lottieyael

16-year-old developer. Embedded systems, desktop apps, compilers.

16 years old · 9 projects · 5 languages · Hungary

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𓂃˖˳·˖ ִֶָ ⋆🌷͙⋆ ִֶָ·˳˖𓂃 ִֶָ

Visuall

Flagship

A compiled programming language with Python-like syntax on LLVM.

Visuall is a statically-typed compiled language that combines Python's clean syntax with LLVM's powerful optimization pipeline. It features O2 optimization, a mark-and-sweep garbage collector, closures, f-strings, an LSP server for IDE integration, a VS Code extension, and a package manager. Benchmarks show 1.0-1.4x the performance of equivalent C++ on compute-bound workloads.

1.0-1.4x

vs C++

LLVM opt level

Garbage collector

LSP

IDE support

main.vsl

import { printf } from "std.io"

fn fib(n: i32) -> i32 {
    if n <= 1 {
        return n
    }
    return fib(n - 1) + fib(n - 2)
}

fn main() {
    let result = fib(35)
    printf("fib(35) = {result}\n")

    // Visuall compiles to native code via LLVM
    // O2 optimization: 1.0-1.4x of C++
}

Website → GitHub →

Projects

Visuall

A compiled programming language with Python-like syntax on LLVM.

C++LLVMLanguage DesignLSP

Website →

wFetch

The fastest native Windows system fetcher, built with Tauri.

CRustReactTauri 2Windows API

GitHub →

GeoSentinel

Real-time natural disaster monitoring on an interactive 3D globe.

RustReactThree.jsTauri 2NASA API

GitHub →

Consense

Query ChatGPT, Claude, and Gemini simultaneously on Android.

KotlinJetpack ComposeAndroidAI

GitHub →

yatuofetch

A Windows terminal system fetcher in C with glitch ASCII art.

CWindows API

GitHub →

The Larkers' Codex

A Yaelokre-themed encrypted notepad application.

CEncryption

GitHub →

Aleph

Linux terminal commands implemented in x86 assembly.

x86 ASMLinux

GitHub →

STM32 Smart Compass

A GPS-enabled smart compass on STM32 microcontroller.

CSTM32KiCAD

STM32 Analog Multimeter

Precision low-current and voltage measurement on STM32.

CSTM32

𓂃˖˳·˖ ִֶָ ⋆🌷͙⋆ ִֶָ·˳˖𓂃 ִֶָ

Skills

Python Kotlin C C++ Rust VSCode Micro KiCAD Git Linux ATmega16A STM32 Analog circuits PCB design Physics Mathematics Competitive programming Art

Competitions

Codeforces

Active competitor (handle: yatuoximeng)

2025–

PENdroid Nationals

5th Place

2026

Kodkupa (IIOT Qualifiers)

National finalist, 1st place in 3rd qualifier round

2026

𓂃˖˳·˖ ִֶָ ⋆🌷͙⋆ ִֶָ·˳˖𓂃 ִֶָ

About

I'm a 16-year-old developer from Hungary building systems-level software. I work across the stack — from bare-metal embedded C on STM32 and ATmega16A microcontrollers, to desktop apps with Tauri and Rust, to language design with LLVM. My flagship project is Visuall, a compiled programming language with Python-like syntax backed by LLVM, featuring O2 optimization, a mark-and-sweep GC, closures, an LSP server, and a VS Code extension. I also compete in programming competitions and publish tech content.

I started with Arduino when I was 12. By 13, I was taking an electrical engineering course. At 14, I got serious about C and x86 assembly on Linux. Since then I've collected over 20,000 electronic components, designed PCBs in KiCAD, built Android apps with Kotlin and Jetpack Compose, and written a compiled programming language from scratch. When I'm not coding, I'm doing competitive programming on Codeforces (handle: yatuoximeng), studying physics and math, or making tech videos.

Also known as yatuoximeng on Codeforces.

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