HolyJS 2026 Autumn — JavaScript conference with talks and workshops

About the event

HolyJS 2026 Autumn is a two-day JavaScript conference scheduled for 23–24 October in St Petersburg. It brings together developers working with frontend and backend technologies and offers several participation formats: talks and workshops take place in person, while parts of the programme are available online. The conference is suited to specialists following the evolution of JavaScript tools and discussing how to use them in software projects.

The 23 October programme includes talks on client-side caching, observability, SSR rendering, React Compiler and code-quality control when working with AI agents. On 24 October, announced topics include building interfaces with Figma MCP and connecting frontends to agentic applications through AG-UI. These examples give the conference a concrete engineering focus beyond general JavaScript trends.

The backend strand includes spec-driven development with Node.js, Clean Architecture and OpenSpec. Other streams consider where to draw frontend abstractions, when micro-frontends help, and how to maintain quality across large codebases. Developers can compare approaches to architecture, testing and AI tools while choosing between sessions that run at the same time.

Some workshops take place in the fourth hall without streaming or recording. This is an in-person format distinct from online access to other sessions. When choosing a ticket and planning the day, attendees should account for the format available for each session and build a schedule around parallel tracks.

The in-person programme runs on 23 and 24 October at Airportcity Plaza Congress Hotel, 6A Startovaya Street, St Petersburg. Remote participants can follow the streamed parts of the schedule. Ticket choice depends on the format of the sessions of interest, since some workshops require attendance in the hall.