[ developer · builder · 01 ]
William
Zieme
Student and developer. I build things people actually use, like web apps, an iOS app, and hardware, and ship sites that reach 100k+ people a month. when I'm not coding, I'm either next to a car or behind a camera.
NOW Teaching kids to code at Code Ninjas, and shipping side projects on the weekend.
// at a glance
About
i'm a student who codes for fun in my free time. my code ends up in front of real people. between my websites i see north of 100,000 visitors a month, i've shipped an app to the app store with 500+ monthly downloads, and i spend my summer weeks teaching kids to code.
i do everything: Python packages, game bots, frontend and backend, and soldering ESP32s onto custom PCBs. i spend time perfecting my projects, so that i put my best out to the world.
Born in Sweden, living in the US. while off the keyboard you'll find me watching race cars or shooting photography (take a look!) ↓↓↓↓↓↓↓↓↓↓↓↓↓↓
See the photography →Skills
the stack i build with.
Languages
Web
Hardware & Embedded
Tools & Practices
Concepts
Experience
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2026 — Present
Coding Instructor
Code Ninjas
teaching kids to code. breaking real programming concepts into something a 9-year-old can build and get excited about.
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2025 — Present
AI Specialist
Skyler Labs
working alongside some of the best devs i have ever met * focusing on developing the next wave of sales through Skyler ONE, Vertex, and ZIM, along with app development with Yumz see more
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2024 — 2025
Intern
Channel Factory
working on AI -> customer pipelines. learned how massive codespaces worked and how to collaborate with others especially in git.
Selected Work
Code I build for the love of it.
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01
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python-mla
a PyPI package that generates MLA citations from an article link. parses JSON-LD and meta tags, with an optional AI fallback for the messy pages.
// solo built the project.
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02
↗
minesweeper bots
minesweeper rebuilt in Python, then four bots to play it: pure random, random + flood fill, and two generations of my own solver. v2 wins ~80% of its games — full data in the repo.
// Designed the v2 solver to ~80% winrate, with the data to back it up.
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03
↗
murder mystery
a terminal-based murder mystery game. all storylines built and fetched from json.
// made the whole story data-driven so new cases are just JSON
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04
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MusicPi
a server + remote so i can play music without my phone or laptop. a Raspberry Pi drives the speakers via an ESP32-C3 Super Mini, talking over ESP-NOW to a handheld remote (ESP32-S3) with an OLED, a custom PCB, and a CAD case i designed in Onshape.
// End-to-end: firmware, ESP-NOW link, custom PCB, and the Onshape case.
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05
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QuickGrade
a PyPI package that generates GPA, percent grades, or letter grades from selected inputs.created a CLI for it as well with arguments, to learn and get experience. included unit tests with github actions to streamline commit and PRs.
// built the whole project including CLI.
Shipped & Live
some of my other projects that real people use right now.
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01
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GymAI: Smart Fitness
a smart fitness app, live on the App Store. my first shipped iOS app — built end to end, start to store.
// 500+ monthly downloads
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02
↗
BudgetGearHub
an Amazon affiliate site for budget gear — and the engine behind most of my monthly traffic.
// built the content engine + SEO that drives the bulk of 100k monthly visits.
Contact
want to talk code, hardware, or anything else? reach out: