Junior Data Scientist (f/m/d)

October 19, 2026

Hybrid

Junior

Warsaw, Poland

Also worth knowing

English is required

Description

A Junior Data Scientist role in the Polish energy and gas business, turning commercial and trading questions into robust analyses, models and data products. The work covers developing and improving predictive machine-learning models, including time-series, regression and classification approaches. The role involves working with large-scale data using SQL, Python, GCP and Snowflake, visualising results with Power BI and communicating insights to technical and business stakeholders.

Gender markers in the title: (f/m/d)

In accordance with European anti-discrimination legislation, this job is open to all candidates

Ffemale

Mmale

Ddiverse

Responsibilities

Develop, maintain and improve predictive machine-learning models, including time-series, regression and classification models
Translate commercial and trading questions into analyses, models and practical data products
Work with large-scale data and use tools such as SQL, Python, GCP and Snowflake to deliver reliable analytical solutions
Explore and visualise results, including with Power BI, and explain findings to technical and business stakeholders
Check data quality, validate analytical outputs and critically review code and model results
Document work clearly so that analyses and models can be understood, maintained and handed over effectively
Contribute to improving processes, performance and efficiency across the business

Requirements

Bachelor’s degree in data science, mathematics, IT, economics, finance, energy or a related field
At least one year of experience in data science or a similar analytical role
Strong SQL skills, including practical knowledge of query optimisation
Practical Python skills and a sound understanding of data science and machine-learning concepts, such as model evaluation, clustering and common model types
Analytical approach, strong critical-thinking skills and confidence working through complex, ambiguous problems
A challenging mindset: question assumptions, investigate root causes and look for better ways to solve problems
A proactive, self-sufficient and entrepreneurial approach with a can-do attitude and the ability to work well with multiple stakeholders
Good spoken and written English; Polish is relevant for the local business context
Knowledge of the Polish energy and gas industry is an advantage

Conditions

Full-time employment contract
Development in an international company that is shaping the face of the energy market
A progressive medical care package that takes care of your health and well-being
Co-financing of the Multisport card, enabling the use of various forms of physical activity
Foreign language classes during working hours
Flexible working hours and the possibility to work in hybrid mode
An office located in the city center
A motivated team, ready to guide you through your daily challenges