I build systems that make repetitive work disappear.
I'm Jan-Louis Reynders — a freelance systems builder focused on automation, data tools, and custom desktop applications. I work with small businesses, engineering firms, and anyone who has a manual process that takes too long or introduces too many errors.
My first client was GeoCalibre, a geotechnical engineering firm. I built them a PDF data extraction tool that replaced 20+ hours of manual data entry per week with a single-click export. That project shaped how I think about every engagement: understand the real problem first, build the simplest thing that solves it, then deliver something the whole team can actually use.
I work primarily in Python, packaging tools as standalone Windows desktop apps using PyInstaller — no installation, no dependencies, no training required. Just double-click and go.
I learn your workflow before writing a line of code. The right solution only comes from knowing the actual problem.
You get a working prototype early. Real feedback with real data — not a spec document nobody reads.
I build exactly what solves your problem. No bloat, no features you didn't ask for, no frameworks for the sake of it.
Production-ready tools with a professional finish. Documentation included. I'm available for tweaks after delivery.