Led a team of 5 backend developers in the design, development, and maintenance of critical software solutions.
* Spearheaded the development of KyivID (id.kyivcity.gov.ua), a centralized OAuth 2.0 authorization server providing single sign-on (SSO) for municipal services used by Kyiv citizens.
* Engineered a dynamic data integration platform to unify and normalize records from diverse Ukrainian national registries into a single, configurable format.
* Built a multi-tenant SaaS CMS platform with features like comments, voting, and likes to accelerate the deployment of internal company projects.
* Executed complex data migrations between major application versions with significant schema changes while ensuring data integrity.
* Optimized application performance through systematic tuning and bottleneck analysis.
* Contributed to the development of the Municipal Registry and the next-generation Child Registry, while also providing production support for the existing version.