Marcin Szaleniec
Development
Poland, Poland
Skills
Data Analysis
About
Marcin Szaleniec's skills align with System Developers and Analysts (Information and Communication Technology). Marcin also has skills associated with Programmers (Information and Communication Technology). Marcin Szaleniec has 19 years of work experience.
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Work Experience
Business Intelligence Analyst
Ocado Technology
January 2021 - October 2023
- Ocado Technology is a leading grocery retailer and technology solution provider, known for its authomatized warehouse systems. My tasks involved: Link and shape data from different systems in GCP Big Query resulting in an integrated data architecture. Design data objects best fitted to analytical needs. Constantly monitor data quality and troubleshooting. Perform analysis with Python (Numpy, Pandas, Seaborn/Matplotlib), GCP Looker Studio. Build and manage explores and dashboards in Looker Software, in collaboration with a team, using git for version control. Pipeline data flow with dbt.
Senior Data Analyst
IAG GBS
July 2017 - December 2020
- Part of International Airlines Group (IAG), one of the world's leading airline groups and owner of some of the biggest brands in the sky, that is: Aer Lingus, Avios, British Airways, IAG, IAG Cargo, Iberia, Iberia Express, LEVEL and Vueling. My role involves: Design and automatize data flow in areas of procurement, invoice management and finance. Extract data from various sources, including SAP, Cognos, relational databases and Excel workbooks. Transform it with use of SQL, Excel, VBA, batch script and python. Create Power BI reports and collaborate in Tableau dashboards based on transformed and uploaded data. Understand needs and desires of the reports and dashboards users, extracting information from data and knowledge from information.
Sales analyst
Vistula Group
October 2013 - June 2017
- Provide sales and financial reports on a regular basis and ad hoc to managers of one of the leading apparels and jewelry manufacturers and retailers in Poland. My tasks included: Visualize sales data on QlikView and Qlik Sense as well as Excel based dashboards. Extract, transform and load data with MS SQL Server, MS Access and I agree to the processing of personal data provided in this document for realising the recruitment process pursuant to the Personal Data SAS. Automatize tasks with VBA and batch scripts.
Project Coordinator
Regional Exams Board
January 2011 - May 2013
PMR Ltd
January 2010 - December 2012
Specialist
PR department
January 2003 - December 2008
Retail market analyst
January 2005 - December 2007
National Bank of Poland
May 2005 - May 2005
Education
AGH University of Sciences and Technology
Master of Science
January 1997 - January 2010
