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Nikita Kozachevskyi

@nikitakozachevskyi

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Big Data Engineer and Data Analyst specializing in cloud migration, ETL, and scalable data pipelines.

Ukraine

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What I'm looking for

I seek roles building and optimizing cloud data platforms and scalable ETL/ELT pipelines, collaborating with stakeholders and driving data quality and analytics.

I am a Big Data Engineer and Data Analyst with hands-on experience migrating data platforms to cloud warehouses and building scalable ETL/ELT pipelines for analytics. I have delivered projects in livestock analytics, banking customer data platforms, retail cloud migrations, and online gaming financial analytics.

Technically, I design and implement data pipelines and transformations using Apache NiFi, Apache Flink, DBT, Snowflake, SQL Server, Hadoop, Spark, and Python, and I optimize SQL procedures and data models to ensure data quality and performance. I have applied web-scraping automation with Beautiful Soup and Selenium and worked with PostgreSQL, MySQL, Oracle, and Snowflake across multiple projects.

I collaborate with stakeholders to translate business needs into technical solutions, document mappings and processes, mentor junior team members, and drive improvements in data reliability and operational efficiency.

Experience

Work history, roles, and key accomplishments

Big Data Engineer

AM-BITS

Nov 2023 - Sep 2025 (1 year 10 months)

Led cloud migration and big-data processing for livestock analytics, designing ETL pipelines and data models on AWS and Snowflake to enable scalable processing and improve data-driven insights.

Apache NiFi Apache Flink Snowflake PostgreSQL MySQL SQL Server DBT Python SQL

Data Analyst

Raiffeisen Bank

Dec 2022 - Nov 2023 (11 months)

Developed a Customer Data Platform consolidating customer data, built logical data models and SQL code, and improved data quality to support analytics and stakeholder decision-making.

SQL Data Modeling Data Quality Git Jira Confluence Excel

Data Engineer

SoftServe

Aug 2021 - Dec 2022 (1 year 4 months)

Migrated a Canadian retailer from Hadoop to Snowflake, built and maintained data warehouses and ETL/ELT pipelines, and implemented database structures to improve scalability and performance.

Snowflake Hadoop Spark SSIS SQL Server Data Warehousing JSON XML ETL Git

Data Analyst

FavBet

Sep 2018 - Nov 2022 (4 years 2 months)

Provided financial and event-data analysis for online gaming (Cybersport), created efficient calculation solutions, optimized processes, and trained new employees to improve operational accuracy.

Financial Analysis Event Data Excel Process Optimization Mentoring Data & Research SQL Reporting

Education

Degrees, certifications, and relevant coursework

Kiev National University of Trade and Economics

Master of Science, Economic Cybernetics

2017 - 2020

Completed a Master of Science in Economic Cybernetics with coursework combining economics, data analysis, and computational methods.

Kiev College of Tourism

Secondary Special Education, Computer Systems Maintenance

2012 - 2017

Completed a Secondary Special Education program focused on maintenance of computer systems, covering hardware, software, and system administration fundamentals.