All sessions from October 7 are now on YouTube.
If you missed a session, or want to watch one again, all of them are now online.
WHAT HAPPENED AND WHO SPOKE
The day featured sessions from speakers including Anastasia Kazakova, Matt Ellis, Matthias Koch, and Mehul Harry. The recap notes what each speaker covered, from JetBrains Air demonstrations to AI-integration concepts and security topics.
AIR AND RIDER INTEGRATIONS ACROSS SESSIONS
Anastasia opened with how agents are changing what developers need from their tools and introducing JetBrains Air. Matt followed with a demo of Air in Rider, including a task in a sample app and review notes that sent the agent back for another pass.
- Air is available as a plugin for Rider 2026.2 and is bundled with Rider starting with the 2026.3 EAP. You can also try Junie Lite, a free version of Junie, right from the Air model picker. Learn more at jetbrains.com/air.
SESSION HIGHLIGHTS AND CAPABILITIES
Matthias demonstrated an agent with the dottrace-analyze skill to read profiling data and trace hot paths, illustrating improved agent accuracy.
Mehul discussed options for .NET developers to use ReSharper in VS Code and Cursor when working outside Rider.
- dottrace-analyze skill improves agent accuracy from 4.7 to 8.1 out of 10 (as described in the recap).
- AI-related productivity discussions and problem-to-user-story workflows were shared.
SECURITY, ARCHITECTURE, AND PRODUCTIVITY THEMES
The recap touches on security topics such as how .NET code can be vulnerable to code injection through NuGet and MSBuild and how to reduce risk.
Architectural patterns (Outbox, Inbox, Saga) and the modular monolith concept are discussed as ways to balance simplicity and team autonomy.
POST-EVENT UPDATES AND WHAT’S NEXT
JetBrains noted ongoing updates for Rider and ReSharper (e.g., versions 2026.2.x) and collaboration efforts with Microsoft Defender for Windows Developers.
The event also announced GameDev Day on September 28 and signals ongoing community and tooling development.
- Rider 2026.2.3 adds AI performance analysis tools and updates to the AI Agent Setup widget.
- GameDev Day is planned as a follow-on event with practical talks for game development.
WHAT THIS MEANS FOR DEVELOPERS
The recordings provide a consolidated source of hands-on demonstrations (Air in Rider, integration with agents, and security tooling) and indicate JetBrains’ intent to broaden tooling coverage across IDEs and workflows.
The post-event notes emphasize continuing updates to major tools and new materials for developers exploring AI-assisted workflows.
RELATED COVERAGE
- JetBrains dotInsights October 2026: ReSharper and Rider updates, Rider 2026.3 Early Access, and a Defender-backed startup-timing focus
- Can Maven be encoded as a neural network? What the JetBrains evidence actually shows
- Explainer: What Cloudflare’s Verified Bots evidence teaches about trust, not just identity
- Explainer: GitHub Slack/Teams multi-repo update signals cross-repo collaboration
- Developer Tools articles
SOURCES
- The JetBrains Blog: JetBrains .NET Day Online 2026: Watch the Recordings Published · Primary source
