SJA Ondernemingen · Utrecht & Seoul

Hi, I'm Senne.I help companies run on AI.

Training for your team, one workflow automated end to end, or a custom AI tool built for how you already work. Fixed scope, fixed price.

Book a 20-minute call See the work

Fixed scope, fixed price · Utrecht and Seoul · Dutch, English, Japanese

Senne De Maa

The company

SJA Ondernemingen

The registered business, founded January 2026 in Utrecht. Rei Japanese, Social Commerce Europe and the rest are its trade names.

Work

Your team, using AI properly within a month.

For owner-run companies in the Netherlands and foreign-owned SMEs in Seoul. I teach first, then automate the one workflow that costs you the most hours, then build what is still missing.

Offers and booking
  1. 01Learnhalf-day session for your team
  2. 02Automateone workflow, delivered in a week
  3. 03Builda custom AI tool, scoped per project

Also under SJA Ondernemingen

Proof

Three things that exist and can be checked.

Instead of a list of skills. Each one links to the real thing.

  1. Dagger Coffee logoJul 2026

    Dagger Coffee

    weekly stock count automated

    Specialty coffee, two locations in Utrecht. The weekly Tuesday stock count now runs as an automated flow. First client, July 2026.

    Still from the demo video: three count forms feeding a clean Google Sheet and a Wednesday digest
    From the demo video: the count forms, the sheet, the Wednesday digest.
  2. Rei Japanese logoSince Oct 2026

    Rei Japanese

    18 reels a week, built by agents

    The Japanese-learning brand runs on a pipeline I built: scripts, video builds, scheduling and daily inbox checks happen without a session.

    ONE WEEK OF REI JAPANESE · NO SESSIONMonday routinewrites the weekCloud build18 long + 3 shortGates3 checks per reelScheduler3 slots a dayInstagramYouTubeFacebookTikTokDaily inbox check · 08:00 KST
  3. 2026

    PawScan

    an AI pet health check, built end to end

    Take a photo of your pet and get an instant AI read on what you are looking at, no sign-up. Designed, built and shipped solo at pawscan.ai; parked since, but it runs.

    Screenshot of pawscan.ai: Is your pet okay? Take a photo, get an instant AI health check.
    pawscan.ai as it runs today.

In the room

Teaching the teachers.

HU Utrecht, 25 August 2026. The International Business faculty asked what their students are really doing with AI, so I showed 28 lecturers: a working build, made live on stage, with the four habits behind it.

Senne De Maa speaking at a lectern in an HU Utrecht lecture hall, slide reading Output = Knowledge x Experience x Attitude
HU Utrecht, 25 Aug 2026: the opening slide.
Senne De Maa presenting to HU International Business lecturers, slide listing four working habits
The four habits, none of them clever.

Two months earlier

Teaching the students.

HU Utrecht, 12 June 2026. A guest lecture for International Business students with one spine: from idea to product, live. The finale was a personal website for a volunteer from the room, built on stage in minutes.

Senne De Maa presenting to HU International Business students, screen reading From idea to product. Live.
HU Utrecht, 12 June 2026: from idea to product, live.
The personal website built live on stage for a student volunteer
Built on stage for a volunteer, in minutes.

Experience

  1. Jan 2026 – now

    SJA Ondernemingen

    Founder

    My registered business in Utrecht. The AI consultancy, Rei Japanese, Social Commerce Europe and the tutoring are its trade names; everything on this page runs under it.

    • AI consultancy: first client Dagger Coffee (Jul 2026); guest lectures at HU Utrecht for students (Jun) and 28 lecturers (Aug)
    • Rei Japanese: a Japanese-learning brand that runs on an autonomous content pipeline, 18 reels a week
    • Private tutoring in economics and business economics for HAVO and VWO students since Sep 2026 (via Lyceo, Mar to Sep 2026)
  2. Feb – Jul 2025

    Purchaise.ai

    Marketing intern

    AI-agent start-up with its team in Kosovo; I worked directly under the founder.

    • Wrote the market-entry plan for Italy
    • Daily meetings with the team in Kosovo; met retail and platform leaders along the way
  3. Feb 2023 – Mar 2025

    Sushi San

    Guest service team lead (part-time)

    Restaurant job alongside school and the first year of the degree.

    • Led the floor team on shift

Education

  1. Sep – Dec 2026Now

    Kookmin University, Seoul

    Exchange semester, business minor

    • Organizational Behavior, Management Science, Business Law, Philosophy, Korean
  2. 2023 – 2027 (expected)

    HU University of Applied Sciences Utrecht

    BBA International Business

    • Main-phase average 7.8
    • Class representative
  3. 2022 – 2023

    STS Education Group, Japan

    Exchange year at a Japanese high school

    • Daily classes in Japanese after finishing Dutch secondary school

Twenty minutes

Tell me the workflow that costs you the most hours.

You get a straight answer on whether AI can take it, what it would cost, and how long. No deck, no pitch.

Book a 20-minute call

Contact

Or write.

Tell me what you want AI to take off your plate. You get an answer from me, not an auto-reply.