available · ping me

Miroslav Hanzelka

I’m a programmer who builds a bit of everything: web experiences, games, and space. This is my home base for projects, photography, and small tools that make my work easier.

6projects shipped or shipping

10tools in the kitchen

∞side ideas in the queue

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   miroslav.hanzelka

$cat~/about.md

# whoami

Software engineer interested in web platforms, games, and space. JavaScript / React for the web — C++, UE5, Java, and Unity when games and bigger projects take over.

I code because I’m passionate about it — not because I have to. That’s how you end up spending years on an MMO nobody asked for. When I’m not coding, I’m playing games, watching movies, brainstorming the next idea, or spending time with my son.

// this site is a work in progress. Sections will fill in over time.

nameMiroslav Hanzelka

roleprogrammer

stackJS/TS · React/Next.js · UE5/Unity · Java

status● available

githubmhanzelka

$ls~/projects --filter=all

6 of 6

Project Planet Space~/projects/project-planet.space● Live

Web app covering all 8 planets + Pluto. Enter your weight and age and see the results across the solar system. Each planet includes surface gravity, temperature ranges, day and year length, atmospheric pressure, and moon counts. Also available as a mobile app on the App Store.

Next.jsReact

→ projectplanet.space2024

frame-bridge~/projects/mhanzelka/frame-bridge● Live

Open-source library that solves cross-frame messaging with a friendly API. Supports request/response calls and event channels. Handles handshake, timeouts, and retries out of the box.

JavaScriptReactTypeScript

→ github.com/mhanzelka/frame-bridge2025

[ game ]

Project Game~/projects/unannounced◐ In Progress

Current passion project in active development. A first-person space ship simulator where the player must keep the ship running: fix damage, manage electrical systems, solve problems, and deal with whatever the ship throws at them.

Unreal Engine 5C++Blueprints

// not yet public2025

[ web ]

Notaro~/projects/notaro◐ In Progress

Built together with my son. Notaro teaches you to read musical notes through progressive exercises. Identify the note shown, keep your streak going, and work your way through increasingly harder challenges.

TypeScriptReactNext.js

// not yet public2026

Posterity~/projects/posterity○ Archived

A project that's followed me since childhood, reinvented multiple times along the way. Each version was really about learning: isometric rendering, browser 3D with Three.js, Unity. The final form combined a Unity client with a Java MMO backend built on entity-component-system architecture. Shelved for now — but who knows.

JavaUnityNetworking

// not yet public2010–2022

Grid Puzzle~/projects/grid-puzzle○ Archived

First published Apple app, built natively in SwiftUI. A logic puzzle game with two modes: sort colored tiles into the right row order, or arrange numbers and math operators so the equation produces the correct result.

SwiftUISwift

// not yet public2023

$open~/photos --tag=all

17 frames