Achieved: Developed a Role-Based Access Control (RBAC) microservice for user roles and policy management across all microservices, enhancing platform security and compliance. Rust Blockchain Project • Developed a custom token creation system using Rust. • Implemented smart contract logic for token issuance and management. • Interacted with the Solana blockchain to deploy and test token transactions. Crypto exchange platform (www.quickex.io) • Involved in the developing micro services in Golang. • Supervise team of 7 engineers across different countries and 5 time zones • Developed microservice architecture currently supporting 3 products. • Interact with tron, etherium and other blockchain ecosystems. • Interact with crypto exchanges APIs (Binance, KuCoin, Coinbase, etc) • Involved in maintaining smarts contracts in Solidity • Involved in writing RBAC micro service for maintaining user roles and policies across all mircro services. B2B CRM for clinics (www.sxope.com) • Involved in developing API applications with DDD + CQRS design patterns. • Participated in development with K8S and configuring pods for needs. • Involved in managing Google Cloud infrastructure • Took part in developing backend for mobile applications in PHP • Worked with ANTLR 4 to parse the code. Create/fix grammar files (.g4) to update c# grammar up to 9.0 version. • Worked with Firebase Messaging/APNS for mobile apps (mostly iOS) • Involved in testing frontend via Cypress • Managed queues via RabbitMq • Dealt with react/python projects which was a new technology for me. • Took part in integration neural networks in python • Involved in managing droplets via DigitalOcean

B2B portal for gas and oil company (www.irkutskoil.ru) • Involved in the development of web portal with lots of legacy code • Involved in rewriting monolith platform into Python micro services. • Developed new modules with lots calculations and graphics • Implemented the ORM classes instead of multiline queries which improved code’s readability • Integrated a tab management system which simplified adding new tabs with certain fields and filters • Fixed critical bugs that crushed the portal • Involved in developing golang micro services for web scrapping

B2C application for influencers (www.fanzoone.com) • Add parsing microservices in python. • Add integration with social media like Facebook and Instagram • Involved in working with payment gateways • Involved in developing API for mobile applications • Involved in maintaining E-commerce applications written in PHP • Involved in developing backend APIs for mobile applications • Writing new features according to tasks