Everything we've shipped
Each entry is a written account of what was built, what it ran on, and what happened next.
Rovak Solutions is led by Roy van Kaathoven. These are the systems he has built and led, at his own companies and for clients, going back to 2009.
Live-streaming platform
CTO · 2019–2025
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.
Wellness platform for creators
AI-first · Creator platform
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'm the founding engineer, building it from scratch with a tiny, AI-first team.
Online gaming platform
Nightpixel · Lead engineer · Game & payment integration
Nightpixel is a non-adult gaming platform in the spirit of Nutaku, where players discover and play online games with a shared token wallet. I led the engineering, built the game-server and payment integrations, shipped a native mobile app store, and coordinated launch with game studios in China.
Sakurai
Nest.js · Slack · MCP
An in-house, Slack-driven AI agent platform I built to automate internal business processes by turning company services into MCP tools and giving every team one assistant instead of five disconnected models.
Advanced-Forms
Quadira · C# · .NET
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.
Autarco Helios
Autarco · React · TypeScript
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.
Seedit
Author · TypeScript · Web3
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, and over a million wallets created across four blockchains.
Companion AI
Solo full-stack & AI · Cloudflare edge · 2026
A multi-tenant AI-companion social platform with autonomous AI personas with persistent memory, real-time text and voice chat, AI media generation, and a virtual-gift economy, all running serverless on Cloudflare's edge from a single shared backend powering several independently branded sites.
Social publishing platform
Socialog · Founder & full-stack engineer · Cloudflare edge · 2026
Socialog is a social-media scheduler that plans, schedules and publishes one post to X, Instagram, Threads, LinkedIn, YouTube, Pinterest and Paragraph. I built it solo on TanStack Start and Cloudflare Workers, with a cron-driven publish engine, one adapter per network, and a full MCP server and REST API so AI agents can drive it.
Bikkel
Bikkel · Founder & full-stack · Strength-training tracker on Cloudflare
Bikkel is a strength-training tracker with reusable routines, a set-by-set workout logger, body measurements and progress charts, wrapped in an industrial "cast iron" design. It's two surfaces over one shared core (a phone-first training app and a desktop planning hub), it ships as a single Cloudflare Worker, and it has a built-in MCP server so you can point an AI coach straight at your own training data. Built solo, end to end.
MandarinAI
MandarinAI · Solo founder · AI-assisted Chinese learning
An AI-assisted Mandarin learning platform built solo. FSRS spaced repetition fused with graded stories that Claude writes from the exact words your review deck says are due, plus neural pronunciation and HSK-aligned reading, all running on a single Cloudflare Worker.
Tell us the one thing it has to do.
If it's sharp enough to prove in a week, we'll say so and give you a date. If it isn't, we'll tell you that too, along with what we'd build first instead.