Join us in 2025!
JSHeroes is a non-profit community-organized event, held every year in Cluj, Romania. Our goal is to bring together JS and Web/Frontend enthusiasts from all over the world for a single-track two-day conference with: quality content, amazing networking and tons of fun. You bring your ideas and desire to learn, we provide the relaxed atmosphere and the good vibes.
Our 7th edition will take place on the 29th and 30th of May 2025!
Tickets are available on our ti.to page.
Meet our 2025 speakers
- Andrei Pfeiffer Platform Engineer Smilecloud
- Atila Fassina Open-Source Developer SolidJS Team Member
- Bramus Van Damme Chrome Developer Relations Google
- Chelsea Troy ML Ops Engineer Mozilla
- Dan Shappir Principal Engineer Sisense
- Emilia Mureșan Technical Group Lead Modus Create
- Filip Sodic Founding Engineer Wasp
- Hidde de Vries Front-end and a11y specialist
- Ivan Akulov Senior Performance Engineer Framer
- Jean Burellier Principal Engineer Sanofi
- Jessica Janiuk Staff Software Engineer Google
- Josh Goldberg Open Source Maintainer
- Miriam Suzanne Front-end Architect Oddbird
- Nicolas Carlo Freelance Web Developer
- Sandrina Pereira Staff Frontend Engineer Remote.com
- Shai Reznik Team Lead Qwik
- Sophie Koonin Web Engineering Lead Monzo Bank
Bridging the gap
Our ecosystem has an abundance of technologies, tools, frameworks and services to deliver applications faster than ever before. With new standards and ways of building across multiple platforms, developers have wide toolkit at their disposal. But there’s a growing gap between our projects, with accumulated technical debt and complexity, and the tools and frameworks developed by the community. In 2025, we’re bridging that gap.
Our speakers will present solutions for common industry problems, highlight the strugles with managing complexity, maintainability and scalability and will explore new technologies, frameworks and standards that tackle all these concerns.
At JSHeroes, we always ventured outside the pure language ecosystem, so expect to see a variety of talks covering the entire landscape of web development and JavaScript as a universal programming language.
But of course, we will not neglect the human side of things, in our effort to paint a full picture for the development community in 2025.
Agenda
This is just a draft version of the agenda.
Day 1: Thursday May 29
- 08:00 - 09:00
Registration
- 09:10 - 09:30
Welcome to JSHeroes!
- 09:30 - 10:00 Andrei Pfeiffer The code etymologist
- 10:00 - 10:30 Sandrina Pereira Fullstack Forms validations with JSON Schemas
- 10:30 - 11:00
Coffee Break
- 11:00 - 11:30 Emilia Mureșan Lessons in Managing Technical Debt
- 11:30 - 12:00 Sophie Koonin So you’ve decided to do a technical migration
- 12:00 - 12:30 Nicolas Carlo 6 Safe Refactorings for Untested Legacy Code
- 12:30 - 14:00
Lunch Break
- 14:00 - 14:30 Atila Fassina Security-First Web Apps
- 14:30 - 15:00 Ivan Akulov Invisible Hand of React Performance
- 15:00 - 15:45
Coffee Break
- 15:45 - 16:15 Filip Sodic Treat the Compiler With Compassion
- 16:15 - 16:45 Chelsea Troy TBA
Day 2: Friday May 30
- 09:00 - 09:30
Welcome back!
- 09:30 - 10:00 Dan Shappir The hidden framework revolution: the comeback of RPC
- 10:00 - 10:30 Jean Burellier Reviving Express: A challenging road for Express 5.0
- 10:30 - 11:00
Coffee Break
- 11:00 - 11:30 Hidde de Vries Web platform features with a11y built in?
- 11:30 - 12:00 Miriam Suzanne TBA
- 12:00 - 12:30 Bramus Van Damme Scroll-Driven Animations with CSS
- 12:30 - 14:00
Lunch Break
- 14:00 - 14:30 Josh Goldberg Tooling Like It's 2025
- 14:30 - 15:00 Jessica Janiuk The latest with Angular
- 15:00 - 15:30
Coffee Break
- 15:30 - 16:30 Shai Reznik JavaScript Streaming - a Qwik Glimpse into an AI Optimized future
A transparency-first community event
We believe that the community and the open-source models are well suited for our core values: learning, teaching and knowledge sharing. Our mission is to inspire other communities with the concept of open-source events.
We’re publishing all data about this conference, in full transparency. We are also available at any time for inquires and we’re really looking forward to sharing our knowledge about organizing international events. This way, whenever a community wants to start something similar, they can build on our knowledge.
If you are interested in supporting us, check out our sponsorship page .
Event partners
Media partners
Venue and facilities
We are hosting the JSHeroes 2025 conference at the Grand Hotel Italia, Vasile Conta Street number 2, Cluj-Napoca, Romania.
See directions on Google Maps.
All the event areas are wheelchair accessible, including the restrooms and the lunch area. You can read more about the venue facilities on our accesibility page.
Meet the organizers
- Ale Retegan
- Alex Moldovan
- Alexandra Mînzat
- Anamaria Oros
- Claudia Țicle
- Eliza Nițoi
- Florin Tomozei
- Irina Georgescu
- Radu Blana
- Vlad Ionescu
The event volunteers
- Alex Paușan
- Alexandru Lupu
- Ana Cojuhari
- Daniel Mocan
- Melania Moldovan
- Oana Muntean
- Oana Șipoș
And the brand ambassadors
- Andrei Antal
- Benedek Gagyi
- Carmen Popoviciu
- Ioana Chiorean
- Jeremias Menichelli
- Sara Vieira
- Tejas Kumar