Tegan K.

Tegan Kierznowski

Software developer, future quant.

I've been shipping code since I was 12, starting with a Discord bot because Fortnite got boring. Now I build VPN infrastructure, trading backtests and the occasional banana-based unit converter. I'm a 17-year-old senior at TASIS England, looking for a quant or software engineering internship.

Get in touch View my GitHub

Open to internships

TEGN

Tegan Kierznowski, Inc.

Up and to the right since 2020

Analyst rating: strong hire

Past performance is a pretty good indicator of future results. Select a candle to read that part of the story.

Things I've built

Some have users, some were built to learn. Public ones link to the code, and I'm happy to walk through the private ones.

A VPN that works on networks that block VPNs

A desktop client for Windows, macOS and Linux that tunnels WireGuard through censorship-resistant transports, so to a firewall the connection looks like ordinary HTTPS. I built the app, the servers it connects to, and the website, accounts and payments around it.

  • Electron app with a Go networking core
  • Dockerized server fleet running WireGuard and obfuscated proxies
  • React and Express site with PostgreSQL accounts and payments
  • Release builds for three operating systems, in eight languages
  • 1,200+ commits across the client, servers and site

My biggest project by a long way. Ask me about the architecture.

How I got here

The chart at the top of the page, in words. Every candle is one of these.

  1. 2020

    Built a Discord bot

    Guildster started with YouTube tutorials and the discord.js guide. I learned JavaScript because I needed it.

  2. 2021

    Grew it to 50+ commands

    Added MongoDB, music, moderation, giveaways and a website. Version 5.2 by the end of the year.

  3. 2021

    Started a website I never finished

    The repo description reads "terrible code for a website I'm working on that I'll probably never finish." It was accurate.

  4. 2023

    Made a chat app for planes

    LocalChat let my friends and me message each other mid-flight with no internet at all.

  5. 2024

    Finished a website, finally

    Built the site for the Minecraft server I host. Small, and actually done.

  6. 2025

    Got serious about quant

    Started backtesting strategies in Python, built a stock lookup API, and picked up R for data analysis.

  7. 2026

    Shipped a censorship-resistant VPN

    Desktop app, servers, website and payments, all mine. The biggest jump on the chart.

  8. Next

    An internship with you?

    I'm looking for a quant or software engineering internship. If you're hiring, let's talk.

Academics

I'm a senior at TASIS England, an American school in Surrey just outside London, graduating in 2027. Four AP exams down, four more in May.

AP exams taken

  • AP Calculus AB5
  • AP Computer Science A5
  • AP Macroeconomics5
  • AP European History4

Taking now

  • AP Calculus BCpredicted5
  • AP Statisticspredicted5
  • AP Physics C: Mechanicspredicted5
  • AP Microeconomicspredicted5

What I work with

Sorted by honesty.

Every day

  • JavaScript
  • TypeScript
  • Node.js
  • React
  • Git

Have shipped with

  • Go
  • Electron
  • Express
  • PostgreSQL
  • MongoDB
  • Docker
  • Nginx
  • WireGuard
  • Vite
  • Tailwind

Learning now

  • Python for data analysis
  • R
  • Quantitative finance
  • Backtesting

Off the clock

Let's talk.

Hiring a quant or software engineering intern? I'd love to hear about the role. LinkedIn is the fastest way to reach me.

Message me on LinkedIn Browse my GitHub