Available for select projects

I design and build production systems, end to end.

I ship production software with small, AI-augmented teams that move like big ones. Independent engineer, architect, and CTO — backend, frontend, and infrastructure, with a bias toward shipping things that are simple, scalable, and that actually work.

12+
Years shipping software
300k+
Monthly users scaled
CTO
& technical founder
Roy van Kaathoven — portrait
Selected work

Shipping for ambitious teams

A decade of owning systems end to end — from architecture and infrastructure through to the product surface.

Live-streaming platform
Scale

Live-streaming platform

An interactive consumer live-streaming platform I co-founded and led as CTO — built from the first commit and grown over six years into a global product, a company of around fifty, and an acquisition.

CTO · 2019–2025Case study ↗
Wellness platform for creators
Product

Wellness platform for creators

Babage — a holistic wellness platform where creators monetise their practice through subscriptions, courses, and direct sales, with a platform-run brand channel as the marketing engine. I lead the engineering, building it from scratch with a tiny, AI-first team.

Babage · AI-first · Creator platformCase study ↗
Sakurai
AI

Sakurai

An in-house, Slack-driven AI agent platform I built to automate internal business processes — turning company services into MCP tools and giving every team one assistant instead of five disconnected models.

Nest.js · Slack · MCPCase study ↗
Advanced-Forms
Product

Advanced-Forms

n8n for the enterprise — a visual document-output platform where business users design their own output, rules, distribution and archiving on top of big Microsoft Dynamics, AX and SAP deployments. I rebuilt the core, built the visual designer, and led the product.

Quadira · C# · .NETCase study ↗
Autarco Helios
Geospatial

Autarco Helios

Web-based solar panel configurator for Autarco — draw your roof on a satellite map and get an instant panel layout and yield estimate, powered by in-browser geospatial calculations.

Autarco · React · TypeScriptCase study ↗
Seedit
Web3

Seedit

A multi-chain crypto tipping bot for Telegram that gives every community member a custodial wallet and lets them tip, airdrop, and trade tokens with a single chat command — over a million wallets created across four blockchains.

Author · TypeScript · Web3Case study ↗
Stack

Tools I reach for

TypeScriptRustReactViteRedisAWSTerraformAnthropicDynamics
JavaScriptSQLNext.jsNode.jsGraphQLDockerCI/CDRAGWebhooks
GoPythonTailwindPostgresgRPCKubernetesOpenAIEvals
Contact

Let's build something ambitious.

Have a hard problem and want someone who can own it technically — from architecture through deployment? Let's talk.

Email
royvk@pm.me
Based in
Taipei, Taiwan · Remote