Developed several blockchain-related projects from scratch, primarily using C++• Designed and implemented back-end services, including APIs, microservices, and database schemas for high-performance block explorer tailored for Ethereum-like blockchains• Built an Ethereum Virtual Machine (EVM) for non-modifying transactions that is 70% faster than the one implemented in existing Ethereum clients (Geth, Erigon, etc.)• Contributed to the development of an advanced arbitrage system for decentralized exchange (DEX) pools, including Uniswap V2/V3, implementing the computing part and interaction with smart contracts• Collaborated closely with the DevOps team to design an efficient system architecture, ensuring seamless integration and deployment of blockchain solutions into the Kubernetes cluster• Conducted technical interviews and mentored new team members, providing guidance on technical tasks and best practices

Implemented high-quality financial strategies across a variety of asset classes in global markets• Designed and developed various ETL components for processing large amounts of data of various formats• Built an internal tool using Python that automated some testing routine, leading to a 10% increase in team productivity• Collaborated with an international team for continuous improvement of the entire system

Developed and maintained high-load 3G/4G/5G core network services using C++• Maintained and improved Diameter Routing Agent (DRA) service through code optimization, resulting in a 30% reduction in request processing time• Built Authentication Server (AUSF) service using MySQL and Redis for 5G core network from scratch • Conducted unit testing using GTest library for C++ resulting in a 10% reduction in code errors

Developed document-oriented desktop applications for Windows using C++• Developed a desktop client using Qt framework for accounting for various contracts, invoices, companies, employees, etc.• Maintained and improved the internal framework for working with PostgreSQL and some specific data structures, fixing bugs and improving code readability• Collaborated directly with the CTO on system design, contributing to the successful implementation of key features