Michał Miszczyszyn is a Co-founder and CTO with 13 years of professional experience and over 15 years coding since childhood, who blends hands-on full‑stack engineering with product and community leadership. Based in San Francisco, he builds and scales e-commerce platforms (Your Next Store) and payment integrations (Saleor) while writing bestselling technical content—author of the Polish TypeScript book "TypeScript na poważnie" and founder of the largest web dev community in Poland. A daily user of TypeScript, Python, and Rust, he specializes in R&D and cutting‑edge tooling, including AI-powered developer tools, and isn’t shy about exploring OCaml or Haskell. His open-source contributions include front-end and integration work on notable projects like Saleor and YourNextStore, demonstrating a knack for improving developer UX and security posture. He also runs cohort-based courses that have trained 850+ engineers, combining teaching, writing, and product-building to amplify developer skills at scale.
13 years of coding experience
15 years of employment as a software developer
IB World School no.1309 Gdańsk, IB World School no.1309 Gdańsk at International Baccalaureate (IB)
Master of Engineering (MEng) Computer Science, Master of Engineering (MEng) Computer Science at Gdańsk University of Technology
Your Next Store: Modern Commerce with Next.js and Stripe as the backend.
Role in this project:
Front-end Developer
Contributions:6 reviews, 15 PRs, 81 pushes in 6 months
Contributions summary:Michał primarily focused on front-end development, implementing features and optimizing the user interface of the e-commerce store. Their commits demonstrate the addition of prefetching to the search functionality, improvements to image sizing and responsiveness via media queries, and the implementation of a new mobile navigation menu. They also worked on integrating the sticky bottom product bar and enhancing the product image gallery.
Saleor Storefront built with React 18, Next.js 14, App Router, TypeScript, GraphQL, and Tailwind CSS.
Role in this project:
Full-stack Developer
Contributions:1 release, 356 reviews, 116 commits in 6 months
Contributions summary:Michał's commits primarily involve refactoring and merging codebases, specifically integrating the `checkout` and `checkout-app` modules, renaming files, and extracting common types to prevent circular dependencies. They addressed code scanning alerts related to security vulnerabilities by updating code in the checkout-app, including changes to address information exposure through stack traces and fixing HTML interpretation issues. Further, the user made improvements to the Jest configuration, fixed types, eslint problems, and resolved issues related to the Next.js app.
next-jssaleortailwindcssecommercesaleor-checkout
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Michał Miszczyszyn - Co-founder & CTO at Type of Web