Andrii Leonets
Ukraine
Summary
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RockstarAndrii Leonets is a Senior Java Developer with 8 years of experience building and evolving cloud-native microservice architectures, predominantly on AWS Kubernetes, for domains ranging from public transportation systems to ETL/data-integration platforms. He has a strong backend focus—designing services, building and refactoring connectors, and implementing robust integration and end-to-end testing—while also leading migrations and plugin development that preserved complex integrations. As an active contributor to the popular Airbyte open-source project, he has improved JDBC and BigQuery connectors by fixing subtle data-type and nested-array issues and adding comprehensive tests. Colleagues rely on him for pragmatic solutions that bridge legacy systems (Oracle/Avaloq) and modern REST/Kafka-based workflows, and he brings hands-on leadership from earlier team-lead roles through to current senior engineering responsibilities.
9 years of coding experience
11 years of employment as a software developer
Ukrainian, English
Github Skills (9)
javas10
jdbc10
mysql10
data-integration10
java10
bigquery9
etl9
data-engineering8
sql8
Programming languages (2)
Github contributions (5)
airbytehq/airbyte
Jun 2021 - Dec 2022
Open-source data movement for ELT pipelines and AI agents — from APIs, databases & files to warehouses, lakes, and AI applications. Both self-hosted and Cloud.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:111 reviews, 106 commits, 87 PRs in 1 year 6 months
Contributions summary:Andrii contributed to the data integration platform, focusing on improving JDBC source connectors. Their work involved fixing issues with data type handling, specifically addressing unexpected long integer values in JDBC sources and implementing a comprehensive data type test for the MySQL source. They also implemented and refined functionality within the core integration framework. The user further enhanced the project by contributing to the BigQuery data integration, which included addressing nested array handling.
aiai-agentdatabasedatabaseselt
DoNotPanicUA/main
Aug 2017 - Jul 2018
Contributions:20 pushes, 1 branch in 11 months
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