Алевтина

Alevtyna Korsun
Database Developer|SQL Developer
[open contact info](look above in the "contact info" section) Kyiv, Ukraine
Telegram: @aliakorsun
LinkedIn: [open contact info](look above in the "contact info" section)

Skills Summary
Databases & Data Warehousing: Snowflake, SQL / Database Developer with 6+ years of experience specializing in Snowflake, SQL
Microsoft SQL Server, Data Warehousing, Server, T-SQL, and SSIS. Experienced in database development, ETL/ELT, data
Data Marts integration, and data warehousing, with a strong focus on SQL development, stored
procedures, performance optimization, and data processing. Strong analytical and
Programming & SQL: SQL, T-SQL, Stored problem-solving skills with a proven ability to deliver scalable and maintainable data
Procedures, Query Optimization, Data solutions.
Transformation

ETL & Data Integration: SSIS, ETL/ELT, Data Experience
Integration, Data Migration, Data
Processing, Dagster Databas e Developer Nov 2019 - Present
VisiQuate Kyiv, UA, Ukraine
DB Change Management & CI/CD:
Liquibase, Jenkins, CI/CD, Database Developed and optimized complex SQL queries and stored procedures in Snowflake,
Deployment, Release Management implementing data transformation, processing, and business logic.
Designed and developed ETL/ELT processes to support data integration,
Version Control & CI/CD: Git, Jenkins, transformation, and loading into analytical data environments.
Liquibase Developed complex T-SQL stored procedures from scratch to support data
processing and ETL workflows.
Version Control: Git, VPN, Branching, Pull Developed, enhanced, and maintained SSIS packages, implementing T-SQL changes
Requests, Code Reviews, Merge and deploying updated ETL components.
Designed and maintained database tables, schemas, and other database objects to
Cloud & Storage: AWS S3, Azure Blob support ETL and data warehouse solutions.
Storage Performed SQL and ETL performance optimization, identifying bottlenecks and
implementing improvements to enhance processing efficiency and reliability.
Engineering: DB Development, ETL Performed DBA activities, including database maintenance, troubleshooting, and
Development, Performance Optimization, investigation of performance-related issues.
Troubleshooting,Data Quality Managed database schema changes and deployments using Liquibase, maintaining
database change files and coordinating their deployment across environments.
Tools & Methodologies: Jira, Agile/Scrum Managed and monitored ETL workflows through Dagster, ensuring successful
execution and investigating failures when required.
Utilized Jenkins CI/CD pipelines to deploy database and ETL-related changes across
development and higher environments.
Analyzed Jenkins execution logs, identified root causes of deployment and ETL
failures, and implemented corrective changes to SQL code and stored procedures.
Managed source code and database development through Git, including branching,
commits, pull requests, merges, and code reviews.
Worked with AWS S3 and Azure for managing files required for database and
deployment processes.
Conducted code reviews for fellow engineers, ensuring adherence to development
standards and code quality.
Collaborated with cross-functional teams to translate business requirements into
robust and scalable database and data integration solutions.

Education
Ingegneria matematica - Master's Degree
Università degli Studi dell'Aquila (MathMods Joint Master’s Degree
Programme (Erasmus+))
2018 - 2019 L'Aquila, Italy
Faculty of Mathematics and Informatics - Master's Degree
V.N. Karazin Kharkiv National University
2013 - 2019 Kharkiv, Ukraine