michalstefanow

Solana Blockchain Developer

With 14 years of experience, I specialize in blockchain backend development and full-stack solutions, utilizing technologies such as Solidity (Ethereum), Rust (Solana), Bitcoin Core, Web3.js, React/Next.js, Node/Express, and AWS/Docker/Kubernetes. I have successfully launched numerous decentralized applications (dApps) and smart contracts for NFTs, DeFi protocols, and meme-token projects across Ethereum, Solana, and Bitcoin blockchains. I’ve worked in Agile environments, contributing to all phases of the SDLC, and have extensive experience in backend development, cross-chain integrations, and security audits. Known for excellent communication skills, I have mentored team members, fostering collaboration and driving innovative solutions in the blockchain, DeFi, and fintech industries.







Experience: 4 years

Yearly salary: $80,000

Hourly rate: $50

Nationality: 🇬🇧 United Kingdom

Residency: 🇬🇧 United Kingdom


Experience

Lead Bitcoin Developer
Hausofhats
2024 - 2025
Ordinal Raffle is a platform that allows users to create and participate in raffles using Bitcoin Ordinals. Users can create their own raffles, set the rules, and invite others to join. The platform uses most effective method to ensure transparency and fairness in the raffle process.
Senior bitcoin developer
Ordinal Genesis
2024 - 2024
Ordinal Genesis team support Ordinal Mint, Create Ordinal Collection, Ordinal Raffle, Rune Claiming Features. App support XVerse, Unisat and Leader Wallets so users can use any wallet. Especially used bitcoinjs lib for build app backend(swap ordinals, send rune tokens to multi users in one tx etc).
software engineer
Spiral Software
2021 - 2024
Developing custom UI for a complex web application in HTML5, JavaScript, CSS. Using full Microsoft stack: ASP .NET, C#, VB, Visual Studio, TFS, SQL Server, IIS. Creating Selenium, NUnit and QUnit tests
software engineer
Qualcomm
2020 - 2021
Created internal web apps using Angular 1.x and Ionic framework. Troubleshooting existing apps (jQueryMobile, Android, iOS, Phonegap). Implemented various performance, accessibility, cross-device fixes
javascript developer
Microsoft
2019 - 2020
During my time at Microsoft I was working on three independent projects: Feedback platform for newly released products. Redesigning new internal website using parallax scrolling. Integration of an internal library as Microsoft Office add-on
react developer
National Theatre
2018 - 2018
Developing a booking widget allowing users to specify a location, production name, venue and redirecting to the checkout page. Technologies used: React, MobX, HTML5, CSS3, ES6
hybrid developer
Pillar Project
2018 - 2019
Developing a mobile wallet (hybrid mobile app) with Ionic (Angular 2) framework. Using node.js on the backend to query blockchain APIs.
web developer
British Gas
2017 - 2017
Developing complete overhaul of the existing app that has been in production for many years and still has the DOS-like look and feel.
web developer
TechSpec
2016 - 2016
Developing API platform dedicated to improving the way the world does business. Technology used: Next.js, Node.js, Typescript, MongoDB, Elastic Serach Engine, Magic Auth Library, google cloud speech package, AWS S3 bucket, intercom integrate, Email verification, etc.
software developer
Vodafone
2016 - 2017
I was involved in a few projects using some of the technologies that are relevant to my core skill set: React, MobX, SSR (server side rendering) and PWA web workers offline caching

Skills

backend
bitcoin
ethereum
front-end
mern
rust
solana
tailwind
vue
web3js
english