JS Belfast

​Date: Wednesday 25 March 2026

​Time: 18:00 – 20:00

​Location: Farset Labs

​JavaScript runs everywhere - browsers, servers, mobile apps, edge infrastructure, AI tooling, fintech systems, and beyond. JS Belfast brings together developers building across that landscape to share ideas, surface new developments, and stay current with one of the fastest-moving ecosystems in software.

​We are actively looking for more speakers. If you have something to share - new ideas, lessons learned, deep dives, or experiments - this is your platform.

​Talks

​Paul Treanor

​Software Engineer II @ Rapid7

​Multiplayer Is Easier Than You Think

​A practical look at building multiplayer browser games, covering technical architecture decisions, real-time communication patterns, and the UI considerations that make multiplayer experiences feel responsive and intuitive. Expect concrete examples and demystification of common assumptions about complexity.

​Luke Lucas (TBC)

​Software Engineer @ Hoppa Group

​JavaScript Is Not Slowing Down

​From new runtimes to ecosystem consolidation, JavaScript continues to expand into new domains. This talk breaks down the latest shifts across the OpenJS landscape, performance-focused runtimes, and the security realities of modern package ecosystems - and what they signal about where the platform is going next.

​Conor Woods

​Tech Lead @ PlotBox

​Local-First: The Future of Web Development

​Cloud-first is broken. Insecure, expensive, and quietly centralising power in ways most developers don't think about. Conor is making the case for a different way to build - and the tools are already here.

​Agenda

​18:00 – Doors Open & Networking Arrive, grab a seat, and connect with other developers.

​18:15 – Talk 1 Paul Treanor

​19:00 – Talk 2 (TBC) Luke Lucas

​19:30 – Talk 3
Conor Woods

​20:00 – Open Discussion & Community Announcements

​20:30 – Wrap Up