Noah van Lienden

operator & founder

Noah van Lienden

Thinking about the UX of complex AI products.

about me ↓

TL;DR

Current

Building Stacks, an agentic accounting platform for enterprise. On the side, building Ditto, a personal project for tone-aware writing.

Prior

Previously co-founded Omen and was Founder in Residence at Antler. Graduated cum laude from UvA and RSM. Had my first business acquired at 18.


Most AI products today are a chatbox bolted onto a model. The work I want to do is the step after: interfaces and experiences that build themselves around the person using them. Generative UI, personalization, voice modeling.

I care about UX more than is probably reasonable. A model can be brilliant and the thing wrapped around it still miserable to use. That gap, between the model doing the work and a person actually getting something usable, is what I care about.

For most of software’s history you shipped one interface to a million people, because that’s all you could do. Once a model can compose an experience in real time for one specific person, that constraint is gone. I feel like most products haven’t caught up to this yet.

That’s most of what Ditto is for me: pulling someone’s writing voice out of what they’ve already written, then steering rewrites that actually sound like them. Sounds simple. It isn’t. LLMs are trained on language and still weirdly bad at sounding human. Omen was the same instinct in eCommerce, the page rearranging itself around whoever was on it.

Products shouldn’t be built around one person, either. The ones that create real value are collaborative, where the interface holds the context a group shares instead of making everyone rebuild it in their own head.

So why does every AI product collapse into a chat window? Chat is great for input. It’s how people naturally say what they want. It’s worse for output. Nobody wants their dashboard as a conversation. Dense information wants lists, charts, layout. The future isn’t a chat layer over everything. It’s interfaces that follow what I’m doing in the moment, with the model doing the real work underneath, that are a genuine delight to use.

Work

  • Stacks logo
    2026 — present

    Stacks

    Founders Associate · Amsterdam

    Stacks has raised $35M to date to build the agentic accounting platform for enterprise. Covering product, design, growth, frontend, branding, marketing, hiring, GTM, video editing, and whatever else needs doing.

  • Antler logo
    2025 — 2026

    Antler

    Founder in Residence · Amsterdam

    Chosen as one of the top 100 founders in Europe out of 10,000+ applications. Joined the first ever Antler ONE residency: the continent's most exclusive early-stage accelerator.

  • Omen logo
    2025 — 2025

    Omen

    Co-founder · Amsterdam

    Redefining eCommerce growth by turning every visitor into a customer. Built and scaled growth technology for online retailers. Our way of moving towards generative UI. Personally worked on all frontend, NLP and UX of the platform.

  • Dutch Schools Debate College logo
    2025 — 2025

    Dutch Schools Debate College

    Head of Finance · Netherlands

    In charge of the full yearly budget (~€80k) and subsidy allocation. Key activities: fundraising, budgeting, and financial closing. DSDC is a non-profit; my role was a volunteer position.

  • Effectory logo
    2024 — 2025

    Effectory

    Sales Team Assistant · Amsterdam

    Helped with lead acquisition and demo building for clients anywhere from €5k to €250k ARR.

  • Hestia Community logo
    2021 — 2022

    Hestia Community

    Co-founder & Director · Haarlem

    Hestia Community employed over 25 tutors and supported over 180 high school students. Led day-to-day management, HR, finances, and customer relationships. Acquired by BLIJLES; I was 18.

Skills

Languages
TypeScript · CSS · Swift · SQL
Frameworks
Next.js · React · Tailwind · SwiftUI
Tools
Figma · Linear · Vercel · Git · Docker · DaVinci Resolve · Claude Code
Other
Animation · Design systems · AI tooling · Startups

Where I studied

  • Rotterdam School of Management, Erasmus University logo
    2024 — 2025

    Rotterdam School of Management, Erasmus University

    Master's, Business Information Management

    Grade: 4.0 (Dutch system: 8.4 / 10.0), cum laude. Selected for the Honours Programme.

  • University of Amsterdam logo
    2020 — 2023

    University of Amsterdam

    Bachelor of Business Administration (BBA), Economics

  • Loyola University New Orleans logo
    2022 — 2022

    Loyola University New Orleans

    Exchange Program, Multi-/Interdisciplinary Studies

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Let's talk.

Always up for a conversation, especially with people working on something actually interesting, or thinking about the same problems. Meeting people is most of the fun.