
Thursday, July 23rd
6:00PM to 9:00PM BST
In-Person
Address available to attendees

Ready to join in on the fun?

🚀 Join us on Thursday, 23rd July for our JS Monthly Meetup!
We’re meeting in person at the Zoopla office - come along for a great evening of tech talks, networking, and community.
📍 Location
Zoopla Office, The Cooperage, 5 Copper Row, London SE1 2LH
To access Zoopla, please enter via the inner courtyard.
You can reach the courtyard in two ways:
Via the corner of Shad Thames and Horselydown Lane
Or via Copper Row
🙏 A big thank you to Zoopla for hosting us, and to 1771 Technologies for sponsoring food and drinks 🍕🥤❤️
🕕 Rough timings
6:00 - 6:30 PM: Doors open & refreshments 🍕🥤
6:30 - 6:40 PM: Welcome & introduction
6:40 - 6:55 PM: A better way to build data grids - Lee Beydoun
6:55 - 7:25 PM: Building Confidence at the Boundaries: An Outside-In Testing Strategy - Eduardo Aparicio Cardenes
7:25 - 7:40 PM: Break ☕
7:40 - 8:20 PM: Productionising a JavaScript runtime with AI - Johannes Stein
8:20 - 8:30 PM: Closing
8:45 PM: We’ll start heading to the pub 🍻
9:00 PM: Venue close
See you there! 👋
Presentations
Lee Beydoun
1771 Technologies is building LyteNyte Grid, a lightning-fast React data grid for complex, high-volume applications.
Lee will give a high-level overview of how LyteNyte Grid achieved best-in-class performance, with a small look at the technical details behind it.
Eduardo AC
Modern JavaScript applications rarely fail because of a broken function. They fail at the boundaries: APIs, authentication, feature flags, browser APIs, payments and third-party services.
From a real journey at scale with over 1.3 million transactions, Eduardo will explore an outside-in testing strategy that focuses on what matters most: the interactions between your application and the outside world.
You’ll leave with practical techniques to build confidence, reduce brittle tests and ship changes with greater certainty, regardless of your JavaScript framework.
Johannes Stein
What does it take to turn a from-scratch JavaScript engine into production software?
Johannes will go into detail on spec conformance, CI and benchmarking infrastructure, and how to catch regressions before they happen. There will also be live demos of what you can build when you can shape the entire runtime, plus a closer look at the corners of JavaScript most of us never have to think about.
Johannes has spent his professional career working on JavaScript across web, mobile and backend solutions. With agentic engineering, he has been looking for more complex and sophisticated projects to use AI with.
Platform Sponsors

Torc is a community-first platform bringing together remote-first software engineer and developer opportunities from across the globe. Join a network that’s all about connection, collaboration, and finding your next big move — together.
Join our community today!

Don't let broken lines of code, busted API calls, and crashes ruin your app. Join the 4M developers and 90K organizations who consider Sentry “not bad” when it comes to application monitoring. Use code “guild” for 3 free months of the team plan.
https://sentry.io


Ready to join in on the fun?

Platform Sponsors

Torc is a community-first platform bringing together remote-first software engineer and developer opportunities from across the globe. Join a network that’s all about connection, collaboration, and finding your next big move — together.
Join our community today!

Don't let broken lines of code, busted API calls, and crashes ruin your app. Join the 4M developers and 90K organizations who consider Sentry “not bad” when it comes to application monitoring. Use code “guild” for 3 free months of the team plan.
https://sentry.io
Jul
23
Thursday, July 23rd
6:00PM to 9:00PM BST
In-Person
Address available to attendees
🚀 Join us on Thursday, 23rd July for our JS Monthly Meetup!
We’re meeting in person at the Zoopla office - come along for a great evening of tech talks, networking, and community.
📍 Location
Zoopla Office, The Cooperage, 5 Copper Row, London SE1 2LH
To access Zoopla, please enter via the inner courtyard.
You can reach the courtyard in two ways:
Via the corner of Shad Thames and Horselydown Lane
Or via Copper Row
🙏 A big thank you to Zoopla for hosting us, and to 1771 Technologies for sponsoring food and drinks 🍕🥤❤️
🕕 Rough timings
6:00 - 6:30 PM: Doors open & refreshments 🍕🥤
6:30 - 6:40 PM: Welcome & introduction
6:40 - 6:55 PM: A better way to build data grids - Lee Beydoun
6:55 - 7:25 PM: Building Confidence at the Boundaries: An Outside-In Testing Strategy - Eduardo Aparicio Cardenes
7:25 - 7:40 PM: Break ☕
7:40 - 8:20 PM: Productionising a JavaScript runtime with AI - Johannes Stein
8:20 - 8:30 PM: Closing
8:45 PM: We’ll start heading to the pub 🍻
9:00 PM: Venue close
See you there! 👋
Presentations
Lee Beydoun
1771 Technologies is building LyteNyte Grid, a lightning-fast React data grid for complex, high-volume applications.
Lee will give a high-level overview of how LyteNyte Grid achieved best-in-class performance, with a small look at the technical details behind it.
Eduardo AC
Modern JavaScript applications rarely fail because of a broken function. They fail at the boundaries: APIs, authentication, feature flags, browser APIs, payments and third-party services.
From a real journey at scale with over 1.3 million transactions, Eduardo will explore an outside-in testing strategy that focuses on what matters most: the interactions between your application and the outside world.
You’ll leave with practical techniques to build confidence, reduce brittle tests and ship changes with greater certainty, regardless of your JavaScript framework.
Johannes Stein
What does it take to turn a from-scratch JavaScript engine into production software?
Johannes will go into detail on spec conformance, CI and benchmarking infrastructure, and how to catch regressions before they happen. There will also be live demos of what you can build when you can shape the entire runtime, plus a closer look at the corners of JavaScript most of us never have to think about.
Johannes has spent his professional career working on JavaScript across web, mobile and backend solutions. With agentic engineering, he has been looking for more complex and sophisticated projects to use AI with.
Get in touch!
hi@guild.host