LDEmail

Scroll to play the opening film. Stage dust gathers into a spotlight ring for the TU/e Contest where Stacklink placed second of seventy teams, rises along a trajectory through the Cape engineering work, and settles into the LD mark as Lucas is selected for Antler ONE. What he is building now, and the full record, follow below.

Founder / AI engineer

Lucas Duys

Building Athren, which prepares customs declarations from the shipment email. Antler ONE, September 2026.

What I'm building
Stacklink

TU/e Contest 2026

2nd of 70

€5,500 won across the TU/e Contest prize and The Gate grant.

Cape.io

Agent engineering

500×

More inputs, while runtime fell from 55s to about 8s at 98% accuracy.

Antler ONE

September 2026

1 of ~100

founders selected from about 10,000 applicants across Europe.

Lucas pitching Stacklink on stage at the TU/e Contest 2026 finale
Pitching Stacklink at the TU/e Contest 2026 finale

Software that prepares customs declarations, and files nothing.

I am building Athren with Timothy Thomas, for customs brokers in Germany and the Netherlands. Their work arrives as email: an invoice, a packing list, a bill of lading. Athren turns that into a prepared declaration, every value from a document, a proposed commodity code, and a question for whatever the invoice leaves out.

The declarant still files, because whoever lodges a declaration answers for it, AI or not. It is the rule I keep building around: software does the work, a person decides. We are building it in the Antler ONE cohort that started this September.

Live. Click the screen to use it.

Open athren.nl

The record

  1. 2026

    AI engineering intern

    Cape.io

    Rebuilt agent pipelines around measurable speed, cost, accuracy, and permission boundaries.

    190k 1.2k
    tokens per run, more than 99 percent less
    20 10,000
    inputs per run, from 55 seconds to about 8, at 98 percent accuracy
    Cape.io website

    Python, TypeScript, agents, LangSmith

  2. 2026

    Co-founder

    Stacklink

    Built an EU-sovereign, permission-aware knowledge layer for governed AI agents.

    Designed for customer-owned infrastructure and air-gapped deployment.

    €3,000
    First Runner-Up at the TU/e Contest
    €2,500
    The Gate grant at Kickoff EHV
    Stacklink product interface
    Stacklink answer with cited sourcesStacklink file knowledge viewStacklink SQL connector viewStacklink agent activity view

    TypeScript, Go, Postgres, RAG, ACLs

  3. 2026

    Hackathon builder

    Paris and Amsterdam

    Two working AI products, built in 24 hours and in 6.

    Pitchr.live AI pitch coach

    Pitchr.live

    Rubric scoring, rewritten scripts, and mock investor Q&A in one AI pitch coach. Built from zero in 24 hours at Station F, Paris.

    Visit Pitchr.live
    Lucas pitching Weekly Shop Agent on stage at AI House Amsterdam

    Weekly Shop Agent

    Five agents negotiate meals, dietary needs, and budget into a weekly grocery order. Six hours in Amsterdam, selected to pitch from 80 builders.

    View the code

    Next.js, Claude, ElevenLabs, multi-agent systems

  4. 2024 to now

    BSc Computer Science & Engineering

    TU Eindhoven

    Building production AI systems alongside a full-time computer science degree.

Lucas receiving the TU/e Contest First Runner-Up award on stageLucas interviewed on camera, holding the TU/e Contest trophy
Receiving the First Runner-Up award at the TU/e Contest 2026, then on camera with the trophy
Lucas Duys

Let's talk.

Thirty minutes on a video call, for hiring conversations, founder questions, and hard technical problems. Pick a time, or write.

lucas.duys@gmail.com