Justinas (Justin) Launikonis

whoami

you found my "cheeseter" egg!

Hii!! I'm Justin, an IT student at NHL Stenden and Minecraft plugin dev (you've probably met me on discord)

Most of my time goes into software, plugin development, building apps for smart glasses that nobody owns yet, poking with mouse at whatever AI tool is trending this week (cough...manus desktop...), and pushing through all-nighters building whatever idea I've told myself "will only take a few hours"

When I'm not working on something, I'm probably biking, rock climbing, or playing video games

Feel free to reach out to me on LinkedIn!

cat ~/random.md

My life motto

"hey computer: fuck everything up" - cool kids nowadays

Travel Music Wins Lore Toolbox

cat ~/experience.md

the more professional-looking part of this

Insyra Intelligence

Junior Software Engineer

08/2026 - present

Kaunas, Lithuania, Hybrid

Drefvelin Development

Software Engineer & Operations Administrator

04/2026 - present

Remote

Custom in-house plugins in Java on Spigot API, using Linux (Hetzner) server. Managing a team of 21; 4,600+ unique players, 825+ active.

Freelance Developer

11/2022 - 04/2026

Remote

Built the original plugin suite and server infrastructure on contract, pre-incorporation.

ls ~/projects.md

a few things i want people to actually click on

Perron

NS (Dutch Railways) journey planner for Even Realities G2 smart glasses. TypeScript app on the Even Hub SDK, live departures and transfers on the 576×288 heads-up display.

TypeScript
Even Hub SDK
Vite
NS API
Cloudflare Workers

GitHub Even Hub

evenhub-app-ui

Claude Code skill that packages the Even Realities G2 design system, app and OS guidelines plus the official SVG icon set, so an agent builds companion-app UI that actually looks like Even Hub.

Claude Code skill
Even Realities
Design system
Prompt engineering

GitHub

loot-predictor

Reverse-engineered a game's PRNG and mapped its loot tables, so chest drops can be read forward before you open them. Ports C# System.Random to JS, parses savegames in the browser, and plans replay routes for a specific item or for XP.

JavaScript
Reverse engineering
PRNG
Savegame parsing
CLI + web UI

GitHub

cat ~/minecraft-plugins.md

my minecraft plugins :D

MusicalInstruments

v2.1 · Paper 1.21+

source

Turns any hotbar item into a playable instrument. Slots 1–8 are the notes, shift gives you the alternate note or the full chord, and every instrument is defined in YAML, no code changes to add a new one.

Java 21
Paper API
Maven
TLibs
MMOItems
ItemsAdder

commands

/instruments keybinds: note layout for the held instrument
/instruments list: every instrument loaded
/instruments give <instrument>: hand yourself one
/instruments reload: re-read the YAML, no restart

Fin the Onion Thief

1 / 6

"Just some goofy thing I put together after writing a song in RP." 1:24

video by jake3971 on discord

AnimalWhistle

v1.1.0 · Paper 1.21+

source

Right-click the whistle and every horse, donkey, mule and llama in range starts glowing through walls until you find them. Radius, entity whitelist and cooldown all live in the config, and it runs entirely off one event, no scheduled tasks.

Java 21
Paper API
Maven
TLibs
MMOItems
ItemsAdder

commands

/animalwhistle reload: re-read the config and item cache, op only

Horse Whistles

1 / 1

One right-click, and every horse in range lights up. 0:17

Surgery

v1.2.0 · Paper 1.21+

source

Healing as a mini-game for medical roleplay. Open the operating GUI on a patient, work out which of 29 diagnoses you are looking at, then operate with 14 instruments while pulse, temperature and bleeding are all against you: bleed too much and your hands start slipping.

Java 21
Paper API
Maven
TLibs
MMOItems
ItemsAdder

commands

/surgery <player>: open the operating menu on a patient in range

Surgery

1 / 1

A full operation, start to finish. 5:22

AACommandsFiller

v2.1 · Paper 1.21+

source

Builds whole tab-completion trees out of YAML instead of hardcoded Java. Commands register at runtime through the server's CommandMap, nest as deep as you like, and filter themselves by permission. Running in production on multiple servers.

Java 21
Paper API
Maven

Geiger Counters

v1.1.0 · Paper 1.21+

source

A treasure hunt plugin based on particle rings: more rings and warmer colours mean you are closing in on a hidden source. Collect it for weighted loot across six rarity tiers, and the source moves somewhere new for the next hunt.

Java 21
Paper API
Maven
TLibs
MMOItems
ItemsAdder

cat ~/links.md

links!

cat README.md

Source code on GitHub thanks to Sagar Patil