I'm a developer from South Africa and I'm looking for work. Contract, freelance or full-time, remote. I can start this week.
I build full-stack apps and AI stuff, and I get them live. Everything below is running right now, so click on it.
If your team looks anything like this:
backlog.length > team.capacity // true, every sprintthen this PR fixes it. Reviewers: you 🙂
📬 Send me a message or email me at wsletcher@gmail.com
🗣️ The English System
An English learning platform built on my own teaching method, with real paying students. It has AI feedback on writing, a voice speaking partner you can talk to hands-free, and an AI avatar on every page that takes you where you need to go. Payments run through PayFast. I built it and I run it, on my own.
Next.js 16 · React 19 · TypeScript · Supabase · Groq · Gemini · Whisper · Vercel · 98 merged PRs · 1,200+ tests
🧪 Git From Zero · code
Takes someone who has never opened a terminal through to branches, pull requests and fixing a merge conflict. The sandbox in it is a small git engine I wrote, so commits, rebase and reflog actually behave like git.
One HTML file · no dependencies · 87 tests
☸️ Kubernetes & OpenShift
21 lessons and 5 browser sandboxes, plus a real 3-node cluster with a chaos tool that breaks things on purpose so you learn how to fix them.
kind · Calico · Kubernetes 1.34 · 24 tests
🏢 Sletcher Systems
My agency site, in English, Afrikaans, isiXhosa and isiZulu. I built the enquiry form, the analytics and the admin dashboard behind it myself.
React · Vite · Vercel · Supabase · 81 merged PRs
🎓 TeacherSletch (still building)
A free platform for people moving into software from other careers. You apply, then prove what you can do with your own projects, and a bot checks them automatically.
Python · pytest · GitHub Actions · Docker
- ✅ 5 merged into Unsloth (77k★)
- #10075: when broken folder permissions stopped the installer replacing its copy of Node.js, it blamed a virus scanner. Now it names the permissions as a possible cause, along with the commands that repair them.
- #9924: when a Studio update on Windows couldn't recover its launcher, the error only said the launcher wasn't on disk, which hid the real problem. Now it says why recovery failed.
- #12274: their daily compatibility check had failed every morning since two new test files landed, because those files didn't skip on machines without PyTorch. Fixed them, and added a test that catches the same mistake on the pull request that makes it, not the next morning.
- #11142: their embedding code was starting a new GPU check process on every single call. One user's log had 274 of them in about three minutes. I found where it came from and fixed it so it only checks once.
- #10073: on Windows with an Intel GPU, PowerShell was reading the installer's
-dflag as-Debug, so one step of the install had never worked since it was added. Tracked it down and fixed it.
- 🟡 3 in review at LlamaIndex (52k★) · #23293 · #23292 · #23281
All three are Windows bugs. Their CI doesn't run the tests on Windows, so I do.
- I write tests. A fix isn't done until there's a test that fails without it.
- When I find a bug, I go check everywhere else the same bug could be hiding.
- I build with Claude, Codex, and try out MANY OTHER LLMs daily, and even some programs I have made to streamline tests, and I'm open about it. It's how I get this much done on my own.
Straight from my 2024 README. Still true, and I'm still a passionate coder and adventure-seeker 🏞️
- 🔧 Creator of Sletcher Systems and Global Defense Network
- 💻 Object-oriented programming
- 🧠 RAG systems (from tiny to industry level)
- 🤖 LLMs and Uncensored LLMs
- 🚣♂️ Agentic reasoning crews and tools
- 📞 Function calling
- 📊 Data science, forecasting, time series, ontologies, mapping (10M+ lines)
- 🌐 Full stack apps and machines
- 📡 Real-time communications networks
- 🔒 Cybersecurity projects
- 📈 Smart contracts
- 🔑 Hexadecimal encryptions
- 📄 LaTeX PDF generation
- 📊 Multimodal models
- 💾 Memory and thread script management
- This profile looks quiet. Most of my product code lives in private repos on @banditofsmoke. Happy to walk you through any of it on a call.
- Timezone is UTC+2. Won't fix. I overlap with Europe all day and the US in the morning, so it's more of a feature.
- Doesn't do teaching jobs. Also won't fix. I don't want to teach anymore, I want to code and build.
📬 wsletcher@gmail.com
Let's connect and build something amazing together!
☕ Like what I build?