Guust Ysebie

Talks and presentations

I speak about PDF engineering, document systems, performance, standards, and the engineering decisions behind production-grade document workflows.

Topics I speak about

Selected talks

Devoxx Belgium 2026: Engineering Lessons from Working on Software Older Than Me

A lunch talk on what years of maintaining PDF technology, which predates smartphones, cloud platforms and most modern programming languages, teach about resilient software design. Real stories about compatibility, performance, security, testing, and interoperability at scale, and why the hardest problems are often the ones users never notice.

Microsoft Build 2026: Design systems for every user, including people and LLMs

A pre-recorded session at Microsoft Build 2026 on how accessible PDF documents are no longer just a compliance checkbox but are valuable to make your documents better understandable for LLMs.

View session details

GIDS 2026 (India): Your Users Are Not Just Human: Designing Systems for People and LLMs

A talk about designing modern systems for both human users and AI-assisted workflows, with a focus on product thinking and implementation trade-offs.

PDF Days Europe 2025: Enterprise-Grade HTML 2 PDF

A technical poster presented at PDF Days Europe 2025, on what it takes to turn HTML into PDF reliably at enterprise scale.

Download the poster (PDF)

Good fit for audiences who care about

Invite me to speak

If you're organizing an engineering event, internal meetup, architecture session, or product-focused technical talk, feel free to reach out.