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Dmytro Zhabskyi [open contact info](look above in the "contact info" section)
Poltava city
Database Developer

Summary
Database Developer with 3+ years at a large retail company, working with MS SQL Server and PostgreSQL. Experienced
in T-SQL, stored procedures, execution plan-based query optimization, and ETL/CDC pipelines in Apache Airflow.
Migrated data between servers and built REST API-backed integrations connecting ERP, POS, CRM. Started in L1/L2
technical support, which gave me a solid understanding of production systems, incident response, and reliability.
Looking to grow in Data Engineering.

Skills
Databases Programming Data Engineering
MS SQL Server, PostgreSQL T-SQL, Python, Bash, PascalScript, Apache Airflow, ETL, CDC, data
Java (Spring) migration
Other
Linux , Redgate, Jira, Git, GitHub,
Postman, REST API, FastReport

Work Experience

Database Developer
Avrora, Poltava November 2023 – Present
• Work on several projects in parallel, with tasks tracked in Jira: ERP system, new POS client, DataSync (data
synchronization, data transfers, Airflow) and Mobile (integrations, API endpoint logic).
• Developed T-SQL stored procedures for a standalone POS client: synchronized its PostgreSQL database with
the central MS SQL Server via REST API for sales, returns and other retail operations.
• Built ETL pipelines in Apache Airflow, including CDC-based data synchronization between servers.
• Migrated ~1 billion rows from a live archive server to the analytics server.
• Optimized slow stored procedures using execution plans: cut lookup on the archive server from up to 10
minutes to under 1 minute (10x faster).
• Developed stored procedures backing REST API endpoints and tested them with Postman.
• Designed a new type of B2B certificates, built a generation tool for business clients and defined the rules for
crediting funds.
• Integrated the ERP with the CRM/TeamLink tasks system, and Telegram/Microsoft Teams notifications.
• Created and maintained SQL Server Agent jobs and stored procedures for importing data from Excel files.
• Configured sales promotions and created/maintained FastReport print forms.

Technical Support Specialist L2 (ERP GMS)
Avrora, Poltava June 2023 – November 2023
• Maintained stable operation of MS SQL Server and GMS applications across 1,500+ workstations; troubleshot
issues at store and individual user level.
• Monitored incidents with Redgate and dashboards; resolved corrupted receipts on POS terminals.
• Performed database backups and restores to maintain data integrity.
• Developed and optimized SQL triggers, stored procedures and scheduled jobs.

• Supported the integration between the ERP and other systems.
• Handled night on-call shifts, resolving incidents during overnight inventory counts and server maintenance
jobs.
• Wrote Bash and Python scripts to automate routine tasks (terminal connection details, cash session logout,
search of print forms by referenced tables).

Technical Support Specialist L1
Avrora, Poltava March 2023 – June 2023
• Diagnosed and resolved hardware and software issues for end users.
• Administered operating systems and enterprise applications.
• Handled IT equipment deployment, asset management and inventory tracking.

Internet Network Installer
Kyivstar, Romny November 2020 – January 2022
• Installed and configured internet networks for residential and business clients.
• Diagnosed connectivity issues and configured routers, modems and other network equipment.

Education
Master's degree in Systems Analysis and Management
Kharkiv National University of Radio Electronics Graduated: 2025

Bachelor's degree in Computer Science and Technology
Kharkiv National University of Radio Electronics Graduated: 2024

Associate Degree in Computer Engineering
Romny Professional College of Kyiv National Economic University Graduated: 2021

Languages
• Ukrainian – Native
• English – B1 (Intermediate)