kenuxi

Kenneth Roos

Product engineer – full-stack, web and mobile

I build the operating system for a business: bookings, members, billing, communication, website and AI, connected in one place. I co-founded and shipped Volea, Arqueo and Traube end to end – web, native apps, backend and infrastructure – and build AI products for clients. Before that I spent four years at PushMetrics as solutions engineer and product owner, and consulted on data at mobile.de.

Kenneth Roos

Skills

  • TypeScript
  • React
  • React Native / Expo
  • Node.js / Bun
  • Hono
  • Next.js
  • Astro
  • Postgres
  • Drizzle
  • Python
  • LLMs & AI agents
  • Cloudflare
  • AWS
  • GCP / BigQuery
  • dbt
  • Looker

Work experience

  1. Volea + Arqueo

    2025 – present

    Co-founder

    Berlin / Bizkaia

    • Built Volea, the operating system for padel and tennis clubs: bookings, school, tournaments, matchmaking, billing, communication, analytics and shop.
    • Pilot club Padelko runs on it daily: 5,500+ players, 400+ students and 9,000+ bookings.
    • Rebuilt the platform on a self-owned stack (Hono, Drizzle, Postgres, TanStack Start, Cloudflare Workers) with multi-tenant row-level security.
    • Built Arqueo, AI bookkeeping for hospitality and retail: invoice extraction with vision LLMs, bank reconciliation and a monthly package for the accountant.

  2. Traube

    2025 – present

    Co-founder

    Berlin

    • Social app for real-life meetups in Berlin, live on iOS and Android.
    • Expo / React Native app, Next.js web app and a Hono API; AI-assisted event import from text, links and posters.

  3. Cosi

    2026 – present

    Freelance product engineer

    Remote

    • AI workspace for commercial directors. Built team review and share flows, organisation billing with Stripe, Google Drive import and the migration of all media to Cloudflare R2.

  4. Courseau (now CreateUpon)

    Jul 2025 – present

    Freelance product engineer

    Berlin

    • AI course-authoring platform, acquired by LearnUpon in Nov 2025 and relaunched as CreateUpon.
    • LLM course generation in Python on Modal, a real-time collaborative editor on Tiptap, and stability and analytics through the acquisition.

  5. Nest Seekers International

    Mar – Jul 2025

    Freelance product engineer

    New York (remote)

    • CRM and analytics integrations, automated listing feeds to real-estate platforms, and modernisation from Angular to React / HTMX (Django backend).

  6. PushMetrics

    2021 – Dec 2024

    Solutions engineer → Product owner

    Berlin

    • B2B data-reporting SaaS; a platform serving S&P 500 companies including T-Mobile and Schwarz Group.
    • Set product strategy with the CEO as product owner, built full-stack features, and designed solutions and automations for enterprise clients.

  7. mobile.de

    Jul 2022 – Apr 2024

    Data & analytics engineer (consultant, via PushMetrics)

    Berlin

    • Analytics through the move from eBay data centres to Google Cloud: dbt models in BigQuery, migration from Tableau to Looker, and data governance across teams.

Education

  1. Technische Universität Berlin

    2018 – 2022

    M.Sc. Information Systems Management (Wirtschaftsinformatik)

    Berlin

    • Built a database system from scratch in Java; event-based computer vision in C++ / ROS; drone flight-path algorithms with Fraunhofer (SkySeed).

  2. Université Montpellier II

    2014 – 2015

    Bachelor, International Business Management (double degree)

    Montpellier

  3. Utrecht University

    2011 – 2014

    Bachelor, Economics and Business Economics

    Utrecht

Languages

English Native / bilingual·German Fluent