Harry Roberts
Harry Roberts is an independent Consultant Web Performance Engineer from the UK. He helps some of the world’s largest and most respected organisations find and fix their site-speed issues.
He is both a Google- and a Cloudinary Media-Developer Expert, and has consulted for clients from the United Nations to the BBC, General Electric to the Financial Times, and a whole host more. He is also co-chair of performance.now(), the web performance conference for professionals.
When not doing client work, he writes, teaches, and speaks about the entire gamut of front-end performance. When not doing work at all, he’s probably out on his bike.
Michal Mocny
Michal Mocny has been part of the Canadian Google Chrome team for 14 years, spending the last 5+ years focused on Speed Metrics. He was the Tech Lead for the Interaction to Next Paint (INP) metric, serves as one of the maintainers of the Core Web Vitals implementation, and contributes to the implementation of Web Performance APIs in Chromium. His current efforts include work on implementing Soft Navigation measurement. Outside of his professional role, he is a father to three boys and enjoys spending his time hiking, sailing, and woodworking.
Umar Hansa
Umar is a web developer, public speaker and content creator based in London. Umar has a focus on writing tips, tutorials and documentation for the modern web platform. One of the projects he plans to explore and share with the community is using modern tools and technologies for a better development and debugging workflow.
Vinicius Dallacqua
Lead developer, obsessed with browser internals, user experience and performance. I love working with performance and as of late AI workflows to empower applications to a new level. As a side project I am building a devtool called PerfLab and a performance expert agent called PerfAgent to express my vision of a modern tool focused on performance for developers of all expertise levels, leveraging AI and Web APIs to bring actionable insights to developers.
Tammy Everts
Tammy Everts is chief experience officer at SpeedCurve, where she helps companies understand how visitors use their websites, and a co-chair of performance.now(). Tammy has spent the past two decades studying how people use the web. Since 2009, she’s focused on the intersection between web performance, user experience, and business metrics. Her book, Time Is Money: The Business Value of Web Performance from O’Reilly, is a distillation of much of this research. She also cocurates (with Tim Kadlec) WPO Stats, a collection of performance case studies.
Michael Hladky
Michael Hladky is a Google Developer Expert (GDE), Microsoft MVP, and Nx Champion with a deep focus on web performance and scalability. As CEO of PushBased, he helps teams and organizations design streamlined architectures and build blazing-fast applications. With years of experience as a trainer and consultant, Michael is passionate about empowering developers through practical expertise and high-impact solutions. A dedicated community contributor, he speaks at international conferences, leads workshops, and organizes events to support and inspire fellow developers.
Andy Davies
Andy is a Web Performance Consultant at SpeedCurve, where he helps organisations to measure and improve the speed of their sites.
He stumbled into web performance in 2008 while launching an online education service and quickly ran into the challenge of delivering rich content to schools over congested networks.
Since 2012 he's focused on web performance full time and has worked with a wide range of organisations from international retailers and news publishers to financial services and FMCG brands.
Ethan Gardner
Ethan Gardner is a full-stack engineer and educator with expertise in front-end development, focused on creating high-performance web applications, identifying process efficiencies, and elevating development teams through mentorship and teaching. He has worked as an engineer and technical leader in industries such as media, advertising, hospitality, and the public sector. He currently works at Flexion and is also developing courses to help engineers level-up their skills.
Marcy Sutton Todd
Marcy Sutton Todd is a Senior Engineer on the Frontend Infrastructure team at Khan Academy, where she works on design systems, accessibility, and test automation. Throughout her career, Marcy has shared what she’s learned about web accessibility to show how we can all contribute easy wins and lasting contributions. As an independent web developer, Marcy created the website Testing Accessibility to encourage designers and developers to test their own work. She has also grown her impact by working on numerous accessibility testing tools, website frameworks, and by leading communities. In her free time, Marcy enjoys riding bikes with her family, lifting weights, hiking and van exploring, eating spicy food, and cooking.
Rich Harris
Rich Harris is the creator of several widely-used open source web development tools including Rollup, the JavaScript module bundler, and Svelte, a UI framework that obsesses over performance and accessibility.
Before joining Vercel, where he works full-time on Svelte, Rich was an award-winning visual journalist at the Guardian and the New York Times.
Tim Kadlec
Tim Kadlec is a performance consultant and trainer focused on building a web everyone can use. He is the author of High Performance Images (O’Reilly, 2016) and Implementing Responsive Design: Building sites for an anywhere, everywhere web (New Riders, 2012), and was a contributing author for Smashing Book #4: New Perspectives on Web Design (Smashing Magazine, 2013), and the Web Performance Daybook Volume 2 (O’Reilly, 2012). He writes about all things web at timkadlec.com. You can find him sharing his thoughts in a briefer format on Twitter at @tkadlec.
Phil Hawksworth: MC
With a passion for browser technologies, and the empowering properties of the web, he loves seeking out ingenuity and simplicity, especially in places where over-engineering is common.
After almost 25 years of building web applications for companies such as Google, Apple, Nike, R/GA, and The London Stock Exchange, Phil has worked to challenge traditional technical architectures in favour of simplicity and effectiveness.
Phil is co-author of “Modern Web Development on the Jamstack” (O’Reilly, 2019). He post thoughts at @philhawksworth@indieweb.social and blogs at hawksworx.com/
Ines Akrap
Ines Akrap is a Frontend Software Engineer passionate about optimizing websites to be fast, sustainable, and provide the best user experience for every user. She works in Storyblok as Solutions Engineer.
She is a Web Performance Google Developer Expert and Green Software Champion. She co-chairs W3C Sustainable Web Interest Group that is actively working on new version of Web Sustainability Guidelines (WSG). She enjoys sharing her knowledge with others through talks, podcasts, workshops, and courses.
When not knee-deep in performance budgets, estimating the CO2 emissions of JS files, or explaining what is “headless”, Ines is busy navigating life as a mother of two—balancing toddler negotiations with newborn care, and embracing the chaos and joy of raising small humans. All she wants for Christmas is one good night’s sleep.