exzender
Mid Senior Backend Developer
Highly accomplished Senior Backend Developer with over 5 years of expertise in blockchain technologies, specializing in scalable solutions using node.js. Proven track record in developing efficient and robust backend systems, with extensive experience in creating solutions for various blockchains. Recognized for transforming a small Telegram bot into a universal SDK for seamless communication with different blockchains.
Experience: 5 years
Yearly salary: $60,000
Hourly rate: $30
Experience
Backend Blockchain Developer (Node.js)
Callisto Enterprise 2021 - 2023
Developed blockchain featured Telegram and Discord bots, RESTAPIs, SDK supporting multiple blockchains (Bitcoin, Polka.dot, EOS, EVM, Solana, Stellar,Aptos, Sui, TON), NPM package add-on for Tatum SDK. Proficient in Node.js (js/ts), MongoDB, Redis, Telegram BotAPI, various blockchain API/SDKs. RESTAPI building (Koa.js). Led the development of Telegram bots with ~150k users and >100 groups (@AbsoluteWalletBot & @CrypFolio_bot). Created APIs for internal bot management and external SDK usage. Developed a Blockchain SDK supporting 14 different blockchain types.
Freelance Blockchain Developer
Reosc.io, Callisto Network, Trust Wallet 2018 - 2021
Developed Telegram and Discord bots using Node.js, MongoDB, Ethereum, and Binance Chain. Proficient in Web3.js and experienced in working with databases such as MongoDB and Redis. Deployed applications on platforms like Heroku and AWS EC2 for optimal performance. Contributed to Telegram bots (@callistotip_bot, @TwtTipBot).
Freelance Qt C++ Developer
LLC "Samokart" 2017 - 2018
Utilized Qt C++ and SQLite for enhancing a public transport map routes app with GPS-based advertisement features.
Team Lead | Delphi/Oracle
LLC "NIS-21" 2001 - 2016
Progressed from Junior Developer to Team Lead, overseeing key projects. Utilized Oracle, PL/SQL scripting, and client software development using SQL, Delphi, XML, and XSLT.
Skills
api
evm
mongo
solidity
web3js
node
english