03/17/2025 updated
UP
100 % available
Senior ETL Developer with Extensive Data Warehousing Experience
Warschau, Poland
Worldwide
Bachelor degree of Information Technology in Belarusian State University of Informatics and Radioelectronics, MinskHTMLPHPData AnalysisBankingTelecommunicationsBusiness IntelligenceBig DataC Sharp (Programming Language)C++ (Programming Language)Cascading Style Sheets (CSS)Cloud ComputingDatabasesExtract Transform Load (ETL)Data SystemData Warehousing
ETL Development
Extensive experience in developing, deploying, and administrating ETL processes using various tools such as IBM InfoSphere DataStage, Informatica PowerCenter, and Talend.
Data Warehousing
Strong knowledge of DWH and OLAP theory and concepts, with practical experience in implementing and maintaining data warehouses for various industries including telecommunications and banking.
Database Management
Proficiency in working with multiple database systems including Oracle, Microsoft SQL Server, PostgreSQL, IBM DB2, and Teradata, as well as performing database administration tasks.
Programming Languages
Skilled in multiple programming languages including SQL, C#, C/C++, VB, PHP, and Python for developing robust data solutions.
Web Technologies
Familiarity with HTML/CSS and web development experience, enabling integration of data solutions with web-based applications.
Business Intelligence Tools
Experience with various BI tools such as SAS Data Integration Studio, PowerBI, and IBM Cognos for data analysis and reporting.
Cloud and Big Data Technologies
Knowledge of modern data processing technologies including Kafka for data flows and experience with large-scale data processing.
Extensive experience in developing, deploying, and administrating ETL processes using various tools such as IBM InfoSphere DataStage, Informatica PowerCenter, and Talend.
Data Warehousing
Strong knowledge of DWH and OLAP theory and concepts, with practical experience in implementing and maintaining data warehouses for various industries including telecommunications and banking.
Database Management
Proficiency in working with multiple database systems including Oracle, Microsoft SQL Server, PostgreSQL, IBM DB2, and Teradata, as well as performing database administration tasks.
Programming Languages
Skilled in multiple programming languages including SQL, C#, C/C++, VB, PHP, and Python for developing robust data solutions.
Web Technologies
Familiarity with HTML/CSS and web development experience, enabling integration of data solutions with web-based applications.
Business Intelligence Tools
Experience with various BI tools such as SAS Data Integration Studio, PowerBI, and IBM Cognos for data analysis and reporting.
Cloud and Big Data Technologies
Knowledge of modern data processing technologies including Kafka for data flows and experience with large-scale data processing.
Experience
Professional experience10+ years
Freelancer since2021
Languages
GermanFluentEnglishFluentPolishFluentRussianNative speaker
Project history
Development and support of the telecommunication system for one of the biggest telecom providers. Designed ETL solution using DataStage jobs with WebServices, implemented data collection and analytics processes.
Development of monitoring solution and non-performing loans processes for several banks in Danish banking system using Informatica PC processes and Netezza DB.
Enterprise DWH implementation and maintenance for commercial bank. Developed ETL processes for loading data from different sources and transformation to DWH structure.