HolyJS 2025 Autumn

JavaScript conference: from frontend to backend

3 days:

October 29online

November 20–21Saint Petersburg + ONLINEOnline broadcast is also availableCosmos Saint-Petersburg Pulkovskaya Hotel: Pobedy Square 1

Buy a ticket Schedule

FREE COMMUNITY DAY

Trial version of HolyJS 2025 Autumn. Talks on October 29th are available for free for all. Just register.

Start: 00:00 – Finish: 00:00
JSON in → App Out: From Tables and Documents to Graphs and Agent Memory
- Artemii Vereshchinskii
  RushDB
- Maria Kondaurova
  BIOCAD
- Aleksandr Korotaev
Start: 00:00 – Finish: 00:00
Transcoding Videos on the Web
- Stepan Mikhailiuk
  Lumen5
Start: 00:00 – Finish: 00:00
Building a RAG System in Node.js
- Alex Korzhikov
  HackerOne
- Pavel Kiselev
  ING
- Maria Kondaurova
  BIOCAD
- Aleksandr Korotaev

50speakers
45talks
10partners
900participants

About conference

HolyJS is an IT conference for anyone who uses JavaScript technologies for frontend and backend. Technical talks about JS development from different angles: web technologies, Node.js, graphics and animations, web3, blockchain...

We gather twice a year to discuss language updates, frameworks, and tools. In a unique JS community atmosphere, with offline and online networking.

The conference is held by JUG Ru Group.

Talk topics

Languages
Backend
UI/UX
Development Tools
Architecture
Graphics

Do you want to perform but have doubts?

We can answer your questions and help you prepare for the performance.

HolyJS in email

Conference news, featured content and promo codes. Not too often and to the point.

HolyJS in Telegram

Discuss talks and technologies. Stay updated on session announcements and conference news.

Join chat

Speakers

Vsevolod Kochnev
Sirena
Marat Zimnurov
Avito
Vasilii Alfertev
Open solutions
Yuriy Karpov
Sber
Valeriia Zelenaia
YADRO
Dmitrii Andriianov
Yandex
Denis Chernov
SM Lab
Pavel Vostrikov
Kaspersky
Maksim CHuguev
T-Bank
Serafima Chekulaeva
self. — IT community about career
Sergey Korobkov
self. — IT community about career
Alex Korzhikov
HackerOne
Pavel Kiselev
ING
Vladimir Tsyshnatiy
Positive Technologies
Ilia Sokolov
Uchi.ru
Alex Tushinski
VK
Edward Gigolaev
Yandex 360
Gary Anikin
RUTUBE
Georgii Mikhal
Sber
Natasha Arefeva
Rambler&Co
Artemii Vereshchinskii
RushDB
Andrei Elkin
Cycloid
Nikita Ulshin
T-Bank
Oleg Postnikov
Yandex Maps
Sergei Solovev
T-Bank
Maksim Medunetski
VK / VKontakte
Artyom Shovkin
Sber
Stepan Mikhailiuk
Lumen5
Andrey Sokolov
YADRO
Anton Nepsha
Sber
Artem Yashin
Aleksei Nagovitsyn
VK
Andrei Kuznetsov
2GIS
Igor Antonov
T-Bank
Anastasiia Egorova
YouTube-channel "CosyFrontend"
Nikita Vasiukov
VK
Egor Bykhovtsev
Yandex
Denis Ilyin
Chill House
Denis Kondratev
Tochka
Dmitrii KHolstinin
T-Bank
Pavel Uvarov
Kaspersky
Aleksandr Maltsev
Yandex Crowd
Vasilii Kubarko
Yandex 360
Anton Osyadovsky
Atom
Vasily Poltewskiy
RESO
Ivan Malyugin
beeline

Experts

Media

Blog at Habr.com
We publish transcripts of talks, interviews, and authors’ articles.
A rough Morning with HolyJS
HolyJS conference podcast.
Materials
Look at how past conferences have been held.
Selected Talks
Talks from different years caused the greatest response from the participants.

Conference features

The content selected by the experts
The content is included in the program only after it has been checked by the program committee, which has experts with wide experience in JS development.
4K video
So that you can see each character on the slides.
Support
Our support team will reply to you very soon and will not leave you alone.
Discussions
You may chat with speakers and experts right after the talk. Both online and offline.
Change of scene
Offline is back. This is a chance to change the scene, listen to live talks, chat with your colleagues, and just enjoy your time at the afterparty offline.
TechTalks
There is lots of technical content with a little bit of non-technical content. Our conferences will help you find your way in the industry by teaching you about trends, tools, approaches, and global language and platform updates.