Typical MVP delivery — 7 days/Priced and agreed before it starts/Taipei · Eindhoven · Remote/You own the code and the cloud account/Reply within 1 business day/
003 / Work

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.

01

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.

Scale
2025
6 years
02

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.

Product
2026
Months, not years
03

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.

Launch
2023
50+ games
04

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.

AI
2025
15+ agents
05

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.

Product
2016
12
06

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.

Geospatial
2019
Draw → yield
07

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.

Web3
2021
1M+
08

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.

Platform
2026
4
09

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.

SaaS
2026
7 networks
10

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.

Product
2026
2 surfaces
11

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.

AI
2026
Solo
004 / Start

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.