about
I'm Koral. I build small, useful systems and keep them running.
Just over a decade in IT — VMware clusters, Windows servers, networking — gradually pulled into scripting, then full-stack, then product work. Today I run a small portfolio of data-driven tools across koralktech.io and its subdomains. This site is the log.
how the projects start
Every project on this site began as something I needed myself — a way to research an affiliate niche faster, analyse a Dutch freelance market without re-reading the same PDF, apply for jobs in three countries without rewriting the same CV ten times. The friction is the spec.
I keep the tools running because I keep using them. The public ones are runnable; the internal ones quietly hold the rest together. AI tools (Claude, ChatGPT, self-hosted Ollama) are part of the workflow, not the headline.
how I work
Friction-first
If a manual process annoys me, that is the spec. No annoyance, no project.
Build for myself first
The first user is me. The product is whatever survives daily use.
Data over intuition
Scores, metrics and trends are how I make decisions inside the tools and outside them.
Ship, then iterate
A working v1 in production beats a beautiful v3 in a branch.
what I'm focused on right now
- →CryptoScope — Trading-rule automation, with hard kill switches.
- →Etsy POD AI — Tightening the 5-signal score, region-by-region calibration.
- →Multi-Country Job Applier — Adding a fourth country and improving the CV-tailoring loop.
- →NL Freelance Market — 2025 → 2026 rate update and the next two service packages.
background
I started in enterprise IT — VMware, Windows Server, networking — which is where I learned to build things that have to keep running. Over time I picked up scripting (PowerShell, Python), then full-stack development (React, Next.js, Flask, FastAPI), and certifications in everything from Cisco networking to Harvard's CS50 data science track.
The transition from IT support to product building was gradual: I kept writing internal tools to automate my own work, until those tools started being more useful than the systems they replaced. The projects on this site are what came out of that path.
elsewhere