salkovskyna

Development of Web3 projects \textbf{3 production projects developed from scratch with mongoDB and postgreSQL usage} Designed and setting up server architecture Development of an application for interaction with \textbf{Uniswap} on-chain liquidity pools. Interaction with API and sockets, data collection and storage Implementation of caching using Redis to store temporary transaction data, which reduced the load on the database and reduced API response time by 30 percent Single Development of anonymous crypto wallet VaultX backend server, supporting AML, sending transactions, receiving balances, etc. (reference trust wallet) Developing a crypto hosting application with access to a data center and payment using cryptocurrencies\textbf{Prod project} Writing and auditing smart contracts on solidity in Polygon and Arbitrum networks Mentored two new developers. Led to faster onboarding of staff to the project and improved code quality

PGSQL database optimisation \textbf{led to a 3x acceleration of database queries} Development of a microservice for exchange rates for spot and cash conversion for individuals and other banks Teamwork, writing tests and CI/CD