London
2025
What to Expect
HalfStack events are fun, creative single-track, single-day events focused on the possibilities of the JavaScript and web ecosystem. Hosted in relaxed environments, HalfStack provides authentic, high value experiences for all attendees.
The priority for HalfStack is the attendee experience, with great food, drinks, sessions, swag, and community. Hosted by London’s original JavaScript meetup group, HalfStack has run events in Belgrade, Charlotte, London, Newquay, New York, Phoenix, and Vienna!
HalfStack carefully curates sessions that inspire and inform the audience in a highly interactive and entertaining manner. Each HalfStack event provides an intimate feeling where each attendee has time to meet one another.
Call for Proposals and Fair Pricing
Visit our CfP page for more information on proposing your amazing HalfStack session! Visit our Pricing page to understand what we charge and why.
Our Illustrious Speakers
Each of our events has between 8 and 12 sessions. We update our speaker information regularly. We usually save a few details to give you some surprises on the day of the event, including the order of the sessions.
Rowdy RabouwBeats in the Browser
Javascript is extremely versatile. We use it to build front-end, back-end, desktop, and mobile apps. But did you know you can even create music with it?! Rowdy will show you how easy and fun it is to code your own music with the Web Audio API. As a bonus, he will throw in the Web MIDI API and Web Bluetooth API to really get the party started. Let’s turn up the bass!
Ramona SchweringPlants vs Thieves
Inspired by the game Plants vs. Zombies, Ramona will help us create a secure environment for your web application through test automation.
Nico MartinFrom ML to LLM: on-device AI in the browser
Machine learning models are interpreting the world and generative AI is taking over more and more of our tasks. What if we could use all this magic directly on our devices? With WebAssembly and WebGPU, we have the tools to make all this possible. It's time to get ready for some unexpected examples of how to use AI in the browser!
Carly RichmondIs it (F)ake?! Image Classification with TensorFlow.js
Carly loves baking shows. And there's a particular one that circulates in social media that you need to determine if it's real or a cake. She struggles to pick which one is the cake that leads her to build a model to better find the cakes using JavaScript. In this talk, let's test your cake identification skills against the machine learning model Carly made and use the pre-existing models.
Tiger Oakes and Daphne OakesHow to automate your murder mystery: immersive games in your home
Have you hosted a murder mystery party but dreaded the paper puzzles and constant character confusion? For Halloween, Tiger and Daphne tricked out their party with Node.js by building an electromagnetic chest, IoT-powered dramatic deaths, and a digital character sheet They relied on JavaScript to enhance the immerse role-playing game and elevated their home into an escape room. Come learn how to use your programming skills to become the ultimate party host!
Joe HartTo be revealed
Previously Joe has delighted HalfStack community with voice-based Flappy Bird, head-to-head Tetris, and other hilarious game adventures. We'll soon reveal Joe's session details.
Jo FranchettiTo be revealed
Jo has amazed the HalfStack community with the LED Christmas jumper, LED mask captioning, and a serverless seance. We'll soon reveal Jo's session details.
Leo RivieraThe Cult of Done
Leo will explore the Cult of Done Manifesto and how it relates to software and other creative endeavors.
Ana RodriguesUnlocking Fun Experiments: Exploring the Web Speech API
Voice interfaces surround us daily, helping us with some tasks. But let's forget productivity for a second and experiment with our voice on the Web. We will look at the current state of the Web Speech API, explore its potential in Karaoke, and have some fun!
Rachel NaborsTo be revealed
Rachel Lee Nabors makes their HalfStack debut! More details to be revealed soon
Jonathan FieldingLearning from Side Project Failures
Jonathan has made plenty of mistakes in his growing mountain of side project fails. Learn from his failures, so you don't have to make the same ones, and maybe find some success in your own projects!
Fortune IkechiCan you tame the Node.js Event Loop?
Node.js is all about speed and efficiency, but its magic lies in the hidden world of the event loop. In this session, we will dive deep into the inner workings of the event loop, exploring how it processes tasks and the potential pitfalls that can hinder performance. We will discuss strategies for optimizing event loop utilization, including best practices for asynchronous programming and avoiding blocking operations. By the end of this session, you will have a solid grasp of the event loop and be equipped with the knowledge to create Node.js applications that consistently deliver exceptional performance. The session will be in quiz mode– we will be interacting with the audience asking quickfire questions- the first to answer wins a prize.
Niels LeenheerTo be revealed
Niels has shown some of the most amazing web API with hardware demos over the years at HalfStack. He's back again to share something fun with us.
