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Bartosz Stępak

Bartosz Stępak

Certified

Data Scientist

- | Berlin

Technologies

My Portfolio Highlights

My New Workbook

Course Notes: Introduction to Regression with statsmodels in Python

My New Course

Introduction to Python

My New Workbook

Course Notes: Introduction to Regression with statsmodels in Python

Enthusiastically combining the possibility of Python in the world of renewable energy.

My Work

Take a look at my latest work.

course

Introduction to Regression with statsmodels in Python

DataLab

Course Notes: Introduction to Regression with statsmodels in Python

DataLab

Predicting Credit Card Approvals

DataLab

RDocumentation: write.table

DataLab

Introduction to NumPy

course

Introduction to Regression with statsmodels in Python

My Certifications

These are the industry credentials that I’ve earned.

Data Scientist Associate

Data Scientist Associate

Understanding Data Science

Understanding Data Science

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

Courses

Introduction to Python
Introduction to AI Agents
Introduction to AI for Work
Introduction to SQL

My Work Experience

Where I've interned and worked during my career.

CCE | Apr 2025 - Oct 2025

Quantitative Analyst - Power Markets

• built and maintained python based fundamental electricity price forecasting models across European markets (FR, NL, DE, AT, IT, RO), • developed internal long term solar captured price curves (fixed-tilt, single-axis tracker PV) to evaluate cannibalisation impact, • automated data workflows and pipelines in python environment, • contributed to implementation of internal BESS revenue models across European markets, • supported origination team on PPA offtake structures, • designed dashboards and reporting tools to deliver recent power market developments to management
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Qcells | Dec 2023 - Mar 2025

Expert Portfolio Management

• energy procurement & trading strategies execution, • portfolio & risk management, • GoOs procurement, • contribution to implementation of robotron*ecount & *esales, • supporting the balancing and communication processes according to MaBiS, • automatization and optimization of back‑office processes and data flows with Python, PowerShell & VBA

GEWI Sp. z o.o. | Nov 2022 - Nov 2023

Wholesale Electricity Market Specialist

• trading activity (mainly Day-Ahead Market), • collecting and processing market data with Python, • developing forecasting models of RES generations in accordance with “SOGL” guidelines, • automatization and optimization of back‑office processes using Python & VBA, • following the legal framework updates regarding renewable energy in both Poland and the EU, • ongoing contact with TSO, DSO, ERO, • managing the nomination processes for RES installations within DSOs, • accounting for the energy sold and purchased on Balancing Market

Columbus Energy S.A | Apr 2021 - Oct 2022

Energy Market Analyst

• trading activity (mainly Day-Ahead Market) on TGE, • GoOs procurement, • analyzing the wholesale electricity market data, • modeling and simulation of electricity consumption profiles, • automatization and optimization of back-office processes using Python & VBA, • collecting and processing market data with Python, • monitoring the legislation for renewable energy in Poland and the EU, • PPA offtake & structuring

Vortex Energy - Obrót | Feb 2020 - Mar 2021

Energy Market Analysis and Wholesale Trading Department - Internship

• accounting of the energy produced from RES, • accounting of the energy used from RES, • analyzing the wholesale electricity market data, • modeling and simulation of electricity consumption profiles, • automatization and optimization of back-office processes using Python & VBA, • accounting for the energy sold and purchased on Balancing Market

My Education

Take a look at my formal education

Engineer (Engr.), Renewable Energy SourcesWest Pomeranian University of Technology in Szczecin | 2021

About Me

Bartosz Stępak

Enthusiastically combining the possibilities of Python in the world of renewable energy.

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