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I’m Michal Stefanow, a blockchain and backend engineer with over a decade of experience building secure, scalable platforms. At Onessus I led backend architecture and blockchain integration for Meme Dealer, focusing on security, performance, and reliability. I’m proficient with Bitcoin-native technologies, backend systems, and blockchain protocols, delivering end-to-end solutions using Node.js, Redis, RabbitMQ, and BitcoinJS. I’m passionate about advancing secure blockchain ecosystems and delivering real-world applications that prioritize security and scalability. I’m excited to contribute to a forward-thinking infrastructure team, leveraging my experience across fintech, gaming, and decentralized platforms to design robust, secure, and scalable systems that users can trust.…I’m Michal Stefanow, a blockchain and backend engineer with over a decade of experience building secure, scalable platforms. At Onessus I led backend architecture and blockchain integration for Meme Dealer, focusing on security, performance, and reliability. I’m proficient with Bitcoin-native technologies, backend systems, and blockchain protocols, delivering end-to-end solutions using Node.js, Redis, RabbitMQ, and BitcoinJS. I’m passionate about advancing secure blockchain ecosystems and delivering real-world applications that prioritize security and scalability. I’m excited to contribute to a forward-thinking infrastructure team, leveraging my experience across fintech, gaming, and decentralized platforms to design robust, secure, and scalable systems that users can trust.

Michal Stefanow

Web Developer, Full Stack Developer, Blockchain Developer, +2

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I’m Michal Stefanow, a blockchain and backend engineer with over a decade of experience building secure, scalable platforms. At Onessus I led backend architecture and blockchain integration for Meme Dealer, focusing on security, performance, and reliability. I’m proficient with Bitcoin-native technologies, backend systems, and blockchain protocols, delivering end-to-end solutions using Node.js, Redis, RabbitMQ, and BitcoinJS. I’m passionate about advancing secure blockchain ecosystems and delivering real-world applications that prioritize security and scalability. I’m excited to contribute to a forward-thinking infrastructure team, leveraging my experience across fintech, gaming, and decentralized platforms to design robust, secure, and scalable systems that users can trust.…I’m Michal Stefanow, a blockchain and backend engineer with over a decade of experience building secure, scalable platforms. At Onessus I led backend architecture and blockchain integration for Meme Dealer, focusing on security, performance, and reliability. I’m proficient with Bitcoin-native technologies, backend systems, and blockchain protocols, delivering end-to-end solutions using Node.js, Redis, RabbitMQ, and BitcoinJS. I’m passionate about advancing secure blockchain ecosystems and delivering real-world applications that prioritize security and scalability. I’m excited to contribute to a forward-thinking infrastructure team, leveraging my experience across fintech, gaming, and decentralized platforms to design robust, secure, and scalable systems that users can trust.

Available to hire

I’m Michal Stefanow, a blockchain and backend engineer with over a decade of experience building secure, scalable platforms. At Onessus I led backend architecture and blockchain integration for Meme Dealer, focusing on security, performance, and reliability. I’m proficient with Bitcoin-native technologies, backend systems, and blockchain protocols, delivering end-to-end solutions using Node.js, Redis, RabbitMQ, and BitcoinJS. I’m passionate about advancing secure blockchain ecosystems and delivering real-world applications that prioritize security and scalability.

I’m excited to contribute to a forward-thinking infrastructure team, leveraging my experience across fintech, gaming, and decentralized platforms to design robust, secure, and scalable systems that users can trust.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Blockchain & Backend Engineer at Onessus

October 1, 2025 - October 1, 2025

Led the backend architecture and blockchain integration for Meme Dealer, ensuring security, performance, and reliability across the platform. Implemented rug-protection mechanisms, enhancing transaction safety and user trust. Improved platform security and reliability through rigorous testing and robust architecture.

Backend & EVM Smart Contract Engineer at okb.fun

December 1, 2024 - December 1, 2024

Developed high-quality backend systems and EVM smart contracts for okb.fun, enhancing platform functionality and enforcing robust security for on-chain trades. Implemented rigorous testing protocols, reducing vulnerabilities and improving transaction safety.

Backend & Bitcoin Engineer at hausofhat

September 1, 2024 - September 1, 2024

Developed frontend, backend, and Bitcoin components using Next.js, TailwindCSS, Node.js, Express, Socket.io, bitcoinjs-lib, and PSBT, enhancing platform functionality and user experience. Improved transaction safety and reliability through robust architecture and CI practices.

Lead Bitcoin Developer at Membula

December 1, 2023 - December 1, 2023

Engineered a next-generation Bitcoin-native launchpad, integrating frontend, backend, and blockchain components to improve scalability and security. Implemented advanced batch time-book transactions and dynamic profile management to boost user engagement.

Full Stack Developer at Crypto Legions

January 1, 2023 - January 1, 2023

Developed a P2E game on the Binance chain, enhancing platform functionality and user experience with Node.js, Express, MongoDB, Next.js, and TailwindCSS. Implemented robust backend frameworks to improve performance and reliability, collaborating with cross-functional teams to ensure seamless deployment.

Senior Full Stack Developer at Tech Spec

December 1, 2021 - December 1, 2021

Led API-driven platform development to improve business processes, delivering scalable backend services and robust frontend solutions.

Innovation Engineer at Vodafone

March 1, 2020 - March 1, 2020

Worked on innovation initiatives to modernize banking and communications tech, contributing to a range of projects focused on future-ready solutions.

Developer (Contract) at The Pillar Project

May 1, 2018 - May 1, 2018

Developed a mobile wallet using Ionic (Angular 2), enabling secure mobile payments and wallet functionality.

JavaScript Developer (Contract) at HSBC Global Banking and Markets

August 1, 2017 - August 1, 2017

Built applications for relationship managers to manage client accounts; used AngularJS, CSS3, HTML5, D3, Java, Eclipse, Tomcat to deliver UI-rich tools.

JavaScript Developer (Contract) at Microsoft

November 1, 2015 - November 1, 2015

Contributed to multiple projects, including a feedback platform for released games and the redesign of internal sites; worked on 3D object integration concepts for Microsoft Office.

JavaScript Web Developer at Qualcomm

October 1, 2014 - October 1, 2014

Led optimization of legacy mobile systems for 30k+ employees, built internal web apps with AngularJS, Ionic; mentored interns on modern web/mobile practices.

JavaScript Developer, Web Solutions at Spiral Software Ltd

January 1, 2014 - January 1, 2014

Led backend architecture and blockchain integration for Meme Dealer; enhanced security and reliability; implemented rug-protection mechanisms to improve transaction safety and user trust.

Software Development Engineer at Citrix Systems

December 1, 2012 - December 1, 2012

Drafted feature specifications and implemented accessibility compliance features; delivered cross-browser compatible code and collaborated across teams to streamline releases.

Online Marketing Specialist at Twisted Music

October 1, 2011 - October 1, 2011

Monetized inventory via targeted newsletters, developed bulk video description tools, and established a YouTube partnership program to drive revenue growth.