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EUCLIDE
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Founder · Paris

Duhan Koyuncu

I spent ten years on construction sites. Today I build tools for engineering teams and help them use AI in their day-to-day work. I’ve supported more than 200 engineers inside a global firm. EUCLIDE verifies construction documents and BIM deliverables against their source: every finding carries its page.

What I do, in plain terms

Find the right problem.

I sit with the people doing the job and spot the tasks worth automating, the ones that eat hours and follow rules.

Build the tool.

I ship it to production, and I build it so you can see what it did. Every claim carries its page.

Get people to use it.

I train the team, listen to what causes difficulty and adjust the tool after they start using it.

The arc
2021 → 2026 · Styly

Co-founder, product & strategy

Built and ran an AI product end to end. Paying users in 59+ countries.

2021 → 2022 · Assystem

Digital deputy project manager

Bridge between engineering, BIM and delivery on large infrastructure programs.

2014 → 2020 · field

Site & construction lead

Railways, bridges, tramways, water plants across Algeria, Ethiopia and Saudi Arabia.

What I believe

A team needs to check an answer, correct a mistake and know when to ask a colleague. I pay attention to those steps when building and testing a tool.

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