Krisztián Papp
Principal Software Engineer @ Diligent
Budapest, Hungary
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Krisztián is a principal engineer at Diligent with over a decade of hands-on experience in creating and maintaining software. Currently he is leading the movement of a diverse set of products towards the cloud. He is the founder of the Letscode.hu community, creating a supportive environment where individuals can thrive, share their knowledge, and collectively contribute to the advancement of technology.
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Topics
From Atoms to Units: Rethinking What We Test
We once believed atoms were indivisible — until we learned they weren’t. Unit testing has followed a similar path. For years, we’ve treated “unit” as something small and sacred — a single class, a method, a function. But in real systems, that tidy definition often doesn’t hold up.
This talk is about what happens when the textbook rules meet messy, real-world code. We’ll rethink what a “unit” really is, explore better ways to test meaningful behavior, and question some long-standing assumptions. Along the way, we’ll take a peek at how AI might help us write better tests — or at least ask better questions.
If you’ve ever wondered why your tests don’t quite match the way your code actually works, you’re not alone. Let’s talk about it.
Continuous failure - Why do we make our lives hard?
This talk is a deep dive into the chaos of a real project that derailed itself through complexity and avoidable mistakes. Whether you’re a developer, team lead, or architect, this talk will challenge you to rethink how we approach software development—and inspire you to make simplicity a priority.
Architecture Decision Records - How not to get lost in the past
The talk shares practical insights from real experiences with introducing Architecture Decision Records (ADRs). Attendees will learn key lessons, gain strategies for overcoming common challenges, and receive solutions to help with ADR implementation.
DevFest Berlin 2025 Sessionize Event
Øredev 2025 Sessionize Event
JavaCro'25 Sessionize Event
Working Software 2025 Sessionize Event
Devoxx UK 24
Architecture Decision Records - How not to get lost in the past
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