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Projects

Everything I've built, grouped by weight — or filter by theme and by the tech I actually used.

Live on the web

The sites I've built and run — click through, they're all real.

orbit.irminsul.ukOrbital Ops
Orbital Ops
visit ↗case study →
irminsul.ukIrminsul — landing
Irminsul — landing
visit ↗case study →
minecraft.irminsul.ukMinecraft hub
Minecraft hub
visit ↗case study →
gambittournament.comChess Tournament
Chess Tournament
visit ↗case study →
petrvalik.github.io/ExampleApiExample API — dashboard
Example API — dashboard
visit ↗case study →
petr.irminsul.ukThis portfolio
This portfolio
visit ↗
Theme
Tech
25 of 25 projects

Flagships

Six projects with full case studies — the problem, the decisions, the build and the numbers.

Orbital Ops

live
12,408 satellites, aircraft and ships, propagated live in the browser.
CesiumJSReactTypeScriptViteZustandHonoSGP4WebGL

Example API

research
One API, ten implementations across .NET, Python & TypeScript — benchmarked.
.NETC#PythonTypeScriptOpenAPIk6Docker

Irminsul — indie cloud

live
A private cloud: 19 services, single sign-on, DNS-as-code, disaster recovery.
HonoTypeScriptDockerAuthentikCaddyCloudflarerestic

webplatform

private
A multi-tenant SaaS for small-business websites — one .NET 10 modular monolith, ~30 vertical-slice modules.
.NET 10C#Vertical SlicePostgresNext.jsReactStripeDocker

SnapshotDiff

done
One .NET 10 Blazor core, hosted unchanged in three apps — desktop, mobile and browser.
.NETBlazorMAUIPhotinoSQLiteTailwind

Chess Tournament

live
A bilingual tournament site, in production for a GM chess event.
Next.jsReactFirebasei18n

Professional — defense

Operational military software from two years at DELINFO (2024–2026). The code is closed; these pages describe the architecture, not the internals.

Vehicle diagnostics

private
Diagnostics for CV90 and Tatra vehicles — a transport-agnostic core fed by 1 s polling, WebSocket with heartbeat and live camera streams.
.NETC#ASP.NET CoreWebSocket

Plans & Orders

private
Staff document exchange with a strict state workflow — clean-architecture .NET behind a Blazor (Radzen) UI.
.NETBlazorRadzenClean Arch

BMS map plugin

private
A battle-management map plugin — military symbology parsed from XML into a symbol tree and exported to KML.
.NETC#XMLKML

Products & tools

Smaller systems, a team project I led as tech lead, and the tooling I build for my own work.

FleetEase

team
Fleet-management platform, delivered as tech lead.
ExpressSupabaseReactTypeScriptTailwindGCP

life-platform

wip
Self-hosted lunch / reminders / birthdays trio.
React.NETPostgresAuthentikVertical Slice

binify

done
Distributed IoT smart-bin, edge to cloud.
ZigPico WtRPCTimescaleDBReact

claude-kit

oss
Portable Claude Code plugin kit (MIT).
Claude CodeTypeScriptMIT

toggl-mcp

wip
Remote MCP server for time tracking.
.NETC#MCP

Order API

done
A take-home built twice: layered vs vertical-slice.
.NETC#MySQLDocker

Foundations

Coursework and early projects in C, Java, Python, Bash and JavaScript — where the habits started.

Library

done
Book library with full CRUD.
ReactNodeExpress

Minesweeper

Terminal minesweeper in C99.
C

PacketTools

Packet capture & analysis.
Clibpcap

Permission Tools

Unix permission utilities.
CPOSIX

Pandemic Simulation

Agent-based epidemic sim.
C

Ciphers

Morse / Caesar / Vigenère.
Java

TextTools

Text-processing suite.
JavaMaven

Family Tree

Genealogy modeller.
Python

Warehouse

Inventory system.
Python

Studis

University automation in pure Bash.
Bash