Data Scientist – Python & Cloud Data Platforms (f/m/x)

Sii Ukraine LLC; Polska; Hybrid; PLN 180,000 - 300,000; Full time

Benefits offered by this job

AI Grant

AI Center of Excellence

Your tools, your choice

Real project variety

Conference and speaking support

Job summary

Sii Ukraine LLC is seeking data scientists who turn ambiguous business questions into models and analyses that actually get used. You’ll frame the problem, wrangle the data, build and validate models, and explain what the numbers mean to people who don’t speak Python.

You’ll work with the classic Python data stack on modern platforms and cloud environments, deploying analytics and notebooks in Azure, AWS, or GCP, and using Palantir Foundry and Microsoft Fabric.

Qualifications

• Turn ambiguous business questions into actionable models.
• Proficient with Python data stack: pandas, NumPy, scikit-learn.
• Experience with enterprise data platforms and cloud services.

Responsibilities

• Frame business problems and translate them into data-driven solutions.
• Wrangle, clean, and preprocess data for model training and evaluation.
• Build, validate, and explain models to non-technical stakeholders.

Skills

Python

Pandas

NumPy

Scikit-learn

Data wrangling

Modeling

Tools

Palantir Foundry

Microsoft Fabric

Azure

AWS

GCP

Claude

Cursor

GitHub Copilot

Job description

We’re looking for data scientists who turn ambiguous business questions into models and analyses that actually get used. You’ll frame the problem, wrangle the data, build and validate models, and — just as importantly — explain what the numbers mean to people who don’t speak Python. Your day-to-day will revolve around the classic Python data stack: pandas, NumPy, and scikit-learn.

You’ll also work on modern enterprise data platforms — running notebooks and lakehouse workloads in Microsoft Fabric, building pipelines and operational applications in Palantir Foundry, and deploying analytics on Azure, AWS, or GCP. The science matters, but so does making it work inside a real organization’s data ecosystem.

What we offer:

• AI Grant — Stop talking about AI and start building it. Our AI Grant gives you dedicated budget and resources to turn your wildest AI idea into a working project, backed by two paid weeks to focus on nothing else.
• AI Center of Excellence — Work alongside specialists in agentic AI, sovereign AI, generative and discriminative AI. This isn’t a siloed team — it’s the people you’ll learn from and build with daily.
• Your tools, your choice — Full access to AI-powered development tools including Claude, Cursor, and GitHub Copilot. Pick what works best for you.
• Real project variety — From generative AI for legal document compliance through agent in manufacturing etc… ??
• Conference and speaking support — Want to attend conferences? We’ll back you… …