Алевтина

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

PROFILE

SQL / Database Developer with 6+ years of experience specializing in Snowflake, SQL Server, T-SQL, and SSIS.
Experienced in database development, ETL/ELT, data integration, and data warehousing, with a strong focus on
SQL development, stored procedures, performance optimization, and data processing. Strong analytical and
problem-solving skills with a proven ability to deliver scalable and maintainable data solutions.

WORK EXPERIENCE

Nov 2019 – Present Database Developer, VisiQuate · Kyiv, UA, Ukraine
• Designed and maintained Snowflake and SQL Server schemas, tables, views, and stored
procedures supporting enterprise data warehouses and data marts.
• Developed complex SQL/T-SQL transformations and ETL/ELT workflows across
STAGE, INTMD, TMP, DM, and MART layers, with hands-on experience in SSIS.
• Improved ETL reliability by implementing incremental loading, file deduplication, and
safeguards for historical recalculations, preventing duplicate processing and unintended
data loss.
• Monitored and troubleshot production ETL workflows orchestrated with Sonata and
Dagster, resolving failed loads, data quality issues, and SQL performance bottlenecks.
• Managed database deployments and version-controlled changes using Liquibase,
Jenkins, and Git, while integrating AWS S3 and Azure into data ingestion and delivery
workflows.

EDUCATION

2018 – 2019 Ingegneria Matematica - Master's Degree, Università degli Studi dell'Aquila
(MathMods Joint Master’s Degree Programme (Erasmus+)) · L'Aquila, Italy
• Specialized in Mathematical Engineering (Ingegneria Matematica), with a focus on
mathematical modelling, numerical methods, and applied mathematics.
• Developed strong analytical and computational problem-solving skills through
numerical analysis, modelling, and simulation of complex systems.

2013 – 2019 Faculty of Mathematics and Informatics - Master's Degree, V.N. Karazin
Kharkiv National University · Kharkiv, Ukraine
• Specialized in Mathematics and Informatics, combining a strong mathematical
foundation with programming and computational methods.
• Developed analytical, problem-solving, and programming skills applicable to data
processing, algorithmic tasks, and software development.

SKILLS

Databases & Data Snowflake • Microsoft SQL Server • Data Warehousing • Data Marts
Warehousing
Programming & SQL SQL • T-SQL • Stored Procedures • Query Optimization • Data Transformation

ETL & Data SSIS • ETL/ELT • Data Integration • Data Migration • Data Processing • Dagster
Integration
DB Change Liquibase • Jenkins • CI/CD • Database Deployment • Release Management
Management & CI/CD

Version Control & CI/ Git • Jenkins • Liquibase
CD
Version Control Git • VPN • Branching • Pull Requests • Code Reviews • Merge

Cloud & Storage AWS S3 • Azure Blob Storage

Engineering DB Development • ETL Development • Performance Optimization •
Troubleshooting • Data Quality

Tools & Jira • Agile/Scrum
Methodologies