Build resilient systems at scale
28–30 October 2015 • Amsterdam, The Netherlands
Guy Podjarny

Guy Podjarny
Founder and CEO, Snyk

Website | @guypod

Guy Podjarny is a cofounder and CEO at, where he focuses on securing open source code. He was previously CTO at Akamai and founder of He also worked on the first web app firewall and security code analyzer. Guy is a frequent conference speaker, the author of Responsive & Fast, High Performance Images, and the upcoming Securing Third Party Code, and the creator of Mobitest. He also writes on and Medium.


11:30–13:00 Wednesday, 28/10/2015
Location: G102/103
Guy Podjarny (Snyk)
Average rating: ****.
(4.33, 33 ratings)
The web is becoming increasingly image rich, with image weight making up the majority of page weight and growing fast. If not optimized, the performance impact of these images can make a site unusable - even if it's beautiful. This tutorial will split image optimization into three parts - compression, loading, and operations - and offer practical tips for tackling each. Read more.
10:00–10:15 Thursday, 29/10/2015
Location: Auditorium
Guy Podjarny (Snyk), Assaf Hefetz (Snyk)
Average rating: ****.
(4.31, 97 ratings)
A modern web application today is made up of 90 percent third-party code. We use third-party modules, platforms, domains, and more to get our applications running quickly and well. However, we often overlook the threat involved in running someone else’s code as though we wrote it ourselves. Each such piece of code may be malicious, compromised, or have vulnerabilities - and we’d be none the wiser. Read more.
11:50–12:30 Friday, 30/10/2015
Location: G106/107
Average rating: ****.
(4.04, 28 ratings)
When a user opens Facebook, he wants to post a picture. When she logs into her bank, she wants to see her balance. Security is not front of mind, and if it gets in their way - they’re likely to look for a shortcut or simply walk away. And yet, we consistently push security decisions to users. This talk will discuss how to build experiences that are actually secure, and yet not alienate users. Read more.