John Riviello

Engineering Fellow @ Comcast

John Riviello created his first hypertext document on the Internet in 1996 and has been obsessed with building for the web ever since. He spends his days as Engineering Fellow and Lead Frontend Developer at Comcast, where he works on the Xfinity customer websites and web applications. He is a Google Developer Expert in Web Technologies and
the author of the LinkedIn Learning course “CSS to Sass: Converting an Existing Site.” In his free time, he prefers surfing waves over surfing the Internet.

Presentations

Web Components across Frameworks

8:30 AM MDT

Web Components allow developers to create reusable components without a framework.

During this talk we’ll learn about Custom Elements, Template, and Shadow Dom specifications with code examples and different tools like Angular to help you utilize these new APIs. We’ll also cover an example custom element that Comcast is using across all of its sites for millions of users. We’ll also demo off component libraries and show how easy they are to integrate into existing sites.

Hands on Performance Tuning PWAs

10:30 AM MDT

Performance is the number one feature for Progressive web apps to compete with Native Apps. To remove jank from the experience, the Chrome dev tools provide some excellent insight into the root cause.

Let's explore how to find issues in your app and keep your PWAs feeling Native.

The Decision Buy-In Algorithm

8:00 PM MDT

Making large, important technical decisions is a critical aspect of a software engineer's role. With the wide impact these decisions can have, it is essential to make the correct decision. Even more vital is ensuring the decision is made and communicated in a way that the team members impacted by it trust and buy-in to the decision. Otherwise, even the best decisions will never realize their full potential when executed.

This case study examines how Comcast has employed the Analytic Hierarchy Process (AHP), a decision-making framework developed in the 1970s, and adapted it for making technical and non-technical decisions both large and small. We will cover the key aspects that have made it successful for engineering teams, what we learned from our early mistakes, signs that the decision-making process you use is working effectively, and how you can easily leverage the AHP for your decisions.