Data Scientist – Python & Cloud Data Platforms (f/m/x)
⚲ Białystok, Centrum, Bydgoszcz, Gdańsk, Oliwa, Katowice, Kraków, Podgórze, Lublin, Łódź, Śródmieście, Piła, Poznań, Wilda, Rzeszów, Szczecin, Toruń, Warszawa, Mokotów, Wrocław, Fabryczna
Do uzgodnienia
Wymagania
- Cloud Computing
- Python
- Data Platforms
- XGBoost
- Pandas
- NumPy
- Scikit-learn
- Palantir Foundry
- Snowflake
- Microsoft Fabric
- Natural Language Processing
- LLM
- MLflow
- Apache Spark
- Time Series Forecasting
- Microsoft Power BI
Opis stanowiska
Nasze wymagania:
At least 4 years in data science or applied analytics, with models and analyses that made it past the prototype stage
Strong Python skills across the standard data stack (pandas, NumPy, scikit-learn)
Solid statistical foundations: hypothesis testing, regression, experimental design, and knowing when a result is real versus noise
Knowledge of at least one cloud/data platform and its data science components — Azure (Microsoft Fabric, Azure Machine Learning), AWS (SageMaker), GCP (Vertex AI, BigQuery ML), Snowflake (Snowpark ML, Cortex), Databricks (MLflow, Mosaic AI), or Palantir (Foundry Code Workspaces, Foundry ML, AIP)
Ability to communicate analytical results clearly to business stakeholders and influence decisions with data
Familiarity with working autonomously while collaborating effectively with data engineers, architects, and product teams
Fluent English, both written and spoken
Fluent Polish required
Residing in Poland required
Mile widziane:
Production experience with Microsoft Fabric or Palantir Foundry certification (Foundry Data Engineer / Data Scientist tracks)
Experience with time series forecasting, NLP, recommender systems, or exposure to LLM-based workflows
Familiarity with MLOps practices: MLflow, experiment tracking, model versioning, and CI/CD for ML
Experience with Power BI or other BI tools, and distributed processing with Spark/PySpark
O projekcie:
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.
Zakres obowiązków:
Translate business problems into analytical solutions: define hypotheses, choose metrics, and select the right modeling approach for the question at hand
Explore, clean, and prepare data using Python (pandas, NumPy), working with structured and semi-structured sources of varying quality
Build, validate, and tune machine learning models for classification, regression, forecasting, segmentation, and recommendation using scikit-learn, XGBoost, and statsmodels
Design and analyze experiments: A/B tests, statistical hypothesis testing, and causal analysis that hold up to scrutiny
Work hands-on with enterprise data platforms such as Microsoft Fabric (lakehouses, notebooks, semantic models) and Palantir Foundry (pipelines, ontology, operational workflows)
Communicate findings through clear visualizations, dashboards, and narratives tailored to technical and non-technical stakeholders alike
Collaborate with data engineers on data availability and quality, and with ML/AI engineers to move models from notebook to production
Monitor deployed models for drift and degradation, and own the retraining and improvement cycle
Oferujemy:
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.
Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People
At least 4 years in data science or applied analytics, with models and analyses that made it past the prototype stage
Strong Python skills across the standard data stack (pandas, NumPy, scikit-learn)
Solid statistical foundations: hypothesis testing, regression, experimental design, and knowing when a result is real versus noise
Knowledge of at least one cloud/data platform and its data science components — Azure (Microsoft Fabric, Azure Machine Learning), AWS (SageMaker), GCP (Vertex AI, BigQuery ML), Snowflake (Snowpark ML, Cortex), Databricks (MLflow, Mosaic AI), or Palantir (Foundry Code Workspaces, Foundry ML, AIP)
Ability to communicate analytical results clearly to business stakeholders and influence decisions with data
Familiarity with working autonomously while collaborating effectively with data engineers, architects, and product teams
Fluent English, both written and spoken
Fluent Polish required
Residing in Poland required
Mile widziane:
Production experience with Microsoft Fabric or Palantir Foundry certification (Foundry Data Engineer / Data Scientist tracks)
Experience with time series forecasting, NLP, recommender systems, or exposure to LLM-based workflows
Familiarity with MLOps practices: MLflow, experiment tracking, model versioning, and CI/CD for ML
Experience with Power BI or other BI tools, and distributed processing with Spark/PySpark
O projekcie:
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.
Zakres obowiązków:
Translate business problems into analytical solutions: define hypotheses, choose metrics, and select the right modeling approach for the question at hand
Explore, clean, and prepare data using Python (pandas, NumPy), working with structured and semi-structured sources of varying quality
Build, validate, and tune machine learning models for classification, regression, forecasting, segmentation, and recommendation using scikit-learn, XGBoost, and statsmodels
Design and analyze experiments: A/B tests, statistical hypothesis testing, and causal analysis that hold up to scrutiny
Work hands-on with enterprise data platforms such as Microsoft Fabric (lakehouses, notebooks, semantic models) and Palantir Foundry (pipelines, ontology, operational workflows)
Communicate findings through clear visualizations, dashboards, and narratives tailored to technical and non-technical stakeholders alike
Collaborate with data engineers on data availability and quality, and with ML/AI engineers to move models from notebook to production
Monitor deployed models for drift and degradation, and own the retraining and improvement cycle
Oferujemy:
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.
Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People
🔍 Dekoder Ogłoszenia
🔴
models and analyses that made it past the prototype stage
Oczekuje się, że kandydat potrafi tworzyć modele, które nie są tylko teoretycznymi ćwiczeniami, ale zostały już wdrożone lub przetestowane w praktyce.
🟡
Ability to communicate analytical results clearly to business stakeholders and influence decisions with data
Oprócz umiejętności technicznych, kluczowa jest zdolność do tłumaczenia złożonych analiz na język zrozumiały dla osób nietechnicznych i przekonywania ich do podejmowania decyzji na podstawie danych.
🟡
Familiarity with working autonomously while collaborating effectively with data engineers, architects, and product teams
Oczekuje się samodzielności w pracy, ale jednocześnie umiejętności efektywnej współpracy z innymi zespołami, co może oznaczać potrzebę zarządzania wieloma zależnościami.
🔴
Production experience with Microsoft Fabric or Palantir Foundry certification
Chociaż jest to mile widziane, może sugerować, że firma intensywnie korzysta z tych konkretnych platform i preferuje kandydatów z doświadczeniem w nich.
🔴
turn ambiguous business questions into models
Oznacza to, że kandydat musi być w stanie samodzielnie definiować problemy i cele projektowe na podstawie niejasnych potrzeb biznesowych.