- SQR token which was listed in Bibyt - Claim smart-contract to distribute that token to 50K users during first day (stored 4M$) of TGE and indexers that decoded up to 100 tps - Deposit smart-contract to receive that token (1M$ were deposited) through custodial and non-custodial way - Staking smart-contracts (1M totally) for different pools - Signature service for creating signatures authorizing transactions on smart contracts (1500 rps) - Admin panel which manage different Indexer configurations online ------------------------------------------------------ Front: React.js, Next.js, Mobx, Material UI Back: Node.js, Fastify.js, Moleculer, NATS, PostgreSQL, Solidity

- developed several GameFi and NFT projects on Polygon - implemented staking native tokens on Solana, The Graph, Near and Tron chains - wrote custom Ledger adapters for Solana and Tron chains - control validator for Tron chain ------------------------------------------------------ Front: React.js, Next.js, Mobx, Material UI Back: Node.js, Fastify.js, REST, PostgreSQL, Solidity

Teamwork on various projects; - multichain explorer https://ankrscan.io - farming and lending tokens https://app.onx.finance - frontend of multi-rpc infrastructure https://www.ankr.com/rpc ------------------------------------------------------ Front: React.js, Next.js, Redux Back: Node.js, Fastify.js, PostgreSQL, Solidity

- work on different microservices for Google Analytics and cryptocurrency rates - cashback service with Stripe payments - work on different microservices for Google Analytics and cryptocurrency rates ------------------------------------------------------ Back: Node.js, Fastify, MongoDb, Solidity DevOps: Kubernetes, AWS

Role: 3/4 - TeamLead Front-end, 1/4 - Backend developer - manage frontend-developer team working on projects using blockchain technology - created 2 projects to test UI and API for QA team - created UI-library for sharing components between projects - SSR-project using Next.js framework ------------------------------------------------------------------- Front: React, MobX/Redux, Saga, TypeScript, Stylus, Webpack, Selenium, Jest, styled-components Back: Node.js, Nest.js, MySql, PostgreSql UI-components: Grommet, Material UI DevOps: Jenkins, Docker. Tools: Gitlab, Jira

- web ERP/BI-project for selling for products of company - integrational project of data transfer from SAP to Oracle Oracle Siebel CRM ------------------------------------------------------------------- Back: C#, LINQ, MSTest, WPF (MVVM), ASP.NET MVC, WebApi, EF, Powershell DB: MS SQL (Procedures, SSIS-packets, Reporting Services, OLAP)

- web and desktop-projects ------------------------------------------------------------------- Visual C++ 6, MFC (Multithreading), COM, DCOM, ActiveX