Y.

Senior BI / Data Engineer
Location: PolandRate: €50 / hourLanguages: English (B2+), Polish (B1), German (A2)

Professional Summary

Senior BI and data engineer with 18+ years across DBA, data warehousing and business intelligence. I design and run relational databases, data warehouses and data lakes, build ETL pipelines, reports and dashboards, and handle large data migrations. Recent work centres on AWS and Azure — scalable pipelines, interactive dashboards, Python/Java, and applying LLMs (Bedrock, Claude) for forecasting and code conversion. Experience spans e-commerce, banking, healthcare, gambling and telecom.

Core Skills

Languages
Python, C#, Java, JavaScript, SQL / T-SQL, MDX, DAX
Databases
MS SQL, Oracle, PostgreSQL, MySQL, Redshift, Snowflake, DynamoDB, Redis; SSAS, SSRS, SSIS
AWS
Redshift, EC2, RDS, EMR, DMS, Glue, Lambda, Step Functions, SageMaker, Bedrock (Claude, Titan)
Azure
ADF, Synapse, Fabric Warehouse, One Lake, Power BI, PowerShell
DBA and BI
Performance tuning, replication, Always-On, partitioning, migrations; Power BI, QuickSight, Superset, Tableau, QlikView

Professional Experience

Amazon AWS — Senior Data / Database Engineer
2021 – Present
Data migrations platform — replication, migration and transformation across sources.
  • Ran database and ETL migrations to AWS; built Python automation tools to speed the process.
  • Designed data warehouses on PostgreSQL and Redshift; Glue (Spark) and Step Functions with monitoring.
  • Built pipelines on Airflow (dbt), Databricks and Snowflake; streaming with Kafka / Amazon MSK.
  • Applied LLMs (Bedrock Claude) for forecasting, tuning and automated code conversion; dashboards in QuickSight and Superset.
Tools: AWS DMS, Glue, Lambda, Redshift, Step Functions, Airflow/dbt, Databricks, Snowflake, Kafka/MSK, Python/Spark, Java
DBBEST — Senior DB / BI Engineer
2019 – 2021
  • MSSQL support for high-load systems: maintenance, troubleshooting and tuning.
  • Power BI reports, dashboards and dataflows; Azure infrastructure; PowerShell automation.
Tools: MSSQL (AG/HADR), SSIS, SSRS, Power BI, DAX, Azure (Synapse, ADF, Fabric)
ESCAPE — Senior DBA / Data / BI Engineer
2017 – 2019
  • Database maintenance and optimization; new databases, warehouses and Azure Data Lake.
  • Power BI dashboards and SSRS; monitoring and security (PRTG, SolarWinds).
Tools: MSSQL (AG/HA), SSIS, SSRS, Power BI, Azure DW/DB/MI, AWS (S3, EMR, Redshift)
CHI — Senior BI / DBA, Data Analyst, .NET Developer
2016 – 2017
  • Analytical stored procedures and SQL optimization; SSIS, SSRS and Power BI.
  • Big-data transformation (Hadoop, Hive, Spark MLlib); .NET / EpiServer extensions.
Tools: MSSQL, SSIS/SSRS, Power BI, QlikView, .NET/C#, Hadoop (HBase, Hive, Spark)
TEAM INTERNATIONAL — Senior DB / BI, .NET Developer
2013 – 2016
  • Database projects, SSIS/ETL pipelines and performance tuning; Azure PowerShell automation.
  • Optimized SQL for Netezza and Oracle PL/SQL; resolved lock and deadlock issues.
Tools: MSSQL, SSIS, Azure DB, Oracle PL/SQL, Netezza, Vertica, .NET/C#

Education & Certifications

Master's in Computer Engineering — National Aerospace University (Kharkiv Aviation Institute)

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