DevConf.CZ 2026

How to Survive Your First Tech Talk (Without a Kernel Panic)
2026-06-19 , E105 (capacity 70)

Giving your first conference talk is terrifying. You worry about forgetting what to say, embarrassing yourself in front of experienced engineers, or freezing in front of a room full of strangers.

I know that feeling well — because my first talk didn’t go well. I rushed the preparation, overcomplicated the slides, panicked halfway through the talk (around minute two), and forgot half of what I wanted to say. At one point I spent almost a full minute staring at a slide saying “ehmmm… ehmmm…” while 80 engineers watched. To make things even better, the talk was supposed to be given by two speakers — but the day before the conference my co-speaker told me he couldn’t make it.

It felt like a failure. But it taught me something important: your first talk doesn’t need to be perfect — it just needs to happen.

In this talk I’ll share that story and the lessons I learned so others can prepare their first talk, survive the stage, and maybe even enjoy it.


Experience level: Beginner - no experience needed

Mario Fernandez is a Senior Software Engineer at Red Hat, working on the Observability team. He builds scalable telemetry solutions for Kubernetes and OpenShift. With over 10 years of international experience, he is passionate about performance optimization, system reliability, and clean, maintainable code. Before joining the Observability team, he contributed to Red Hat’s Telco 5G stack, focusing on low-latency workloads for edge computing.