Marcel Soubkovsky - Logo

I build interfaces that feel fast and clear

Frontend engineer focused on product UX, performance, and shipped detail across React, Next.js, and TypeScript

portrait of Marcel Soubkovsky

Featured work

Three products that show the kind of interfaces I like to build

Supporting work

More product work, utility tools, and mobile builds

Archive / experimental

Older technical work and experiments, kept visible but quieter

S3PIA web interface with CRT styling

S3PIA

Dockerized personal AI assistant with memory, terminal access, and cron

Chronos time travel app

Chronos

Time-travel game concept mixing AI chat, image generation, and narrative

l-storage npm library

l-storage

Type-safe localStorage wrapper with built-in inspection

Gallery grid layout

React Pic Gallery

Lightweight image gallery component for React apps

Local Comments VS Code extension marketplace page

Local Comments - VS Code Extension

VS Code extension for adding comments locally without git noise

FD-BPM simulation output

Physics simulation - FD-BPM

Finite-difference beam propagation simulator for photonics research

EasyPlotGUI example plot

EasyPlotGUI - Python plotting UI

Type-safe Python plotting UI for quick visual analysis

Assembled Liftoff device

Liftoff - Force Measurement Device

Force-measurement device for semiconductor extraction research

Educational Multiflow Software interface

Educational Multiflow Software

Educational fluid dynamics app that makes complex flow visible

About

I like working on products where the quality is visible in the details, and I’m strongest when a team needs someone who can take messy requirements and make the interface feel obvious

Contact

Have a product that needs better UX or sharper frontend execution? Let’s talk