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Розробник BI
- City of residence:
- Dnipro
- Ready to work:
- Dnipro, Remote
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Igor Kholosha
Senior BI & Data Engineer
Location: Varna, Bulgaria
Experience: 26 years | English (Advanced), Ukrainian (Native)
SUMMARY PROFESSIONAL EXPERIENCE
Expert Data Professional with over two decades of experience in Allane SE (ex. SIXT-Leasing)
architecting and deploying enterprise-grade BI solutions. Proven Senior BI Engineer | Apr 2020 - Present
track record in building scalable AWS Cloud BI platforms from • Cloud Business Intelligence system for Allane SE
scratch using serverless architectures and leading international • Architected and established an AWS-based data and reporting
teams. Specialized in end-to-end data lifecycle management to platform from scratch for 1000+ users.
enhance decision-making and ensure compliance. • Developed automated ETL pipelines with AWS Glue and Lambda for
event-driven processing.
TECHNICAL SKILLS • Implemented Step Functions for orchestration of distributed data
AWS: RedShift, Glue, Lambda, Step Functions, S3, EC2 workflows.
BI: Qlik Sense, Oracle OBIEE, Tableau, Crystal Reports • Delivered 5 major BI applications for controlling (Margin, P&L, 360
Management View).
Databases: RedShift, Oracle, MS SQL, PostgreSQL, Sybase,
• Resolved critical Qlik Sense mashup performance bottlenecks for
MongoDB, Impala
large user base.
Languages: SQL, PL/SQL, Python, JavaScript, TypeScript, Java, C++
Tools: Angular, Node.js, Git, Jenkins, Selenium Unitask
Data Engineering: ETL Design, Data Modeling, Governance, OBI Team Lead | Dec 2018 - Mar 2020
Performance Tuning, OLAP Cubes • Led OBI team delivery, support operations, and customer
communications.
EDUCATION • Owned DWH and OBIEE design/development, including dashboards
and OTBI.
Master's Degree in Applied Mathematics, Dnipro National University
• Multi projects/customers development and support
of Railway Transport
CERTIFICATIONS Luxoft
OBI Tech Lead / Senior Developer | Jul 2015 - Nov 2018
• Modern Data Management, DWH Fundamentals, Git
• Led hiring, onboarding, mentoring, and technical solution reviews.
• JavaScript Development, TypeScript, NodeJS, Angular 2
• Built automation to verify large financial data arrays for Deutsche
• Oracle 11g SQL, PL/SQL Language Basics, Effective use of Indexes
Bank warehouse.
• OBIEE development
• Integrated BI stack with Tableau, Angular, and JavaScript web
applications.
Allo Ltd
Oracle PL/SQL & BI Developer | May 2011 - Jun 2015
• Designed and tuned Oracle-based data warehouse architecture.
• Automated ETL from Oracle JDE, MS SQL Server, and 1C into
centralized BI warehouse.
• Built transformations, aggregations, OLAP cubes, dashboards, and
BI Publisher reporting.
Senior BI & Data Engineer
Location: Varna, Bulgaria
Experience: 26 years | English (Advanced), Ukrainian (Native)
SUMMARY PROFESSIONAL EXPERIENCE
Expert Data Professional with over two decades of experience in Allane SE (ex. SIXT-Leasing)
architecting and deploying enterprise-grade BI solutions. Proven Senior BI Engineer | Apr 2020 - Present
track record in building scalable AWS Cloud BI platforms from • Cloud Business Intelligence system for Allane SE
scratch using serverless architectures and leading international • Architected and established an AWS-based data and reporting
teams. Specialized in end-to-end data lifecycle management to platform from scratch for 1000+ users.
enhance decision-making and ensure compliance. • Developed automated ETL pipelines with AWS Glue and Lambda for
event-driven processing.
TECHNICAL SKILLS • Implemented Step Functions for orchestration of distributed data
AWS: RedShift, Glue, Lambda, Step Functions, S3, EC2 workflows.
BI: Qlik Sense, Oracle OBIEE, Tableau, Crystal Reports • Delivered 5 major BI applications for controlling (Margin, P&L, 360
Management View).
Databases: RedShift, Oracle, MS SQL, PostgreSQL, Sybase,
• Resolved critical Qlik Sense mashup performance bottlenecks for
MongoDB, Impala
large user base.
Languages: SQL, PL/SQL, Python, JavaScript, TypeScript, Java, C++
Tools: Angular, Node.js, Git, Jenkins, Selenium Unitask
Data Engineering: ETL Design, Data Modeling, Governance, OBI Team Lead | Dec 2018 - Mar 2020
Performance Tuning, OLAP Cubes • Led OBI team delivery, support operations, and customer
communications.
EDUCATION • Owned DWH and OBIEE design/development, including dashboards
and OTBI.
Master's Degree in Applied Mathematics, Dnipro National University
• Multi projects/customers development and support
of Railway Transport
CERTIFICATIONS Luxoft
OBI Tech Lead / Senior Developer | Jul 2015 - Nov 2018
• Modern Data Management, DWH Fundamentals, Git
• Led hiring, onboarding, mentoring, and technical solution reviews.
• JavaScript Development, TypeScript, NodeJS, Angular 2
• Built automation to verify large financial data arrays for Deutsche
• Oracle 11g SQL, PL/SQL Language Basics, Effective use of Indexes
Bank warehouse.
• OBIEE development
• Integrated BI stack with Tableau, Angular, and JavaScript web
applications.
Allo Ltd
Oracle PL/SQL & BI Developer | May 2011 - Jun 2015
• Designed and tuned Oracle-based data warehouse architecture.
• Automated ETL from Oracle JDE, MS SQL Server, and 1C into
centralized BI warehouse.
• Built transformations, aggregations, OLAP cubes, dashboards, and
BI Publisher reporting.
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The candidate's resume is posted at https://www.work.ua/resumes/18170010/