Ekaterine Tarkhnishvili
Verified Expert in Engineering
SQL Developer
Rome, Metropolitan City of Rome, Italy
Toptal member since August 26, 2021
Ekaterine, a data engineer/analytics engineer, has 6+ years of experience designing data architectures, dimensional models, and production-grade data pipelines using Databricks, PySpark, and DBT. She specializes in translating complex business logic into multi-layered data systems that power executive reporting and operational decision-making. Ekaterine's background also includes BI modernization, data quality improvement, and cross-functional collaboration across the US and EU markets.
Portfolio
Experience
- SQL - 5 years
- Data Build Tool (dbt) - 4 years
- Amazon S3 (AWS S3) - 4 years
- PySpark - 4 years
- Data Architecture - 3 years
- Microsoft Power BI - 3 years
- Tableau - 3 years
- Databricks - 2 years
Preferred Environment
Git, Microsoft Power BI, Tableau, Databricks, Snowflake, Data Build Tool (dbt), Amazon S3 (AWS S3), SQL, PySpark
The most amazing...
...challenge was designing enterprise data systems and transforming intricate business logic into reliable downstream analytical models.
Work Experience
Data Engineer
Rhythm Energy Inc
- Architected and maintained customer-centric dimensional data models in Databricks, supporting company-wide analytics and operational workflows.
- Designed PySpark transformation pipelines within a Databricks lakehouse architecture following a medallion data model, processing Parquet files stored in AWS S3 to produce analytics-ready datasets.
- Collaborated with cross-functional stakeholders to redesign core data structures, improving reporting consistency, and reducing logic duplication across business units.
- Delivered dozens of executive-facing Tableau dashboards built on standardized data models, supporting company-wide reporting and decision-making.
- Implemented automated validation and reconciliation checks to proactively detect data inconsistencies and maintain high data quality standards across downstream reporting systems.
Senior BI Developer
Leader-bet Slot LLC
- Led a Bl modernization initiated by migrating QlikView reporting solutions to the Power BI environment.
- Designed and implemented a dimensional data warehouse in MySQL using a star schema approach, structuring fact and dimension tables to support scalable, performance-optimized analytics reporting.
- Performed structured data quality assessments and implemented transformation logic to improve reporting reliability.
- Replicated BI solutions across multiple tools to evaluate performance and usability differences.
Power BI Engineer
Panzura LLC
- Gathered data and created analysis based on company and industry needs.
- Set up data connections and scheduled refreshes in Microsoft Power BI.
- Created visualizations based on the business requirements and its wireframes.
Power BI Engineer
BCG - Gamma
- Developed complex paginated Power BI reports based on executive wireframes, using Azure Synapse as the primary data source.
- Designed advanced DAX calculations and optimized SQL views to enhance performance and reduce query execution time.
- Collaborated with consulting teams to deliver analytics solutions aligned with client-specific business requirements and reporting standards.
SQL Developer
MagtiCom Ltd.
- Developed PL/SQL procedures and packages to automate reporting workflows, and improve data processing efficiency.
- Created automated Oracle BI reports, ensuring data integrity and validation across multiple source systems.
- Built ETL processes using Oracle Data Integrator to extract, transform, and load data from heterogeneous systems.
- Conducted integrity checks and reconciliation processes to maintain reporting accuracy.
SQL Developer
Liberty Bank Georgia
- Developed complex SQL queries to generate business-critical analytical reports for internal stakeholders.
- Automated recurring reports using SQL Server Reporting Services and Microsoft Power BI to reduce manual effort.
- Optimized query performance through indexing strategies and structured query tuning.
- Collaborated with business teams to translate reporting requirements into scalable database solutions.
Experience
Data Engineer for Rhythm Energy Inc.
I have been one of the lead engineers in the latest data migration projects at Rhythm Energy. My role included gathering business requirements, setting up ETL processes, implementing data models, and testing the data.
Power BI App for Leader-bet Slot
I implemented a Power BI app consisting of slots, sport, casino, P&L statement, and HR portal reports based on the company requirements. This included tens of complex Power BI reports.
Education
Bachelor's Degree in Computer Science
San Diego State University - Georgia
Certifications
Microsoft Certified Professional
Microsoft
Skills
Libraries/APIs
PySpark
Tools
Microsoft Power BI, Jira, Tableau, Microsoft Excel, Git, Looker
Languages
SQL, Python, Snowflake
Platforms
Databricks, Amazon Web Services (AWS), QlikView, Azure Synapse
Storage
PL/SQL, MySQL, Oracle PL/SQL, PostgreSQL, SQL Server Reporting Services (SSRS), Microsoft SQL Server, Redshift, Amazon S3 (AWS S3)
Paradigms
Data-informed Visual Design
Other
DAX, Reporting, Data Analytics, Dashboard Design, Data Architecture, Data Modeling, Data Analysis, Oracle BI, Data Visualization, QA Testing, Data Build Tool (dbt)
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