Mariusz Beltowski is a software development consultant and founder with 11 years of experience building high-throughput, production-grade web applications and web3 platforms. A Jagiellonian University computer science master and postgraduate-trained IT manager, he has designed and launched two products that serve millions of users and sustain thousands of requests per second. He leads DoNotCode delivering remote engineering for US clients, and brings hands-on expertise in Node.js, Nest.js and React while advising web3 startups like MemeFi. Known as a clean-code evangelist with an “everything is possible” mindset, he combines technical leadership roles across scale-ups with day-to-day engineering—often owning both architecture and implementation. Based in Krakow, he pairs deep engineering rigor with product-minded execution in NFT and loyalty platforms.
11 years of coding experience
8 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at Jagiellonian University
Postgraduate Degree IT Business Management, Postgraduate Degree IT Business Management at AGH University of Krakow
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Mariusz Beltowski - Software Development Consultant Founder at MemeFi