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# Fast by Design: A Masterclass in High-Performance Web Engineering


- **Event:** World Congress 2026 North America

## Description

Attending this masterclass, you will be able to architect, monitor, and troubleshoot complex web performance regressions using a combination of deep-dive manual diagnostics and AI-assisted workflows. It moves beyond high-level theory to provide a technical roadmap for engineering resilient, high-speed digital experiences in high-stakes environments.

We kick off with a level-setting session to ensure everyone is aligned on the core metrics that define the modern user experience, including the foundational principles and nuances of Core Web Vitals.

Moving into active diagnostics, we will examine live production performance issues found on major corporate websites to see how bottlenecks manifest in the real world. You will learn to navigate the complex landscape of monitoring by comparing Real User Monitoring (RUM), Synthetic testing, and APM. We will demonstrate how combining these tools with CI/CD regression tests builds a robust observability strategy that catches issues before they impact your bottom line.

We will also focus on the evolving role and impact of Artificial Intelligence in performance engineering, including DevTools MCP to automate trace analysis, leveraging LLMs to refactor rendering-heavy JavaScript and redundant CSS.

The day will also feature a hands-on "performance gauntlet" where you will apply these techniques to debug and resolve real issues in a live codebase, so bring your laptop.

This masterclass is designed for web professionals who want to move beyond automated scores and master the art of modern performance engineering.

## Speaker

### [Aaron Grogg](https://www.wearedevelopers.com/@aaron-grogg)

Senior web developer, committed to improving the user experience by improving web performance


## Related talks at this congress

- [How to generate business value through performance optimizations](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1686-how-to-generate) — Nikolai Sidiropulo
- [Building Pragmatic AI: 10 AI Features Your Users Actually Want](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1406-building-pragmatic) — Jonathan "J." Tower
- [Ship 10x Faster: AI-Powered Development with Claude Code and MCP Tools](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1433-ship-10x-faster-ai) — Viktoria Semaan
- [AI-Driven API Design](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1402-ai-driven-api-design) — Mike Amundsen

## Watch remotely

Can’t make it to San José? Watch this session live with Pro. You also get:

- All full videos, bookmarks, and playlists
- World Congress livestreams

[See pricing](https://www.wearedevelopers.com/pricing)

## Links

- [Get tickets](https://www.wearedevelopers.com/world-congress-north-america/tickets)