Giorgi Kharaishvili, Developer in Tbilisi, Georgia
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Giorgi Kharaishvili

Verified Expert  in Engineering

Bio

Giorgi is a data engineer with more than five years of experience working on ETL, data warehousing, and data visualization. He has been working as tech lead of the business intelligence department in Georgia's biggest telecommunication company Magticom, where he has implemented multi-source DWH and several BI projects. Giorgi has excellent communication skills and is passionate about helping businesses create value from their data.

Portfolio

Sysdyne Technologies LLC
ETL Tools, Business Intelligence (BI), ETL, Communication, DevOps, Azure...
MagtiCom
Data Warehousing, ETL, Agile Project Management, Technical Leadership...
MagtiCom
Data Warehousing, ETL, Oracle Data Integrator (ODI), Data Warehouse Design...

Experience

  • ETL - 9 years
  • Data Engineering - 9 years
  • Data Processing - 5 years
  • BI Reports - 5 years
  • Data Architecture - 4 years
  • Data Warehousing - 4 years
  • Data Visualization - 4 years
  • Snowflake - 4 years

Availability

Full-time

Preferred Environment

Windows, DataGrip, Slack

The most amazing...

...thing I've implemented is a complete BI project—from multi-source DWH to data visualization and predictive analytics.

Work Experience

BI and Analytics Engineer

2022 - 2023
Sysdyne Technologies LLC
  • Integrated data in the Snowflake database using the Fivetran platform from various sources, including Azure SQL and MongoDB.
  • Planned the warehouse architecture and developed ELT processes using DBT.
  • Created dashboards and analytical reports in Sigma, which used row-level security (RLS) and were embedded in the application. This resulted in the satisfaction of existing customers and increased interest from potential ones.
  • Worked with developers and business users to gather requirements and build insightful data visualizations.
  • Acted as a one-person team for an entire BI project, developing every area and managing all the related SaaS products.
Technologies: ETL Tools, Business Intelligence (BI), ETL, Communication, DevOps, Azure, Snowflake, MongoDB, Fivetran, Data Build Tool (dbt), SQL, Azure SQL Databases, SQL Server Management Studio (SSMS), Microsoft Power BI, Sisense, ELT, Design for Six Sigma (DFSS), Sigma.js, Microsoft SQL Server, Redshift, Apache Airflow, Dashboards, Dashboard Design, Embedded Analytics, Lean Six Sigma, Warehouses, Data Pipelines, Amazon Web Services (AWS), BI Reporting, Data Reporting, Sigma Data Visualization, dbt Cloud, Data Modeling, Looker Studio, Looker

Head of Business Intelligence Department

2020 - 2021
MagtiCom
  • Acted as a senior data analyst performing daily tasks, including implementing the data warehouse, ETL, database development, data visualization, and designing DB architecture.
  • Led and managed a team of six people, trying to improve department efficiency and the satisfaction of team members. I used Jira for task management.
  • Collaborated with business users and played an essential role in company-wide projects.
Technologies: Data Warehousing, ETL, Agile Project Management, Technical Leadership, Data Visualization, Teamwork, Database Architecture, Data Processing, Data Engineering, Relational Databases, Data Modeling, Dimensional Modeling, SQL, Data Processing Automation, Automated Data Flows, BI Reports, Database Development, Oracle Data Integrator (ODI), Data Warehouse Design, IT Projects, Oracle Business Intelligence Enterprise Edition 11g (OBIEE), Communication, Oracle SQL Developer, Data Architecture, Windows, Slack, Pandas, Tableau, Oracle 12c, Oracle Performance Tuning, Oracle, ETL Tools, Microsoft Power BI, Tableau Server, Tableau Desktop Pro, Warehouses, Data Pipelines, Azure, Amazon Web Services (AWS), BI Reporting, Business Intelligence (BI), Data Reporting, Looker Studio, Looker

Senior Data Analyst

2018 - 2020
MagtiCom
  • Planned an ETL and data warehouse. Implemented data marts and tracked and improved data flow every day. Integrated data from various sources.
  • Implemented subject areas for OBIEE from DWH with the Snowflake schema approach. Helped business users work in BI and significantly optimized the time needed to get desired information for analytics.
  • Designed data architecture and all the processes in Oracle DB for several projects in the company.
  • Collaborated with vendors and consultancy teams from world-leading companies to provide a valuable benefit to our company.
  • Worked closely with the marketing team to drive tangible value for our business. Developed and executed innovative marketing campaigns that have boosted brand awareness, engagement, and revenue.
Technologies: Data Warehousing, ETL, Oracle Data Integrator (ODI), Data Warehouse Design, Data Visualization, IT Projects, Oracle Business Intelligence Enterprise Edition 11g (OBIEE), Data Architecture, Data Engineering, Relational Databases, Data Modeling, PostgreSQL, Dimensional Modeling, Python, SQL, Data Processing, Data Analytics, Excel VBA, QlikView, Data Processing Automation, Automated Data Flows, BI Reports, Database Development, Teamwork, Database Architecture, Communication, Oracle SQL Developer, Windows, DataGrip, Slack, SQL Server Analysis Services (SSAS), SQL Server Integration Services (SSIS), SQL Server 2012, Pandas, Tableau, Oracle 12c, SQL Loader, Oracle Performance Tuning, Oracle, ETL Tools, Microsoft Power BI, Dashboard Development, ELT, Databases, Stored Procedure, PL/SQL, Data Analysis, Dashboards, Dashboard Design, Warehouses, Data Pipelines, BI Reporting, Business Intelligence (BI), Data Reporting, Looker Studio, Looker

Data Analyst

2016 - 2018
MagtiCom
  • Developed data using PL/SQL. Created and populated data cubes for simplified reporting and planned relevant database architecture.
  • Automated data processing, cleaning, and validation using PL/SQL and created reports for business users.
  • Built various dashboards using Microsoft Power BI.
  • Migrated data from MS SQL to Oracle using in-house tools.
  • Communicated directly to business users and made ad-hoc reporting for them.
  • Made data visualizations using QlikView and scripted VBA to import data in the desired format for business users.
Technologies: QlikView, Data Processing Automation, Automated Data Flows, BI Reports, Excel VBA, Database Development, Relational Databases, Data Modeling, Dimensional Modeling, Python, SQL, Data Processing, Microsoft Excel, ETL, Oracle Data Integrator (ODI), Data Warehouse Design, IT Projects, Oracle Business Intelligence Enterprise Edition 11g (OBIEE), Teamwork, Database Architecture, Communication, Oracle SQL Developer, Data Architecture, Data Engineering, Windows, DataGrip, Slack, PostgreSQL, SQL Server Analysis Services (SSAS), SQL Server Integration Services (SSIS), SQL Server 2012, Tableau, Oracle 12c, SQL Loader, Oracle Performance Tuning, Oracle, ETL Tools, Microsoft Power BI, Dashboard Development, Qlik Sense, Databases, PL/SQL, Stored Procedure, ELT, Data Analysis, Warehouses, Data Pipelines, BI Reporting, Data Reporting

Analyst

2015 - 2016
Philip Morris Georgia
  • Analyzed data and planned resources for a long supply chain.
  • Optimized existing planning files and their algorithms for better performance and more accurate results.
  • Made many presentations and various visualizations for management after merging and processing data from several sources.
Technologies: Data Visualization, Data Processing, Microsoft Excel, Data Analytics, Teamwork, Communication, Windows, Data Analysis

Experience

BI Project

I successfully implemented a comprehensive BI project, overseeing the end-to-end development of a data warehouse for the country’s largest telecommunications company. This included integrating diverse datasets, designing a robust infrastructure, and developing ETL processes with detailed tracking mechanisms.

To enhance data accessibility and usability, I created intuitive data visualization areas, making insights easily understandable for business users. This initiative improved efficiency across all departments, enabling them to communicate in a unified data-driven language. Additionally, I leveraged Oracle’s built-in machine learning algorithms to analyze customer data, leading to valuable insights and a higher retention rate.

As a key project member, I was the only team member involved in every stage—from initial discussions with the outsourcing consultancy team to execution—ensuring seamless coordination and successful implementation.

Portal for Countries' Communication Regulatory Reporting

The company makes reports for the country's communication regulatory commission.

Those reports are from all departments, with a wide variety of data and source types. Collecting those reports and checking them was difficult, and there has a high probability of mistakes.

I made a centralized system where users had different options for importing data. Some were automatically calculated, some were imported by excel, inserted with simple data entry, and others.

In case of changes, old data is kept for comparison.
Every report is only accepted after double-checking and approval of the supervisor.
Users are reminded if they have forgotten uploading or approving.

All data is centralized in one DB and is easily accessible.

Also, in the same web portal where data is integrated, there is a snowflake schema-based visualization part, which allows one to check data trends and find possible problems.

After all, this project made the process of high importance much more accessible and transparent.

Consolidate Data Visualizations from SSRS to OBIEE

After the company's acquisition, there was a need to transfer and consolidate reports and data visualizations from SSRS to OBIEE.

We learned data from a new company during the project and integrated data from MS SQL to Oracle. We transferred snowflake, star schema-based reports/visualizations, and reports from direct database queries.

Automated Consolidated Financial Reporting System

In response to manual data consolidation and reporting inefficiencies, we developed the Automated Consolidated Financial Reporting System to enhance efficiency, accuracy, and real-time insights.

Traditionally, financial reporting required gathering data from multiple sources, relying on manual input, and managing the complexities of Excel spreadsheets, which led to errors and inefficiencies.

Our solution replaces this cumbersome process with a streamlined, automated system that ensures data integrity, reduces manual effort, and provides dynamic Tableau visualizations for better decision-making. This transformation enables businesses to access reliable financial insights more efficiently, improving overall reporting processes.

Lead of BI Project

I led the end-to-end development of the BI infrastructure for a SaaS company operating as a one-person BI department. I integrated all data sources into Snowflake, designing and implementing ETL processes using Fivetran, API integrations, and dbt. I also ensured data quality by establishing rigorous validation and monitoring mechanisms, guaranteeing accuracy and consistency across all pipelines.

To drive data accessibility and insights, I built dashboards in visualization tools for both internal teams and external customers. Collaborating closely with business users, I developed dynamic and intuitive visualizations tailored to their needs. I also implemented user-based row-level security, embedding these dashboards into our website to provide secure and personalized analytics experiences.

Beyond visualization, I facilitated seamless data sharing by managing data exports and replications from Snowflake, ensuring stakeholders had the right data at the right time. By centralizing and optimizing the BI ecosystem, I empowered data-driven decision-making across the organization.

Education

2012 - 2016

Bachelor's Degree in Business Administration, IT Management

Free University of Tbilisi - Tbilisi, Georgia

Skills

Libraries/APIs

Pandas, Sigma.js

Tools

Tableau, Microsoft Power BI, Microsoft Excel, Oracle Business Intelligence Enterprise Edition 11g (OBIEE), DataGrip, Slack, Sisense, Tableau Desktop Pro, Qlik Sense, Apache Airflow, dbt Cloud, Looker

Languages

SQL, Snowflake, Excel VBA, Python, Stored Procedure

Paradigms

ETL, Business Intelligence (BI), Database Development, Dimensional Modeling, Agile Project Management, DevOps, Design for Six Sigma (DFSS), Automation

Platforms

Oracle, QlikView, Oracle Data Integrator (ODI), Windows, Azure, Amazon Web Services (AWS)

Storage

Database Architecture, Relational Databases, SQL Server 2012, Oracle 12c, SQL Loader, Data Pipelines, Oracle SQL Developer, PostgreSQL, Data Integration, SQL Server Reporting Services (SSRS), Microsoft SQL Server, SQL Server Analysis Services (SSAS), SQL Server Integration Services (SSIS), MongoDB, Azure SQL Databases, SQL Server Management Studio (SSMS), Databases, PL/SQL, Redshift

Industry Expertise

Lean Six Sigma

Other

Data Analytics, BI Reports, Data Engineering, Fivetran, Data Analysis, BI Reporting, Data Warehousing, Data Processing, Data Visualization, Data Processing Automation, Automated Data Flows, Data Warehouse Design, Data Architecture, Teamwork, Data Modeling, Oracle Performance Tuning, ETL Tools, Dashboard Development, Warehouses, Data Reporting, IT Management, IT Projects, Technical Leadership, Communication, Visualization, Data Build Tool (dbt), Tableau Server, ELT, Tax Accounting, Dashboards, Dashboard Design, Embedded Analytics, Sigma Data Visualization, Looker Studio, Snowpipe

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