About this Event
CityJS + AI Conference returns to Kensington Town Hall in 2026
Bringing you the latest innovations in Web Technologies, Artificial Intelligence, and modern Frontend and Backend engineering.
As a community-led event, for developers, by developers, CityJS cuts through the noise to deliver practical insights, deep-dive workshops, and meaningful networking opportunities. Expect a day focused on real-world applications, emerging tools, and the people shaping the future of the web and AI.
Whether you’re looking to sharpen your skills, explore new technologies, or connect with like-minded professionals from allover the globe, CityJS offers an inspiring conference experience.
JavaScript Community & a Decade of Building Together
I started CityJS over a decade ago as a local JavaScript meetup, simply to bring developers together to learn, share ideas, and feel part of a community. What began as small gatherings greworganically, driven by curiosity, generosity, and a shared love for JavaScript.
As I travelled and connected with developers around the world, CityJS grew alongside those relationships. We welcomed people from allover the globe, built friendships across borders, and invited some of the most influential voices in JavaScript to share their knowledge with the community. The goal was always to bring great people together in an open and welcoming environment.
We are very aware of how quickly the ecosystem evolves. CityJS continues to grow alongside new technologies, senior engineering practices, and AI-influenced workflows, adapting our programme while staying true to our values. CityJS would not exist without the support of our sponsors and partners. Your involvement allows us to invest in education, inclusivity, and long-term community growth. If you believe in supporting developers and helping this community continue to grow, I’d welcome you to join me on this journey.
Aris
Founder & Main Organiser, CityJS
Schedule
15 April 19:00 - 21:00, Central London - Free Meetup
15 Apr 09:00 - 18:00, Just Eat Offices - Professional Workshops
16 Apr 09:00 - 18:00, Just Eat Offices - Professional & Free Workshops
17 Apr 09:00 - 17:00, Kensington Town Hall - Full Conference Day
Workshop Day 1 - 15/04
🕑: 04:00 PM - 07:00 PM
PRO - From Lizard to Wizard
Info: by Dan Neciu
15-04-2026, 16:00 - 19:00
Just Eat Offices 2 Fleet Pl, London EC4M 7RF
Workshop Day 2 - 16/04
🕑: 09:00 AM - 01:00 PM
High-Performance Node.js: From Event Loop Mastery to Production Observability
Host: Matteo Collina
Info: by Matteo Collina, 16-04-2026 09:00 - 13:00 - Just Eat Offices
🕑: 10:00 AM - 01:00 PM
Playbook for Scalable, Resilient Systems with Next.js (gb)
Info: by Faris Aziz
16-04-2026, 10:00 - 13:00
Just Eat Offices 2 Fleet Pl, London EC4M 7RF
🕑: 01:00 PM - 04:00 PM
Mastering Production-Grade Patterns with TanStack
Info: by Faris Aziz
16-04-2026 - 13:00 - 16:00
Just Eat Offices 2 Fleet Pl, London EC4M 7RF
🕑: 01:00 PM - 04:00 PM
PRO - Real-World React: React Core and Performance Patterns
Info: by Matheus Albuquerque
16 Apr - 13:00 - 16:00
Just Eat Offices 2 Fleet Pl, London EC4M 7RF
🕑: 11:00 AM - 01:00 PM
JavaScript: The Good Parts In Review
Host: Douglas Crockford
Info: by Douglas Crockford
16-04-2026, 11:00 - 13:30
Just Eat Offices 2 Fleet Pl, London EC4M 7RF
Conference Day 17/04
🕑: 09:00 AM - 05:00 PM
Conference Day - 3 Tracks
Event Venue & Nearby Stays
Kensington Town Hall, Hornton Street, London, United Kingdom
GBP 150.00 to GBP 960.00
