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William Peytz

About

I'm an AI engineer and startup builder based in Copenhagen. I'm currently doing my MSc in Human-Centered AI at the Technical University of Denmark, where my coursework has taken me through deep learning, computer vision, computer graphics, and X-Tech entrepreneurship.

Portrait of William Peytz

What I care about is the gap between an interesting model and a product someone actually wants to use. That's pulled me toward rapid prototyping, full-stack development, and shipping AI systems with real users — adaptive learning platforms, voice agents, anomaly detection pipelines.

Currently

  • Cofounding Stemma — a Danish-speaking AI phone assistant for inbound calls (scheduling, bookings, sales). I designed and deployed the real-time ASR → LLM → TTS voice pipeline and we're running pilots with live customers.
  • Studying at DTU — Deep Learning, Computer Vision, Computer Graphics, X-Tech Entrepreneurship.

Previously

  • Cofounded Simbolic (2025–2026) — infrastructure for orchestrating engineering simulations across tools.
  • BSc in Artificial Intelligence and Data at DTU. Thesis on adaptive learning systems, which became EloQuiz.dk.
  • Math tutor at Toptutors. IT & legal assistant at Mette Klingsten Law Firm, where I automated CRM and document workflows.

Toolkit

Mostly Python (PyTorch, Flask, FastAPI, scikit-learn) and TypeScript/JavaScript (Vue, React). Comfortable with Docker, Firebase, Supabase, and shipping on Vercel. I work with LLMs, voice pipelines, and the OpenAI API daily.

Get in touch

The fastest way to reach me is by email. You can also find me on GitHub and LinkedIn.