Konstantin Maltsev Email & Phone Number

Belgrade, Serbia

• 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

St Petersburg, St Petersburg City, Russia

• 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

St Petersburg, St Petersburg City, Russia

• 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

St Petersburg, St Petersburg City, Russia

• 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