the web performance conference 14-15 November 2024, Amsterdam 2019

On 21st and 22nd of November 2019 the second conference took place in Amsterdam, a single track conference with fourteen world-class speakers covering today’s most important web performance insights.

On this page, you'll find links to all videos and available slides. If you want to get an idea of our event, watch our compilation video, see our photos or read some testimonials.

Subscribe for conference announcements or follow @PerfNowConf

Time Thursday, November 21st Friday, November 22nd
08:30Doors open, breakfast, coffee, tea & registration
Welcome words by Tammy & Tim
09:30Henri Helvetica A Decade of Disciplined DeliveryHarry Roberts From Milliseconds to Millions
10:50Tammy Everts Performance CulturePat Meenan HTTP/2 priorities
11:40Patrick Hamann WebAssemblyDivya Sasidharan Predictive Prefetching
13:30Tatiana Mac How Privilege Defines PerformanceTim Kadlec When JavaScript Bytes
14:20Stuart McMillan Schuh case studySimon Hearne Third-party Performance
15:50Emily Nakashima Observability and User HappinessAnnie Sullivan Performance Monitoring
16:40Ilya Grigorik performance.​now().​reject(reasons)Vitaly Friedman The Future of Performance
18:00Party, drinks, food & mingling Sponsored by SpeedCurveParty, conversations, food & drinks Sponsored by Facebook

Henri Helvetica

Freelance Developer, @HenriHelvetica

Henri is a freelance developer who has turned his interests to a passionate mix of site performance engineering and pinches of user experience. When not reading the deluge of daily research docs and case studies, or indiscriminately auditing sites in devtools, Henri can be found contributing back to the community: Toronto Web Performance Group meetup + SPOTLIGHT: PERFORMANCE conference co-organizer, curating performance content for conferences or volunteering his time for lunch and learns at various bootcamps. Additionally, you can find him speaking at conferences, and touching base with the community—all with a radiant smile. Otherwise, he’s focusing on running the fastest 5k possible (surprise surprise).

A Decade of Disciplined Delivery

In 2019, we live in an age of immediacy. We make demands for speedier processes, or at the very least - less wait times. All industries and services have scrutinized operations in ways to make things as expeditious as possible.

When writing the influential tool FireBug, Firefox’s Joe Hewitt mentioned measuring load times as an objective. The same year, some equally influential writing was released: “High Performance Web Sites”, a book by SpeedCurve’s Steve Souders. Mr Souders had introduced 14 rules for front end engineers to live by, or how he openly opined: 14 rules to faster loading web sites.

Just over a decade later, the very websites we scrutinized for speed have matured, but so has the idea of speed itself. What was once a simple stopwatch measurement has turned to a metric in part proof and perception. But what of the 14 rules? “A Decade Of Disciplined Delivery” is a curious retrospective look at how the 14 rules apply today in 2019 in our quest to deliver and load resources as quickly as possible.

Video, slides

Tammy Everts, MC

Chief Experience Officer, SpeedCurve, @tameverts

Tammy is chief experience officer at SpeedCurve, where she helps companies understand how visitors use their websites, and a cochair of O’Reilly Fluent. 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.

The 7 Habits of Highly Effective Performance Teams

Over the past year, Tammy has talked with companies of all types – retail, media, travel, software, and more – and all sizes – from SMBs to huge enterprises. She was inspired to see how different organizations approach creating a robust performance culture.

The one thing they all have in common is agreeing that performance culture is the single greatest success variable. Having a strong culture of performance can help:

  • Prevent regression
  • Reduce gatekeeping
  • Increase investment from the business

Tammy will share tips and best practices gleaned from scores of conversations with people and companies who are leading the way down the path to performance.

Video, slides

Patrick Hamann

Principal Software Engineer, Fastly, @patrickhamann

Patrick is a Principal Software Engineer at Fastly where—among other things—he is helping to build a faster web for all. Prior to Fastly, he helped architect some of the world’s largest media websites including The Guardian and the Financial Times. When not speaking or ranting about performance, he enjoys spending his spare time with his family discovering new places and food.

WebAssembly – To the browser and beyond!

WebAssembly (or Wasm) is a compilation target for the open web; often considered a hard-to-approach performance optimisation for your browser applications - but it promises to be so much more than that!

It’s beginning to reshape how, and where, our applications can run, giving us the freedom to choose whichever language is best suited for the job, and the most appropriate location to run it, be that the client, edge or server.

In this talk we’ll debunk some myths about WebAssembly and explore what it is and what it isn’t, its challenges, look at how we can use it practically in applications today, and what the future holds, both in the browser and beyond!

Video, slides

Tatiana Mac

Independent Designer, @TatianaTMac

Tatiana is an independent American designer who works directly with organisations to build clear and coherent products and design systems. She believes the trifecta of performance, accessibility, and inclusion can work symbiotically to improve our social landscape digitally and physically. When ethically-minded, she thinks technologists can dismantle exclusionary systems in favor of community-focused, inclusive ones. Never totally pleased with design tools, she designs in browser to visual narratives into the web in a semantic and component-orientated way. Her current obsessions are optimising variable fonts, converting raster images into to SVGs, and recreating modernist paintings in CSS grid. When she can successfully escape vim, she finds new countries to explore (33 and counting).

How Privilege Defines Performance

In theory, web performance, accessibility, and inclusive design all have similar goals: Provide the best, most consistent experience to all people using the minimal amount of resources.

In practice, this often falls apart.

Product creators define what it means to be performant from where they stand, which is typically from places of privilege with unseen biases, struggling to find true empathy with their users.

Through this talk, we’ll examine how to build conscientiously, looking within to resist systematic problems in order to create more truly performant, accessible, and inclusive systems for our users.

Video, slides

Stuart McMillan

Head of Multichannel, Tiso, @mcmillanstu

Stuart first started in ecommerce 17 years ago, selling tents and other outdoor equipment, before properly getting his geek on and moving in to a senior development role. Moving back in to a more general role, he worked for Schuh for seven years; his job description included responsibility for site performance, analytics and the quality of the conversion across all devices and being the champion for the multichannel, connected customer. He’s big advocate of web standards and appreciates a job well done. He brings a detailed technical appreciation to ecommerce, combined with a truly awful sense of humour.

He recently moved on from Schuh and is now Head of Multichannel for the outdoor retailer, Tiso, part of the JD Sports family. This is a real return to his retailing routes, again selling outdoor equipment. A broader role than in Schuh, his responsibilities are everything from Digital Marketing through User Experience to fulfillment.

7 Years of Never Shutting Up About Site Speed (Schuh case study)

Stuart will be presenting a case study of his seven years at Schuh, where they moved from having a “site speed problem” to “fastest in the UK”. What’s extraordinary about Schuh’s performance journey is how ordinary it is. They had (and in some cases continue to have) many of the same issues in common with most websites, and there is nothing revolutionary about the solutions. In many ways, this is a case study of hard work and persistence. But along the way there have been a few interesting problems to solve, from challenges with third parties, to challenges with third parties!

Stuart will cover a bit of theory and plenty of application, from measurement through to implementation, from processes to people.

[Video and slides taken down, sorry]

Emily Nakashima

Engineering Manager, Honeycomb, @eanakashima

Emily manages the engineering & design teams at In the past, she’s worked on javascript, web perf optimization and client-side monitoring & telemetry at other developer tools companies like Bugsnag & GitHub. In her free time, she organizes an unconference called AndConf, makes many checklists, and likes to talk about disaster preparedness.

Observability is for User Happiness

Within the observability community, there’s a saying, “nines don’t matter if users aren’t happy,” meaning that 99.999% server uptime is a pointless goal if our customers aren’t having a fast, smooth, productive experience. But how do we know if users are happy? As members of the web performance community, we’ve been thinking about the best ways to answer that question for years. Now the observability community is asking the same questions, but coming at them from the opposite side of the stack. What can we learn from each other? Emily will talk about how approaching web performance through the lens of observability has changed the way her team thinks about performance instrumentation and optimization. She’ll cover the nuts & bolts of how Honeycomb instrumented its customer-facing web app, and she’ll show how the Honeycomb team is using this data to find and fix some of its trickiest performance issues, optimize customer productivity, and drive the design of new features.

Video, slides

Ilya Grigorik

Web Performance Engineer, Google, @igrigorik

Ilya is a web performance engineer at Google, co-chair of the W3C Web Performance Working group, and author of High Performance Browser Networking (O’Reilly) book.

Are we there yet? We’ve been at this make-performance-happen-now game for over a decade but the progress is slow: adoption of basic best practices (e.g. optimizing images, optimizing critical path, etc) is a struggle; inconsistent adoption of HTTP/2 priorities signals industry hurdles we didn’t account for; we’re back at the drawing board on key performance primitives (e.g. prefetch and prerender) that were supposed to save the day. Why, what are the reasons, and what can we do to improve our odds as we head into the new decade? Let’s talk.

Video, slides

Harry Roberts

Consultant Performance Engineer, @csswizardry

With a client list including Google, Unilever, and the United Nations, Harry is an award-winning Consultant Front-end Architect who helps organisations and teams across the globe to plan, build, and maintain product-scale UIs.

A Google Developer Expert, and Performance Ambassador for SHIFT Commerce, he writes on the subjects of CSS architecture, performance, and scalability at, develops and maintains inuitcss, authored CSS Guidelines, and Tweets at @csswizardry.

Harry will also host a workshop on Front-End Performance.

From Milliseconds to Millions: A Look at the Numbers Driving Web Performance

We all know performance is big business, but how big? Let’s take a look at some of the numbers powering the web performance industry from both sides of the table. What do performance improvements mean for my clients, and how do we translate that into a working relationship?

Video, slides

Patrick Meenan

Web Performance Engineer, Facebook, @patmeenan

Patrick has been working on web performance in one form or another for the last 20 years and is currently working on web performance at Facebook. Prior to that he worked at Cloudflare and Google to make Chrome and the web faster. Patrick created the popular open source WebPageTest web performance measurement tool and runs the free instance of it at

HTTP/2 priorities

Patrick will dive into the details of HTTP/2 prioritization, how it interacts with the browser and your content and how to get the most out of it. He will also explore the various ways it can go wrong in a production environment and how to validate your deployment to make sure it is working optimally. He will also explore recent developments with HTTP/3 and the changes that will bring to the table.

Video, slides

Divya Sasidharan

Developer Experience Engineer, Netlify, @shortdiv

Divya is a web developer who is passionate about open source and the web. She is currently a developer experience engineer at Netlify, and believes that there is a better workflow for building and deploying sites that doesn’t require a server—ask her about the JAMstack. You will most likely find her in the sunniest spot in the room with a cup of tea in hand.

Predictive Prefetching

Some of the most cutting edge and effective web performance optimizations, like prefetch and preconnect, involve being proactive. We make predictions to determine where a user is likely to go next and load resources ahead of time so page load is as fast as possible. This is where machine learning comes in handy. By training a machine learning model (maybe a markov chain?) with current analytics data, we can take the guess work our of our predictions and more accurately load resources ahead of time. In this talk, we will examine techniques currently being developed, like GuessJS to make predictive prefetching a reality.

Video, slides

Tim Kadlec, MC

Performance Consultant, @tkadlec

Tim 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 You can find him sharing his thoughts in a briefer format on Twitter at @tkadlec.

When JavaScript Bytes

JavaScript is, byte-for-byte, the most expensive resource on the web and we’re using more of it than ever in our sites. You can optimize the delivery, the parsing and the execution until you’re blue in the face but you’ll never make it as performant as simply not using it in the first place.

But what do you do if you’re already staring down a pile of scripts?

In this talk, we’ll discuss practical ways to reduce the amount of JavaScript we’re sending down to the people using our sites. We’ll look at techniques for shaving excess bytes off our bundles and, just as critically, tools and approaches we can use to make sure those bytes stay off.

Video, slides

Simon Hearne

Web Performance Solutions Engineer, Akamai, @simonhearne

Simon is passionate about web performance. He has been working in the industry since 2012 in roles as diverse as professional services, software engineering and solutions engineering. His current role is to help his clients achieve excellent user experiences through monitoring, testing and managing web performance.

Deep dive into third-party performance

In this talk we will get deep into HTTP Archive, browser developer tools and Real User Monitoring (RUM) data. We’ll discover which third-party tags have the greatest impact on user experience, how ad blockers impact site speed and what to look out for when evaluating a new third-party service. Most importantly, we will discuss techniques to manage third-party performance & security without creating friction with marketing and analytics teams!

Video, slides

Annie Sullivan

Software Engineer, Google, @anniesullie

Annie is a software engineer with Google. She is passionate about building a better performing web for users across the globe. Her tenure as a Googler spans 14 years, with experience on the toolbar, docs, web search, and chrome teams. Annie most recently comes from a tour-of-duty with the United States Digital Service, a tech startup at the White House, where she contributed to projects at the Department of Energy. She lives in Michigan with her husband Doug and two sons. See her laser engraved art at

Lessons learned from performance monitoring in Chrome

Annie has done a lot of work on performance metrics and monitoring for Chrome over the past several years. She’ll talk about what she’s learned in that time, and how it can be applied to web site performance monitoring. She will cover performance metric and benchmark design, dealing with benchmark noise in the lab, and understanding the subtleties of RUM data.

Video, slides

Vitaly Friedman

Creative lead, Smashing Magazine, @smashingmag

Vitaly loves beautiful content and does not give up easily. From Minsk in Belarus, he studied computer science and mathematics in Germany, discovered the passage a passion for typography, writing and design. After working as a freelance designer and developer for 6 years, he co-founded Smashing Magazine, a leading online magazine dedicated to design and web development. Vitaly is the author, co-author and editor of all Smashing books. He currently works as editor-in-chief of Smashing Magazine in the lovely city of Vilnius, Lithuania.

The Future of Performance

We’ve come quite far in web performance over the last decade, haven’t we? The connections are better than ever, the browsers smarter than ever, HTTP/2 is omnipresent and 5G is right here at the horizon! In fact, we’ve invented and mastered fancy code-splitting and tree-shaking techniques, reinvented bundling of assets in the world of HTTP/2 and learned how to minimize the payload to deploy fast and render soon. Are we done yet?

Not really. In this session, we’ll look into areas that still need some work to be done. What about next-generation image formats and video encoders? What about wide-established progressive rehydration and lazy-loaded frameworks? What about progressive deployment with JAM Stack and universal Brotli compression by default? We’ll also touch on priority hints, cutting-edge strategies for service workers, subsetting typographic spaces with variable fonts, performance optimization with Network Information API and Device Memory API, runtime optimizations with WebAssembly and analytics-based, predictive performance optimization. Also, we’ll explore the privacy/authentication aspects of performance and how new development will change the way we build and deploy on the web. The future isn’t here yet, let’s examine what it might bring to all of us!

Video, slides

In 2019, 339 people from 180 companies and 34 countries joined us.

Name Company Twitter From
Aaron Peters @aaronpeters NL
Abid Ahmed Qatar Foundation QA
Adam Dille Quantum Metric @adamdille US
Adam Lynch Teamwork @lynchy010 IE
Adrian Holovaty Soundslice @adrianholovaty NL
Adrian Willis Akamai @adrian_willis16 US
Aleck Landgraf Airbnb US
Alexander Almstrom Panagora Room SE
Alexis Anzieu CA
Alfredo Lopez Hearst @lfredolo US
Alice Rose A Color Bright @heldinz DE
Alla Gringaus Rigor @agringaus US
Ana Filote SendCloud NL
Anders Krog-Meyer Siteimprove DK
Anders Olav Candasamy Capra @AndersCan NO
Anders Pedersen Shift @apdrsn DK
Andrea Cigana audibene DE
Andreas Cederström Tretton37 Development @andriijas SE
Andreas Dirr diva-e Advertising DE
Andreas Schneebauer Swarovski AT
Andrej Runov IG Group UK
Andres Lucero Design by Committee US
Andrew Betts Fastly @triblondon UK
Andrew Galloni Cloudflare UK
Andrey Posudevsky We are you Den Bosch @APosudevsky NL
Andriy Horen services AT
Andy Davies Asteno @AndyDavies UK
Ankita Vimal Facebook UK
Anna Baas Infi @venite NL
Annie Sullivan Google @anniesullie US
Anthony Hogg Akamai DE
Anton Behaeghe The Reference BE
Anton Nemtsev Werkspot @cadaverGordo NL
Arash Paknezad NL
Ariane Jansen Facebook UK
Arie van donkelaar MeasureWorks NL
Armel Pingault Netcentric Ibérica @armelpingault ES
Arthur Trauter SAP DE
Arturs Valenieks Evolution Latvia LV
Assaf Ganor IL
Aukje Holtrop NL
Aymen Abdeljaoued Akamai DE
Barry Pollard @tunetheweb IE
Bas Schouten Mozilla NL
Bas van der toorn MeasureWorks NL
Behrooz Nobakht Atlassian AU
Ben Dalby eCG @bndlb NL
Bertrand Germain Prisma media FR
Bobby Bol De Voorhoede NL
Brian Ramirez REWE Digital @screenspan DE
Brian Weeteling Geta Netherlands @BrianWeet NL
Catalin Stefan Tatu Creuna Danmark DK
Chanakarn Niyornram NL
Chris Schäfer Schwarz IT DE
Christian Althaus SAP DE
Christian Bromann Sauce Labs @bromann DE
Christian Schaefer Working Draft Podcast @derSchepp DE
Christoffer Alvenstrand Panagora Room @calvenstrand SE
Christoph Niedermoser AT
Cliff Crocker SpeedCurve @cliffcrocker US
Conrad Koenitz Gelbe Seiten Marketing DE
Dale Lenard Akamai @dalelenard AU
Daniel Kreitschmann ZEIT ONLINE DE
Daniel Terwiel SendCloud NL
Daniela Matos de Carvalho YLD @sericaia UK
Dario Barrio Castan Wedding Planner @darybarrio ES
Darius Rosendahl De Nieuwe Zaak @DoorDarius NL
Darren Hall Developer Extraordinaire @frontendbeast UK
Dave Schoots KPN NL
David Carrus Gucci @CarrusDavid IT
Declan Rek De Voorhoede @declanrek NL
Dennis Burger Poort80 NL
Dennis Spierenburg Matise NL
Dennis Westermann valocity @dennwest DE
Deon Roos Cloudflare UK
Dhananjay Kumar Goibibo @dj_broke IN
Dick Verweij AFAS Software NL
Divya Sasidharan Netlify @shortdiv US
Dmitry Samokhvalov Atlassian AU
Drew Post Elastic @drewpost UK
Dzmitry Shymkin Backbase NL
Eivind Furuberg NO
Elmo Saukko Veikkaus FI
Emily Nakashima Honeycomb @eanakashima US
Emma Ysebaert Atlassian AU
Emmanuel Plouvier Prisma media FR
Emmet Campion Teamwork IE
Erick Wilder SendCloud NL
Erik Muijs Poort80 NL
Erik Witt Baqend DE
Erwin Hofman Blue 2 Blond @blue2blond NL
Esben Anker-Møller Shift @esbenanker DK
Estelle Weyl Mozilla @estellevw US
Evangelos Arvanitakis @AggArvanitakis GR
Eyup Alikilic Artefact Germany DE
Fabian Krumbholz Netcentric Deutschland @fabkru DE
Flora Harvey uSwitch UK
Gareth Hughes Cloudinary @brassic_lint UK
Gary Evesson Atlassian @gevsn AU
Gauthier Geneau Boursorama FR
Georgiy Mostolovytsya Yandex RU
Gerald van den Hengel Divotion @G_Hengel NL
Guy Alon Align Technologies IL
Hamed Jahromi University College Dublin IE
Hannes Gruber Swarovski AT
Hans Linssen MeasureWorks NL
Harry Roberts Consultant Performance Engineer @csswizardry UK
Hassan Syed Yilu Travel Services @bingatweet DE
Heiko Tjepkema KLM NL
Helge Neven hagebau connect Service DE
Helge Silset Capra NO
Henri Helvetica Freelance Developer @HenriHelvetica CA
Hila Havia Align Technologies IL
Holger Stein Staffbase DE
Igor Barkowski GetResponse PL
Ilya Grigorik Google @igrigorik US
Ilya Znamensky SEMrush CZ
Ines Akrap Netcentric Deutschland @InesAkrap DE
Ioannis Angelogiannis Yilu Travel Services DE
Irmantas Zenkus UAB HomeToGo Technologies LT
Iulia Iacoban Experian @IacobanIulia UK
Iurii Volkov Yandex RU
Ivan Akulov @iamakulov BY
Jake Lane Atlassian AU
Jakub Ziolkowski PL
James English IG Index UK
James Glover iTech Media UK
Jamie Cross Win Technologies UK
Jan Thiel Techniker Krankenkasse DE
Janine Lanting AFAS Software NL
Jannick Weichert DE
Jasmina Vanvooren Cloudflare UK
Jason Merriman Insider @jdmerriman US
Jasper Moelker De Voorhoede @jbmoelker NL
Jeffrey Knox FreeAgent @jeff_r_knox UK
Jens Fosgerau Trendhim DK
Jeremy Colin Zalando @jee_colin DE
Jeroen Heijmans Infi @jeroenheijmans NL
Jeroen Malestein @jroenmalestein NL
Jeroen Tjepkema MeasureWorks @jeroentjepkema NL
Jessica Leach @jessicaleach6 UK
Joe Cook 8 West Consulting IE
Joel Köbner eggsunimedia DE
Johan Terpstra Yawiss NL
Johan Voeten We are you Den Bosch @johanvoeten NL
Jon Arne Sæterås ImageEngine by ScientiaMobile @jonarnes NO
Jon Dean Akamai DE
Jonas Barle Akamai SE
Jonathan Edwards ASDA @Jon0_js UK
Jonathan Fleckenstein WebstaurantStore @jonfleck US
Jonny Frodsham Havas Lynx UK
Joost Faber CMD Amsterdam @joost_faber NL
Joris Hartsuiker Van der Let & Partners @jrs2k3 NL
Jurriaan Topper A Color Bright @iksi DE
Karol Jakubcewicz AirHelp PL
Kasper Brandt Trendhim DK
Kasper Rasmussen Shift @kasper_br DK
Kathleen Auerbach Ströer Media DE
Kenny Korte InShared NL
Kevin Farrugia Incredible Web @kevin_farrugia MT
Kevin Korpics Quantum Metric @sciprok US
Kevin Sison Facebook @kevinsison US
Khizar Aziz Yilu Travel Services @Khizar____ DE
Kim Johannesen Shift @therealkimblim DK
Koen Leemans OrangeValley NL
Krijn Hoetmer Qontent @krijnhoetmer NL
Ksenia Iakovleva NL
Larissa Nerous hagebau connect Service DE
Laura Moss Havas Lynx UK
Laura Runneboom InShared @laurarun3 NL
Lavinia Anghel Akamai DE
Lewis Quaife iTech Media @lewis_quaife UK
Linas Jasinauskas UAB HomeToGo Technologies LT
Liubov Kononenko KPN NL
Lorenz Kahl Techniker Krankenkasse DE
Luc de Laat We are you Den Bosch NL
Luca Passani ImageEngine by ScientiaMobile @Scientia_CTO US
Luke Watts Snyk UK
Lyubomir Angelov Isobar Commerce @EiPileta BG
Maarten van der Haar De Nieuwe Zaak NL
Madeleine Ruhe RTL interactive DE
Maikel Sleebos NL
Maja Matic InnoGames @mayainle DE
Maksim Ryzhikov RU
Marc Goertz SilverTours DE
Marc Stalfoort VodafoneZiggo @mstalfoort NL
Marcel Rittershaus DE
Marco Montalbano Gucci IT
Marius Bråthen @Mvbraathen NO
Mark de Bruijn Infi NL
Marta Fernandes YLD @marta_frn UK
Martijn Bos AFAS Software NL
Martijn Schuijers Frontmen NL
Martijn van Duuren @Martijnvduuren NL
Martin Knospe audibene DE
Mathias Hansted Shift @mathiasha DK
Matt Lunn Tesco UK
Matt Ponsford Atlassian AU
Matt Zeunert DebugBear @mattzeunert UK
Matthias Bergmann Gelbe Seiten Marketing DE
Max Dombrowski Ströer Media DE
Maxim Yezersky UA
Maximilian Klaß Techniker Krankenkasse DE
Mayar Mahmoud Amazon Web Services DE
Menno de Vries NL
Michael Gooding @Michael_G_81 UK
Michael Grünewald Amazon Web Services DE
Michael Hastrich 72/300 @mchaste NL
Michael Royster WebstaurantStore US
Michal Matuška SuperKoders @fireball_ CZ
Michał Zalecki @MichalZalecki PL
Mikael Adolfsson Panagora Room SE
Moussa Adoum Moustapha Kouley Support Service @KouleyMoussa TD
Márton Maleczki Avon EMEA @maleczkimarton HU
Natalie Mikešová Oracle CZ
Natalie Puls DE
Nick Gavalas Facebook US
Nicolai Svendsen Siteimprove DK
Nicolas Delfino Tretton37 Development SE
Niels van Midden NL
Niklas Ståhle SEB @n_stahle SE
Nikola Kuzmanov Isobar Commerce @kuzmanov_nikola BG
Nirujan Rajadurai Schwarz IT DE
Nynne Just Christoffersen Siteimprove @nynnest DK
Odd Gunnar Fatland 2Park Technologies NO
Olga Pigareva SilverTours DE
Oliver Hunt Akamai UK
Omar Portillo @omrprt UK
Omri Bardichev Payoneer IL
Pat Meenan Facebook @patmeenan US
Patrick Hamann Fastly @patrickhamann UK
Patrick Kroeze TRIMM @patrickkroeze NL
Patrick van Kleef Geta Netherlands @patkleef NL
Patrycjusz Szydło Grupa Pracuj PL
Paul Calvano Akamai @paulcalvano US
Paul Whitehead Sky Betting & Gaming @Response_Times UK
Paulin Nguekam Gelbe Seiten Marketing DE
Pavel Gavlík CEAi Prague CZ
Pedro Correia Blip PT
Per Ökvist Tretton37 Development SE
Peter van Gils Lighthouse FR
Peter van Marwijk Maxlead NL
Peter-Paul Koch @ppk NL
Petra Schanz Gelbe Seiten Marketing DE
Philip Vandenberg Eggplant UK
Philipp Kastner Dynatrace AT
Philipp Mitterer eMundo AT
Philipp Rudloff SendCloud NL
Philipp Storl Staffbase @replaymag_de DE
Pierre Dedy SilverTours DE
Piotr Grzywa DAZN PL
Praveen Vignesh Ponnuchamy Kennadi Zoho Corporation @praveenvignesh IN
Priyanka Kore @piyukore06 DE
Rafal Sokalski Sauce Labs PL
Ray Bogman Adobe @raybogman NL
Rene Meijboom PerformanceArchitecten NL
Rhian van Esch SendCloud NL
Richard Weltman Havas Lynx UK
Rick Viscomi Google @rick_viscomi US
Robert Weber closingtag @closingtag DE
Roberto Poggini Gucci IT
Robin Nieuwboer NL
Robin van Loon World Wildlife Fund @RobinvanLoon NL
Rockey Nebhwani LeapGradient @rnebhwani UK
Rodolfo Gonçalves Blip @orenciorodolfo PT
Rodrigo Juarez Secret Escapes DE
Rohan Shah US
Roman Andriyanov UA
Ronnie Ganot Align Technologies IL
Roxin Cernica services AT
Rune Kulstad Capra NO
Ryan Townsend SHIFT Commerce @ryantownsend UK
Sabine Karzel eggsunimedia DE
Sammy Bernard NL
Sander Bogaard Poort80 NL
Sander Heilbron OrangeValley @sanderheilbron NL
Sander van Surksum InDevelop @sandersu1981 NL
Sander Vink Infi NL
Sarah Märdian Märdian @smaerdian DE
Sascha Karnatz Facelift bbt @_web_ DE
Satoshi Kikuchi Web Directions East @mantangs JP
Sava Sertov Isobar Commerce @sertovs BG
Shay Cojocaru Align Technologies IL
Sietske van Vugt @bumblebeedc NL
Simon Hearne Akamai @simonhearne UK
Skjalg Teig Capra NO
Stefan Böck Portalix @stefanboeckname DE
Stefan Steurenthaler Ströer Digital Publishing @stefan_steu DE
Stephan Mousset ING NL
Stephen Bush Plaid @wyattdanger US
Steve Bosworth Shopify @steve_bosworth CA
Steve Kamerman ImageEngine by ScientiaMobile @kamermans US
Stoyan Stefanov Facebook @stoyanstefanov US
Stuart McMillan Tiso @mcmillanstu UK
Stéphane Martin Lighthouse FR
Su Ann Ling NO
Sven Lückenbach CBC Cologne Broadcasting Center DE
Sven Wolfermann maddesigns @maddesigns DE
Takeshi Amano Ikedayama Shokai @moksahero JP
Tamilarasan Selvaraj Zoho Corporation @stamilarasan IN
Tammy Everts SpeedCurve @tameverts CA
Tamás Bíró Emarsys-Technologies HU
Tatiana Mac Independent Designer @TatianaTMac US
Tatjana Hinfner eggsunimedia DE
Thijs Reijgersberg Werkspot @ysbreker NL
Thomas Chan Akamai DE
Thomas Dann Deloitte UK
Thomas Dobber Adyen NL
Thomas Kelly Shopify @thommaskelly CA
Tim Kadlec Performance Consultant @tkadlec US
Tim Vereecke Akamai @TimVereecke BE
Timothy Vernon Werkspot @tvernon_tech NL
Tobias Flüter DFL Digital Sports DE
Tom Hutman Adyen NL
Tom Williams Autodesk US
Tomas Ruzicka ProductBoard @LeZuse US
Tomer Raivit Payoneer IL
Trushen Patel Deloitte UK
Tsvetan Stoychev EXTENDIX ONLINE @ceckoslab DE
Ursula Clarke Evocco @tangentfairy IE
Uwe Trenkner trenkner consulting @utrenkner BE
Vicky Chin Mozilla CA
Viktor Petersson Siteimprove DK
Ville Orkas Valuemotive FI
Vinicius Andrade Werkspot NL
Vitaly Friedman Smashing Magazine @smashingmag DE
Vladimir Katsnelson Wargaming Group CY
Vojta Prikryl ProductBoard @vojta_prikryl US
Volodymyr Shuhaiev @vshuhaiev IL
Vytautas Jakutis @jakutis0 LT
Walter Ebert @walterebert DE
Wesley Soeters Cloudflare @WesleySoeters UK
Wojciech Czerniak Handsontable PL
Wojciech Szymański Handsontable PL
Yoav Weiss Google @yoavweiss FR
Yousuf Shaikh Deloitte @uXuf UK
Yury Tomilin CZ
Zakaria Benbakkar Spartez @zakhttp PL
Øyvind Moldestad Capra NO

Anything missing or wrong? Or don't want to be listed here? Let us know!

The venue

Kloveniersburgwal 50
1012 CX Amsterdam