I’m a data professional with over 20 years of experience turning complex data into actionable insights. I design scalable data warehouses, optimize ETL/ELT processes, and tune databases to deliver fast, reliable analytics across industries. I enjoy building dashboards and dashboards-driven decision support that matter for business outcomes. I thrive in cross-functional teams, communicate clearly with non-technical stakeholders, and keep code in Git repositories to maintain quality and reproducibility. My toolkit spans MSSQL, Oracle, Teradata, AWS, Tableau, Power BI, Python, and Excel, and I’m passionate about mentoring others and sharing knowledge to lift the whole organization.…

Alex Emelianov

PRO

I’m a data professional with over 20 years of experience turning complex data into actionable insights. I design scalable data warehouses, optimize ETL/ELT processes, and tune databases to deliver fast, reliable analytics across industries. I enjoy building dashboards and dashboards-driven decision support that matter for business outcomes. I thrive in cross-functional teams, communicate clearly with non-technical stakeholders, and keep code in Git repositories to maintain quality and reproducibility. My toolkit spans MSSQL, Oracle, Teradata, AWS, Tableau, Power BI, Python, and Excel, and I’m passionate about mentoring others and sharing knowledge to lift the whole organization.…

Available to hire

I’m a data professional with over 20 years of experience turning complex data into actionable insights. I design scalable data warehouses, optimize ETL/ELT processes, and tune databases to deliver fast, reliable analytics across industries. I enjoy building dashboards and dashboards-driven decision support that matter for business outcomes.

I thrive in cross-functional teams, communicate clearly with non-technical stakeholders, and keep code in Git repositories to maintain quality and reproducibility. My toolkit spans MSSQL, Oracle, Teradata, AWS, Tableau, Power BI, Python, and Excel, and I’m passionate about mentoring others and sharing knowledge to lift the whole organization.

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Language

English
Fluent
German
Beginner

Work Experience

Lead Data Consultant at Bayer AG, Sunrise AG, Distributed Ltd, UK & Switzerland
September 1, 2020 - Present
Specialized in optimizing legacy SQL code for better performance and maintainability. Conducted performance tuning on large-scale AWS-hosted MS SQL Server databases. Analyzed execution plans, implemented indexing strategies and stored procedures review while leveraging MS Query Store to achieve over 12x improvement in query performance and significantly reducing CPU usage. Managed data quality assurance and sales forecasting, providing insights that enhanced strategic decision-making. Designed a comprehensive sales performance dashboard with daily, weekly, and monthly views, including high-traffic periods like Black Friday. Automated reporting workflows and supported fraud detection using automated cleansing, auditing, and validation mechanisms.
Senior Data Analyst & Architect at WorldPay, London
July 1, 2013 - September 1, 2020
Managed post-EL processes to ensure seamless and accurate data integration. Designed a DWH model to process interchange and scheme fees from multi-million daily transactions. Developed customizable invoicing processes for various customer tiers. Automated data cleansing, improved SQL performance, and optimized overall system efficiency.
Senior Data Analyst at AON, Dublin
July 1, 2011 - June 30, 2013
Consolidated data from international sources, ensuring quality through cleansing and validation. Designed and implemented automated analytics tools that boosted team productivity by over 10x.
Senior Developer & Data Analyst at Coretime, QMS Software, WBT Systems, Dublin
January 1, 2000 - January 1, 2011
Held senior roles across software development and data analytics functions. Developed robust reporting and analytical solutions using enterprise tools.

Education

Master of Computer Science at Altai State Technical University
January 1, 1993 - January 1, 1998

Qualifications

IPMA Agile Level D certified
January 11, 2030 - December 8, 2025
Brent Ozar Fundamentals & Mastering courses: MS SQL Server optimization
January 1, 2022 - December 8, 2025

Industry Experience

Professional Services, Software & Internet, Financial Services
    paper Worldpay Client Invoice Architect

    • Designed a data warehouse model to process fees data from millions of daily transactions
    • Managed post-EL steps to ensure smooth and accurate data integration
    • Built flexible invoicing processes for different customer groups
    • Automated data cleansing, added QA checks, and improved SQL performance