Steve Souders & Mark Zeman

Photo taken at beyond tellerrand in  by

SpeedCurve is a small, smart, international team of industry leaders in visualization and performance. They love nothing more than playing with mountains of data and finding simple, meaningful ways to communicate the vital role of fast front-end performance in delivering great user experiences.

Steve Souders

Steve is a pioneer in the world of web performance. Before SpeedCurve, he held positions as Chief Performance Yahoo!, Google's Head Performance Engineer, and Chief Performance Officer at Fastly. Steve "wrote the book" on web performance with High Performance Web Sites, and its follow-up Even Faster Web Sites. He is the creator of many performance tools and services including YSlow, the HTTP Archive, Episodes, ControlJS, and Browserscope. He taught CS193H: High Performance Web Sites at Stanford University and serves as co-chair of Velocity, the web performance and operations conference from O'Reilly.

Steve on Twitter

Mark Zeman

Mark comes from a design background but has always been just as passionate about the code. He founded SpeedCurve in 2013. He is based by the ocean in beautiful New Zealand and has spent 20 years crafting websites and mobile apps.

He is a prominent thought leader in the performance community and popular on the conference circuit where he evangelises the role of design in improving engagement with performance issues. Here is Mark's latest Velocity Conference talk on better performance through better design.

Mark on Twitter

Videos of Steve’s talks