Curriculum vitae

Mert Kaan Koparan

Independent software developer

Summary

Freelance developer since 2018, building websites, web apps, Discord bots and backend systems for small businesses and communities. I care about security, automated tests and clear communication, and I'm currently a high-school student.

Experience

Independent software developer

2018 – present

Freelance, remote

Web apps with Next.js, React, FastAPI and Flask, backed by MongoDB or SQLite.
Discord bots in discord.py: support tickets, ledgers, dashboards and licensing, with SQLite or SQLAlchemy storage.
Authentication systems with argon2id, two-step verification, passkeys and audit logs.
Desktop tools for Windows in Python, and graphics programming in C++20 with OpenGL.
An Android personal-finance app in Kotlin with Jetpack Compose.

Selected projects

leffloard.wtf · 2026
This site, and the private system behind it that runs my client work.
Partnership ledger bot · 2026
Bookkeeping for a two-person business, typed as ordinary chat messages.
MiniEngine · 2026
A small C++20 OpenGL renderer with forward and deferred paths.

Skills

Languages: TypeScript, Python, C++20, Kotlin, SQLSeen in leffloard.wtf, Partnership ledger bot, MiniEngine, CardTrack
Web: Next.js, React, Tailwind CSS, FastAPI, FlaskSeen in leffloard.wtf, Minecraft server status page, Income and expense tracker
Data: MongoDB, SQLite, SQLAlchemy, RoomSeen in leffloard.wtf, Partnership ledger bot, CardTrack
Bots and APIs: discord.py, Claude API, Gmail API, RESTSeen in Discord ticket system, Partnership ledger bot, JarvisCore
Security: argon2id, TOTP, Passkeys (WebAuthn), Content Security PolicySeen in leffloard.wtf
Quality: pytest, Vitest, Playwright, GitHub ActionsSeen in leffloard.wtf, Partnership ledger bot
Graphics and mobile: OpenGL, GLSL, Jetpack ComposeSeen in MiniEngine, CardTrack

Education

High school · Current student

Languages

Turkish · Native
English · Working proficiency