93 Feet East, London
12th of November 2025
Afterparty
200 brilliant JS and web people gathering in Shoreditch for a day that's actually worth your time. Local London talent plus presenters from around the world, zero sales nonsense, proper food and drinks, and an afterparty featuring our notorious JS Pub Quiz and karaoke.
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Our Illustrious Presenters

Each of our events has between 8 and 12 sessions. We update our presenter 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.

  • Jo Franchetti
    Jo Franchetti

    RolePlAI

    Jo has amazed the HalfStack community with the LED Christmas jumper, LED mask captioning, and a serverless seance. This year Jo will delight us with their adventures in writing a procgen/generative roleplay game for the web.

  • Rob Bateman
    Rob Bateman

    Circles All The Way Down

    Rob has wowed us with his previous sessions over the past decade on building complex game engines and games in the web. This year Rob take us down the journey of circles. Circles are one of the most straightforward geometric shapes, containing a certain pleasing symmetry and simplicity adored by both artists and the natural world alike. They are also an incredibly useful programming tool, in everything from function derivation and sound reproduction, to places as unexpected as algorithmic drawing and compression routines. In this session we will explore some of the lesser known applications of the humble circle, and see just how deep the rabbit hole goes.

  • Eduardo Aparicio Cardenes
    Eduardo Aparicio Cardenes

    Shift left on API client generation

    Eduardo is a regular attendee at HalfStack, and will take the stage for the first time this year. Well, first time if you ignore his excellent karaoke at the afterparty last year. Generate once, use everywhere Modern development often suffers from two fundamental misalignments: Frontend and Backend teams are racing toward the same feature, but from opposite directions, and almost always at different speeds. And boilerplate duplication efforts across multiple projects when syncing data between the Frontend and Backend. This session explores how we can eliminate that friction by treating the API contract as the source of truth and using it to generate the frontend client SDK automatically that can be shared across your development ecosystem (Web, Mobile, Backoffice, clients, etc). We are talking about real client code: fully-typed, runtime-validated, error-handling-capable, built instantly from a single file.

  • HalfStack
    HalfStack

    We have announced our first few presenters, with more to be revealed soon.


Two conference speakers with dog masks on
Three smiling conference attendees with VR headsets on

Our Wonderful Sponsors

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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.

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