The JavaScript community is global.
Developers building enterprise applications in financial services, healthcare, logistics, and government share common challenges — performance at scale, long-term maintainability, accessibility requirements, and now, the growing pressure to integrate AI capabilities into production systems responsibly.
What they have not always had is a dedicated space to learn from each other.
That is what JS Days 2026 is designed to be.
Sencha's fourth annual free virtual JavaScript conference takes place on September 16–17, 2026, bringing together over 5,000 JavaScript developers, software architects, engineering leaders, and practitioners from around the world for two days of expert-led sessions, live Q&A, and interactive discussions.
The program covers the technologies, architectural decisions, and development practices shaping modern JavaScript applications — with sessions drawn directly from the challenges engineering teams are navigating in production today.
Registration is free. Attendees receive a free participation certificate upon completion.
Register at jsdays.io
A Global Gathering of JavaScript Practitioners
JS Days 2026 is more than a series of presentations.
It is a gathering of the global JavaScript community — developers at different stages of their careers, working across different industries, solving different problems, but sharing a common interest in building better software with JavaScript.
With over 5,000 attendees expected from around the world, the conference creates one of the largest annual gatherings of JavaScript practitioners in the virtual conference space.
The format reflects this. In addition to eight expert-led sessions across two days, JS Days 2026 includes live Q&A opportunities with every speaker and interactive discussion rooms where attendees can engage directly with practitioners, explore technical challenges, and connect with developers working on similar problems.
Eight Sessions.
Two Days.
Zero Cost.
The JS Days 2026 program is built around the questions JavaScript teams are already asking — not around product announcements or feature roadmaps.
Day One — September 16
Opening Keynote
James Cahill, General Manager at Sencha, opens the conference with a look at where enterprise JavaScript development is heading and what the community can expect from the Sencha ecosystem in the year ahead.
Building Custom AI Agents with JavaScript, React and ReExt
Marc Gusmano, Sales Engineer at Sencha, presents practical implementation patterns for building custom AI agents using JavaScript, React, and ReExt. The session focuses on architectural considerations and integration approaches that work in real production environments — not just in demos.
Generating Live Ext JS Apps on Top of Existing Databases With Indi Engine AI
Pavel Perminov, Solo Founder and Developer at Indi Engine AI, demonstrates how AI can generate live Ext JS applications directly from existing databases. For organizations looking to modernize data-driven interfaces without starting from scratch, this session addresses a very practical enterprise challenge.
Ext JS Dashboards for Supply Chain and Fleet Management
Wemerson Januario, Developer Advocate at Sencha, walks through how Ext JS dashboards handle the specific data complexity of supply chain and fleet management applications — real-world use cases with real data requirements.
Day Two — September 17
Case Study: Developing a Recruitment Application
César Martell, Software Developer, presents a detailed walkthrough of a real recruitment application — covering the technical decisions made throughout the development lifecycle and the lessons learned along the way. Production case studies provide insights that documentation and tutorials rarely can.
Build an AI-Driven Grading Logic with the JavaScript DataGrid
Andres Villalba, Sales Engineer at Sencha, demonstrates how AI-driven grading logic can be integrated directly with the JavaScript DataGrid — a practical look at combining intelligent data processing with enterprise-grade grid functionality.
Techniques for Large Data Handling in Ext JS
Rafael Méndez, Sencha MVP, shares practical techniques for managing large datasets efficiently in Ext JS applications. For teams building analytics dashboards and reporting tools, this session covers the performance strategies that matter most in production.
Making AI Analytics Safe and Simple for Enterprise JavaScript Developers
Stephen Ball and Montana Mendy from Yellowfin close the conference with a session on making AI analytics accessible and governable for enterprise teams — addressing the practical challenges of deploying intelligent analytics in environments where data integrity and compliance are non-negotiable.
Why Developers Keep Coming Back to JS Days
JS Days has grown every year since its first edition. The reason is straightforward.
The sessions are practitioner-led. The content is production-focused. The conversations go beyond surface-level introductions to address the architectural decisions, implementation trade-offs, and real-world challenges that matter to developers building serious applications.
And it is free — every year, without exception.
For developers who want to learn from practitioners solving real problems, connect with a global JavaScript community, and walk away with insights that apply directly to their work — JS Days delivers that without any cost barrier.
Who Should Attend
JS Days 2026 is designed for:
▪ JavaScript developers building enterprise or data-intensive applications
▪ Frontend engineers working with React, Ext JS, or ReExt
▪ Software architects evaluating AI integration in production workflows
▪ Engineering leaders tracking where JavaScript development is heading
▪ Developers at any stage looking to learn from practitioners with real production experience
Whether you are an experienced enterprise developer or just beginning to explore how AI fits into JavaScript applications — the program is built to provide value across experience levels and technical backgrounds.
A Conference Designed Around Technical Conversations
Technical conferences are most valuable when they create opportunities for discussion, not just presentations.
In addition to expert-led sessions, JS Days 2026 includes live Q&A sessions and interactive discussion rooms where attendees can engage directly with speakers, explore implementation challenges, and exchange ideas with JavaScript developers from around the world.
These conversations often extend beyond individual technologies to address broader engineering topics — architecture, maintainability, performance, and the practical realities of modern JavaScript development in enterprise environments.
More Than a Conference Agenda
The individual sessions at JS Days 2026 cover a wide range of technologies and engineering disciplines. Together they reflect a broader objective.
They address the practical challenges facing today's JavaScript teams — from integrating AI responsibly into production applications and building dashboards for complex enterprise environments, to handling large datasets efficiently and learning from real development experience.
Whether you are an experienced software architect, a frontend engineer, or a developer responsible for enterprise applications, the program is designed to provide technical insights that remain relevant long after the conference concludes.
Event Details
JS Days 2026
Dates: September 16–17, 2026
Format: Fully virtual
Cost: Free
Certificate: Free participation certificate for all attendees
Registration requires only a short online form at jsdays.io. Once registered, attendees will receive agenda updates, speaker announcements, and event access information ahead of the conference.
About Sencha
JS Days 2026 is organized by Sencha, part of Idera, Inc. — the team behind Ext JS, ReExt, and GXT. For decades, Sencha has helped organizations build secure, scalable, enterprise-grade JavaScript applications across industries including financial services, healthcare, manufacturing, government, and enterprise software. Today, Sencha technologies are trusted by more than 2 million developers and 150,000+ organizations worldwide.
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