Technical Lead — Data Science (f/m/x)

Sii Ukraine LLC; Polska; Hybrid; PLN 300,000 - 420,000; Full time

Benefits offered by this job

AI Grant — Stop talking about AI and …

AI Center of Excellence — Work with AI

Your tools, your choice — Access to AI

Real project variety — Generative AI,

Conference and speaking support — Attt

Job summary

Sii Ukraine LLC is seeking a technical lead to guide a team of data scientists through end-to-end projects, from framing client problems to signing off on modeling approaches and ensuring deployments run smoothly.

This hands-on role keeps you coding in Python, challenging model choices, and mentoring others while you set the technical direction that keeps projects on track across platforms like Microsoft Fabric, Palantir Foundry, Databricks, and the major clouds.

Responsibilities

• Own the technical direction of data science projects end-to-end, from framing the problem with the client to signing off on the modeling approach, reviewing the work, and ensuring deployments actually run.
• This is a hands-on role. You’ll still write Python, challenge model choices, and drive standards, mentoring the team and making the technical calls across platforms like Microsoft Fabric, Palantir Foundry, Databricks, and major clouds.

Job description

We’re looking for a technical lead who can do two hard things at once: keep a team of data scientists shipping work that holds up to scrutiny, and stay close enough to the code to know when it doesn’t. You’ll own the technical direction of data science projects end-to-end — from framing the problem with the client to signing off on the modeling approach, reviewing the work, and making sure what gets delivered actually runs.

This is a hands-on role. You’ll still write Python, still challenge model choices, still dig into why the metrics look too good. But your biggest impact will come through others — setting standards, mentoring the team, and making the technical calls that keep projects on track across platforms like Microsoft Fabric, Palantir Foundry, Databricks, and the major clouds.

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 agentic systems in manufacturing environments, to enterprise-scale AI platforms, computer vision, and autonomous driving. You won’t get bored.

Conference and speaking support — Want to attend conferences? We’ll back you. Want to speak at them? Even better — we’ll support you with dedicated preparation time and bonuses.