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React Developer, Łódź, Poland

Kacper Mizera

React developer at Sklepy Komfort since 2022. I started on the e-commerce side with Magento and moved into frontend in 2025. Now I work on the shop's Next.js storefront: styling, accessibility, checkout, analytics and performance.

kacper.mizera729@gmail.comGitHub ↗LinkedIn ↗

Experience

  1. React Developer, Sklepy Komfort

    08/2022 – Present · Łódź, Poland

    1. Junior E-commerce Specialist (Magento)08/2022
    2. Junior Frontend Developer03/2025
    3. React Developer04/2026
    • Build features for the shop's Next.js storefront in React and TypeScript, working from the UX team's Figma designs.
    • Connect the frontend to the backend APIs together with the backend developers.
    • Review the team's pull requests and get mine reviewed.

    Main areas

    Styling architecture
    Moved the storefront's styling from SCSS to Tailwind CSS, one area at a time, cleaning up components along the way.
    Accessibility
    WCAG fixes across the shop: keyboard navigation, focus handling, contrast and screen reader support.
    Cart, checkout and booking
    New views and steady improvements in the parts of the shop that take orders and bookings.
    Analytics
    E-commerce events in the dataLayer, built to the specs from the analytics team.
    Performance and code quality
    Removing dead code, lazy loading, font optimisation and the move to the App Router.
    Landing and static pages
    Promo, SEO and static pages of every size, including the Na Komfortowej site.
    Design systemongoing
    Bringing the UX team's Figma and the frontend onto one shared design system.

    About 400 shipped tasks and 1,200+ commits on the main storefront in the last two years.

  2. JavaScript Developer (intern), Codeally.io

    06/2021 – 09/2021 · Łódź, Poland

    • Wrote short JavaScript and Python coding exercises for the platform, e.g. reordering the elements of a sequence.
    • Worked in a shared Git repository with the rest of the intern team.

Education

  • BSc, Business Informatics, University of Łódź

    10/2019 – 03/2023 · Łódź, Poland

    Faculty of Economics and Sociology. Field: building and analysing software and applications.

  • BPO.01 Occupational safety management, LOGOS

    Piotrków Trybunalski, Poland

Skills

Technical

HTML, CSS, SCSS, JavaScript, TypeScript, React, Next.js, Tailwind CSS, Git, Figma

Practices

Accessibility (WCAG), Performance optimisation, Analytics, Design systems, Code review, Scrum

Languages

Polish (Native), English (C1)