Marcin Olejniczak
@marcinolejniczak
Inventory-focused manager and data analyst optimizing supply chains.
What I'm looking for
I am an experienced inventory management professional and data analyst with a proven record of maintaining appropriate stock levels, optimizing transportation and storage costs, and producing actionable reports and forecasts. I have led teams, supported returns and quality-control processes, and prepared financial and sales forecasts for multi-state operations.
I combine hands-on production and warehouse leadership with analytical skills in spreadsheets, SQL, Tableau, and data visualization, backed by the Google Data Analytics Professional Certificate. I deliver process improvements, cost reductions, and data-driven decisions to improve operational continuity and efficiency.
Experience
Work history, roles, and key accomplishments
Production Machine Operator
Wytwórnia Opakowań Wojciech Kenkel
Oct 2024 - Present (11 months)
Perform quality control and ensure manufactured products meet specifications while maintaining continuity of the production process. Monitor operations to sustain throughput and compliance.
Data Analyst
Buffalo Market
Oct 2022 - Jul 2024 (1 year 9 months)
Maintained appropriate inventory levels and prepared orders based on sales data and forecasts, reducing transport and storage costs through data-driven optimizations. Produced inventory, sales, and financial reports for forecasting.
Warehouse Staff / Returns Specialist
DTS Group
May 2022 - Oct 2022 (5 months)
Executed quality control of products and processes, recorded deviations from standards, and supported returns and complaints workflows to improve reverse logistics accuracy.
Co-managed a team of up to 40 people, monitored and optimized sorting processes, and oversaw truck loading to ensure departures met schedule readiness. Improved operational throughput on the flat sorter.
Education
Degrees, certifications, and relevant coursework
Professional Certificate, Data Analytics
Completed the Google Data Analytics Professional Certificate comprising eight courses with hands-on assessments preparing for introductory-level data analytics roles.
Availability
Location
Authorized to work in
Job categories
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