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-like scheduling

Chronos time travel app

Chronos

Time-travel game prototype mixing story beats, snapshots, and generated scenes

l-storage npm library

l-storage

Type-safe localStorage wrapper with a built-in way to inspect stored keys

Gallery grid layout

React Pic Gallery

Lightweight React image gallery with responsive layout, touch support, and accessibility

Local Comments VS Code extension marketplace page

Local Comments - VS Code Extension

VS Code extension for leaving local comments on code without pushing them to git

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 that reduces boilerplate around interactive charts

Assembled Liftoff device

Liftoff - Force Measurement Device

Force-measurement device for semiconductor extraction research

Educational Multiflow Software interface

Educational Multiflow Software

Desktop learning tool that made multiflow fluid dynamics easier to explore interactively

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