Tomasz Rachoń
@tomaszracho
I build automated sales reporting and insights from large-scale data.
PolandWhat I'm looking for
At Decathlon Poland, I develop automated reports and dashboards for sales-related decisions using Databricks, SQL, Python, and PySpark. I translate stakeholder requirements into reporting solutions and support predictive business-analysis use cases.
Previously at NielsenIQ, I optimized Oracle SQL queries and delivered FMCG sales insights in a big-data environment. My background as a Polish Land Forces Officer and NATO Liaison Officer brings operational management, leadership, and experience communicating with international stakeholders.
Experience
Work history, roles, and key accomplishments
Junior Big Data Analyst
Decathlon Poland
Nov 2024 - Present (1 year 10 months)
Develop automated reports and dashboards supporting business decision-making across sales-related areas. Work with large-scale sales datasets using Databricks, SQL, Python, and PySpark, and support predictive models for business analysis.
Education
Degrees, certifications, and relevant coursework
Warsaw School of Economics
Master's Degree, Advanced Analytics - Big Data
2024 -
Pursuing a Master's Degree in Advanced Analytics with a focus on Big Data, covering cloud data, statistics, data analysis, and machine learning.
Łazarski University of Technology
Postgraduate Studies, Cybersecurity and Computer Forensics
2022 - 2023
Completed postgraduate studies in Cybersecurity and Computer Forensics, gaining skills in Python, SQL, Kali Linux, and data exploration.
Military University of Land Forces
Bachelor's and Master's Degree, Management
2014 - 2019
Earned Bachelor's and Master's degrees with a focus on business understanding, business analysis, mathematics, and statistics.
Tech stack
Software and tools used professionally
Availability
Location
PolandAuthorized to work in
Salary expectations
Job categories
Skills
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