kenuxi

I build the operating system for your business.

Bookings, members, billing, communication, website and AI, connected in one place. Product engineer in Berlin – full-stack, web and mobile.

See the workBook a call

Selected work

Products I co-founded that businesses run on every day, and platforms I built for clients.

padelko.com
Volea + Padelko – The operating system for padel and tennis clubs.
Own productCo-founder2025 – present

Volea + Padelko

The operating system for padel and tennis clubs.

Bookings, school, tournaments, matchmaking, invoicing, email, analytics and shop in one panel. Pilot club Padelko (10 courts, Bizkaia) went from three people and a spreadsheet to one system – website included.

players
5,500+
players
students
400+
students
bookings
9,000+
bookings
  • TypeScript
  • React
  • TanStack Start
  • Hono
  • Drizzle
  • Postgres
  • Better-Auth
  • Stripe
  • Astro
  • Cloudflare Workers
  • Coolify
  • Hetzner
volea.club
meetcosi.com
Cosi – From brief to finished treatment, in one place.
Client workFreelance product engineer2026 – present

Cosi

From brief to finished treatment, in one place.

AI workspace for commercial directors, treatment designers and producers. Save references with a Chrome extension, find them again with AI search, get first-draft pages from the brief and share review and presentation links with agency and client.

  • TypeScript
  • React
  • TanStack Router
  • Supabase
  • pgvector
  • Trigger.dev
  • Cloudflare R2
  • Stripe
  • Chrome extension
meetcosi.com
arqueo.app/en
Arqueo – Bookkeeping on autopilot for hospitality and retail.
Own productCo-founder2026 – present

Arqueo

Bookkeeping on autopilot for hospitality and retail.

AI reads invoices from a photo, email or Telegram, reconciles the bank account, flags supplier price rises and bundles the monthly package for the accountant. In use at Padelko and Vene's Burguer.

Live at Padelko and Vene's Burguer

  • TypeScript
  • React
  • TanStack Router
  • Hono
  • Drizzle
  • Postgres
  • Claude (vision)
  • Cloudflare Pages
  • Coolify
arqueo.app
Courseaucreateupon.ai
ReactRemixTypeScriptPython
Client workFreelance product engineerJul 2025 – present

Courseau

AI course platform – through its acquisition by LearnUpon.

LLM course generation (Python/Modal), a real-time collaborative editor built on Tiptap, and stability and analytics through the acquisition. The product lives on as CreateUpon.

Acquired by LearnUpon · Nov 2025

createupon.ai
traube.club
Traube – Meet Friends, not Screens.
Own productCo-founder2025 – present

Traube

Meet Friends, not Screens.

Social app for real-life meetups in Berlin – a live map of events, see where friends are going, a chronological feed with no algorithm and no ads. Plus tools for organisers with RSVPs, analytics and automatic event imports.

live in the stores
iOS + Android
live in the stores
  • TypeScript
  • Expo
  • React Native
  • Next.js
  • Hono
  • Drizzle
  • Postgres
  • Cloudflare R2
  • Claude agents
  • Turborepo
App StoreGoogle Playtraube.club

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What I offer

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hello@kenuxi.com