# Jeremia Fourie

> Jeremia Fourie is a software engineer in Pretoria, South Africa — co-founder of Exequtech, shipping a field-service SaaS and its offline-first Android app.

## Projects

- [Exequtech OS](https://jeremiafourie.tech/projects/exequtech-os/): Multi-tenant field-service SaaS — job cards, quoting, billing and assets in a windowed desktop-OS browser interface. Co-founded; I lead the web platform.
- [Exequ-Jobs](https://jeremiafourie.tech/projects/exequ-jobs/): Offline-first Android app for field technicians: work orders, photos, signatures and time tracking that keep working with zero signal, then reconcile cleanly.
- [CogniFlight Edge](https://jeremiafourie.tech/projects/cogniflight-edge/): In-cockpit pilot-fatigue detection on a Raspberry Pi. I led the edge team — built the circuitry, guided the device architecture, sourced the hardware.
- [CogniFlight Cloud](https://jeremiafourie.tech/projects/cogniflight-cloud/): Ground station for an aviation fatigue-monitoring capstone: MQTT telemetry, time-series analytics and a desktop-OS dashboard UI I built for operators.
- [Die Bosveld Ticketing](https://jeremiafourie.tech/projects/bosveld-ticketing/): Ticketing for a real events venue: QR + NFC gate check-in built as a deliberate no-code system with Gerhard van Staden — designed from three years at the gate.
- [Honours Dissertation — Metacognitive Calibration](https://jeremiafourie.tech/projects/honours-dissertation/): My BComp Honours dissertation asks whether developers understand AI-generated code as well as they think they do — a scoping review, written in LaTeX from Neovim.

## Writing

- [I tried to build macOS on Linux — I just called it Sway](https://jeremiafourie.tech/blog/from-sway-to-macos/): My Linux laptop went everywhere with me — until I sat on it and it broke in half. The MacBook that replaced it feels like the desktop I was trying to build from Sway, waybar, and dotfiles.
- [Do you understand the code your AI writes? I'm spending a year finding out](https://jeremiafourie.tech/blog/ai-code-overconfidence/): AI-assisted coding makes us feel faster and smarter than the evidence says we are. What psychology already knows about that gap — and why I'm making it my Honours dissertation.
- [How I use Claude Code without becoming its passenger](https://jeremiafourie.tech/blog/shipping-with-claude-code/): AI types most of my code. Staying the driver takes deliberate work: structuring problems, reviewing diffs, and owning outcomes.
- [My workstation: Linux, Sway, Neovim, tmux — and why the terminal is home](https://jeremiafourie.tech/blog/my-workstation/): How I actually work: the Linux + Neovim + tmux setup behind this site, and why a text-first workflow makes me a better engineer.
- [The venue gate is a distributed system](https://jeremiafourie.tech/blog/venue-gate-distributed-system/): Three years scanning tickets at a venue while building its software. Lessons on race conditions, queues, single points of failure, and designing for the person holding the phone.
- [Offline-first isn't a feature, it's an architecture](https://jeremiafourie.tech/blog/offline-first-android-sync/): Building Exequ-Jobs: an Android app for technicians with no signal — local-first writes, a sync queue, presigned uploads, and basement-only bugs.
- [Detecting pilot fatigue in real time on a Raspberry Pi](https://jeremiafourie.tech/blog/pilot-fatigue-on-a-raspberry-pi/): What our capstone taught me about computer vision on a hard compute budget: eye-aspect ratio, sensor fusion, and why the edge had to do the thinking.

## About

- [About](https://jeremiafourie.tech/about/): Background, experience, and education.
- [Now](https://jeremiafourie.tech/now/): What Jeremia is building and learning right now.
- [CV (PDF)](https://jeremiafourie.tech/cv/jeremia-fourie-cv.pdf)

## Elsewhere

- [GitHub](https://github.com/jeremiafourie)
- [LinkedIn](https://www.linkedin.com/in/jeremiafourie)
- [X](https://x.com/fourie_jeremia)
- Co-founder of [Exequtech](https://exequtech.com/about), a South African field-service software company.