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What I’ve done.

It’s not everything I’ve done, just everything I can show.

  1. LTE Socks

    Monitor on a pale desk with the LTE Socks portal in the light theme: the Proxies section, cards of mobile proxies with port, address, plan and traffic left

    Customer portal and admin platform

    Both products had gone years without an update: no mobile layout at all, and navigation nobody could hold in their head. The work was billing, referrals, statistics, logs, roles and permissions — and one design system underneath all of it, which the development team adopted and kept using.

    Type
    Customer portal and admin platform
    Work
    Full redesign
    Versions
    Desktop and mobile
    Themes
    Light and dark
    Design system
    Tokens and variables

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  2. MusConv

    Phone against a dark backdrop with violet light, showing the MusConv splash screen: the logo and the line “One app. All your music. Moved.”

    Mobile app for moving music libraries

    The subscription flow was where users were being lost. After the redesign, install-to-paid conversion rose 12%, measured by the development team’s own analytics. That number is the only hard metric on this site, and it belongs to this project.

    Type
    Mobile app
    Work
    Full redesign
    Screens
    44

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  3. This site

    Laptop on a concrete block with the sergiusdesign.com home page: the headline “Websites, admin panels and customer portals” and the “Tell me about your project” button, light theme

    Portfolio site, end to end

    A site that tells a client in five seconds what I do and who it’s for. From structure to launch — for myself, the way I do it for clients.

    Type
    Portfolio site
    Development
    From scratch
    Admin panel
    Sanity Studio
    Languages
    Ukrainian and English
    Themes
    Light and dark

    Read the case

Nothing here matches what you need?

Describe your project and I’ll tell you straight whether I’ve done something like it.

Some work is under NDA and isn’t here. If you need to see something specific, ask — I’ll show what I’m allowed to.