Development PracticesDevelopment Practices
Lunch Talk40min
BEGINNER

Engineering Lessons from Working on Software Older Than Me

A session on engineering lessons from maintaining and scaling legacy PDF technology, covering compatibility, performance, security, testing, and interoperability. It shows how mature systems teach resilient software design and highlights the invisible challenges behind reliable user experiences.

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Guust Ysebie
Guust YsebieApryse

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Thursday, October 8, 12:55-13:35
TBA 2
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What do you learn after spending years maintaining and evolving a technology that predates modern programming languages, cloud platforms, and smartphones?

This session explores real engineering challenges encountered while building PDF technology at scale, from compatibility and performance to security, testing, and interoperability. Through a series of stories and hard-earned lessons, you'll see why mature systems can be some of the best teachers for designing resilient software and why the hardest problems are often the ones users never notice.
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Guust Ysebie

Guust Ysebie

Apryse

Belgium

Software engineer at Apryse, specializing in PDF technologies and the iText SDK. With nearly 7 years of experience in backend development, he works on core PDF internals, standards compliance.