Serhii Olshanivskyi

Led engineering processes and technical direction for a high-load social platform product. Redesigned core system architecture to improve scalability, maintainability, and deployment reliability.

Built backend for a social network product for Google with AdSense functionality. Developed backend infrastructure for Terra Classic blockchain validator services and AirDAO blockchain infrastructure.

Implemented backend services for AI chat functionality integrated into the WorldCoin application. Developed backend architecture for a Mafia-style multiplayer game integrated into the WorldCoin ecosystem.

Led technical interviews, supported legacy systems maintenance, and participated in building new products from scratch. Designed scalable backend architectures using Node.js, OpenAI, Stripe, PostgreSQL, MongoDB, GraphQL, Google Cloud Platform, Nest.js, and Redis.

Built backend services for U.S. radio stations using Microfleet and RabbitMQ. Implemented CI/CD pipelines with Chef Workstation on Google Cloud Platform.

Built custodial cryptocurrency wallets for Ethereum and Polkadot blockchains using Nest.js, TypeScript, web3.js, polkadot.js, TypeORM, and PostgreSQL. Developed backend infrastructure and game-oriented microservices for a multi-game platform.

Delivered small frontend and backend projects for freelance clients.

Pursued a Bachelor's Degree in Computer Science at the National Technical University “Kharkiv Polytechnic Institute” from 2020 to 2025.

Studied Computer Science at ZUT Szczecin from 2019 to 2020.