# Data Scientist at IIIIIIUS

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> Responsibilities: - Work with subject matter experts and cli

- **Company:** IIIIIIUS (https://jobs.trythestack.co/companies/iiiiiius)
- **Location:** Spain
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 2–5 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Python, SQL, Statistics, Machine learning, Data analysis, Large language models, Forecasting, Regression, Classification, Data modeling, Consulting, Stakeholder engagement, Technical writing, Version control, Prototyping, Public policy
- **Posted by employer:** 2026-10-30
- **Added to The Stack:** 2026-11-03
- **Listed until:** 2026-12-29
- **Status:** Active
- **Apply:** https://careers.icf.com/us/en/job/R2603576/Data-Scientist (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/data-scientist-iiiiiius-40c64022

## About the role

Responsibilities:
- Work with subject matter experts and clients to frame analytical questions, define success measures and specify data needs.
- Prepare, clean and explore datasets; build, validate and compare statistical, forecasting and ML models.
- Prototype solutions using Python and LLMs where appropriate; test model assumptions, limitations and risks.
- Present findings, assumptions and uncertainty to technical and non-technical audiences; incorporate feedback.
- Produce reproducible analyses, documentation and share reusable methods across the team.
- Contribute technical content to proposals and manage multiple concurrent project commitments.

Requirements:
- Strong hands-on experience with Python (data/ML libraries) and SQL for data extraction and validation.
- Solid grounding in statistics, forecasting and supervised learning (regression/classification) and model evaluation.
- Practical familiarity using large language models responsibly (prompting, validation, privacy/accuracy checks).
- Experience building reproducible workflows, version control and writing maintainable code.
- Ability to translate ambiguous problems into deliverable prototypes and explain uncertainty clearly.
- Good stakeholder communication skills and a relevant quantitative degree or equivalent experience.

## Responsibilities

You will collaborate with subject matter experts to define analytical problems, develop models, and deliver data science solutions for diverse client projects. Additionally, you will present findings to both technical and non-technical audiences and contribute to project proposals.

## Requirements

The role requires hands-on experience in Python, SQL, and statistical modeling, along with a strong understanding of machine learning and large language models. Candidates should possess a relevant degree in a quantitative field and demonstrate the ability to communicate complex findings clearly.

## FAQ

- **Is this Data Scientist role still open?** It was posted on 2026-10-30 and is listed as active on The Stack. Confirm on IIIIIIUS's application page 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 Spain. It is marked on-site.
- **What skills does this role ask for?** The listing names: Python, SQL, Statistics, Machine learning, Data analysis, Large language models, Forecasting, Regression, Classification, Data modeling, Consulting, Stakeholder engagement, Technical writing, Version control, Prototyping, Public policy.

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## About The Stack

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## Notes for agents

- Apply on the employer's page (https://careers.icf.com/us/en/job/R2603576/Data-Scientist). The Stack does not take applications.
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