86 other listings on The Stack
• Statistics — in 53 other listings on The Stack
• Python — in 1200 other listings on The Stack
• Impact evaluation — in 4 other listings on The Stack
• Causal analysis — in 4 other listings on The Stack
• Behavioural science — in 2 other listings on The Stack
• Machine learning — in 291 other listings on The Stack
• Generative AI — in 58 other listings on The Stack
• Exploratory data analysis
• Statistical modelling
• Feature construction
• Difference-in-differences
• Regression-based designs
• Policy analysis
• Technical communication
• Quantitative analysis

On The Stack (as of 2026-11-05)

• IIIIIIUS has 5 other listings on The Stack, 5 of them marked as offering visa sponsorship.
• 76 visa-sponsored jobs in Spain on The Stack, posted in the last 60 days.
• 68 visa-sponsored data scientist jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about IIIIIIUS

Is this Senior Data Scientist role still open?

It was posted on 2026-04-03. Listings more than 30 days old may no longer be active, so check IIIIIIUS's site before applying.

Does IIIIIIUS offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on IIIIIIUS's site.

Where is this role located?

The listing gives the location as Madrid, Spain. It is marked on-site.

What skills does this role ask for?

The listing names: Data science, Statistics, Python, Impact evaluation, Causal analysis, Behavioural science, Machine learning, Generative AI, Exploratory data analysis, Statistical modelling, Feature construction, Difference-in-differences, Regression-based designs, Policy analysis, Technical communication, Quantitative analysis.