the web performance conference 14-15 November 2024, Amsterdam

Speakers is a single track conference with fourteen world-class sessions, covering today’s most important web performance insights. Our speakers and topics are selected by our program co-chairs Harry Roberts, Tammy Everts and Tim Kadlec.

Get your tickets

Mandy Michael

Lead Software Engineer, Octopus Deploy,

Mandy is an award-winning Front-End Developer, previously Engineering Manager for major news organisation Seven West Media, and a Staff Software Engineer at Hireup Australia, an online disability support services provider. She speaks at conferences and events locally and internationally sharing her work, experiments, and love of creating for the web. Mandy is an avid supporter of local communities and a strong advocate for women in technology, volunteering at events across Australia. She is the Founder and Organiser of Fenders a local Perth meetup for Front End Developers, previously Director of Mixin Conf, a Google Developer Expert in Web Technologies, a Microsoft Regional Director (MVP Program) and in its inaugural year, in 2018, was named one of the Top 20 Women in Tech in Western Australia.

Jason Grigsby

Cofounder, Cloud Four,

Jason is cofounder of Cloud Four, a small web consultancy with big aspirations. Since cofounding Cloud Four, he has had the good fortune to work on many fantastic projects, including the Obama ’08 iOS app. He was founder and president of Mobile Portland, where he helped start the world’s first community device lab. He is the author of Progressive Web Apps (A Book Apart, 2018), coauthor of Head First Mobile Web (O’Reilly 2011), and one of the signatories of the Future Friendly web manifesto. He participated in the Responsive Images Community Group, which helped define the new web standard for responsive images. You can find him blogging at; on his less frequently-updated personal site,, and on Mastodon.

Erwin Hofman

Web Performance Consultant, RUMvision, @blue2blond

Started developing in 2001, Erwin gained performance knowledge and best practices via trial & error within his own agency and reading many (Google) docs. At the end of the last decade, Erwin started sharing his learnings. Both during public events and privately with merchants & development + SEO agencies via audits & training sessions to help them saving trial & error hours and allowing them to improve decision making with performance in mind. He shares best practices and (case) insights on regular basis via LinkedIn and co-founded a real monitoring solution (RUMvision).

Session topic: INP Case Studies

Karlijn Löwik

CEO, RUMvision

Karlijn is the CEO and co-founder of RUMvision, which offers real-time user monitoring to visualize and compare Core Web Vitals and other user experiences. Her mission is to make everyone understand the importance of site speed and UX, and to explain it in plain English rather than becoming overly technical. With her husband (who happens to be co-speaker Erwin) and 3-year-old daughter, she lives in Groningen, the Netherlands. Additionally, she is a board member of Mage-OS Nederland and advocates for accessibility and women in technology.

Session topic: INP Case Studies

Kara Erickson

Staff Software Engineer, Google, @karaforthewin

Kara is a staff software engineer at Google. She leads Chrome’s Aurora project, which seeks to improve web performance at scale by building performance tooling into open-source frameworks like Next.js, Nuxt, and Angular. Before Chrome, she worked on creating 3D simulations for scripted car scenarios at Waymo. In her free time, she enjoys reading comically large fantasy novels, sketching, and pursuing various wine certifications.

Paul Calvano

Performance Architect, Etsy,

Paul is a Performance Architect at Etsy, where he helps optimize the performance of their marketplace. Prior to that he worked as a web performance consultant at Akamai and Keynote (now Dynatrace), helping websites optimize their performance since as early as 2000. Paul is a co-maintainer of the HTTP Archive, a really cool open source project that has been tracking the evolution of the web since 2010. He’s an author of various chapters of the 2019 Web Almanac and also a co-organizer of the NY Web Performance Meetup group. He writes about web performance and shares HTTP archive research at

Session topic: Performance Mistakes

Anna Migas

Lead UI Developer, Field Intelligence, @szynszyliszys

Anna works as a Lead UI Developer at Field Intelligence helping to bring healthcare to the fastest emerging markets in the world. She is always trying to find ways to make people fall in love with coding and has a long history of organizing coding workshops for WebMuses and Rails Girls. She has been passionate about web performance since she learned about FLIP technique in 2015 and started her speaking career right after. In her spare time she is practicing Pilates, playing Hearthstone and traveling.

Session topic: Thinking Beyond Core Web Vitals

Daniel Roe

Lead Core Team, Nuxt, @danielcroe

Daniel leads the Nuxt core team – previously CTO of a SaaS startup and founder of a creative agency focusing on clarity of vision and message. His open-source work has a focus in the TypeScript and Vue ecosystems and he’s involved in consultancy with companies around the world, particularly around JAMstack, serverless, and software architecture. He’s based in Scotland where he lives with his family and cat.

Session topic: Unpacking Bundling

Get your tickets now

The venue

Zuiderkerkhof 72
1011 WB Amsterdam
Google Maps

The venue is wheelchair-accessible