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John Riviello

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

Progressive Web App Workshop

9:00 AM MDT

Let’s connect with PWAs! Progressive Web Apps seek to bridge the gap between native Android & iOS apps and the Web. Learn about the APIs available in today’s mobile devices that enable you to leverage web technologies to deliver app-like experiences without having to write a line of Kotlin or Swift.

We’ll cover many of the APis that make Progressive Web Apps possible while building a dating web app for cats. Topics include:

  • Installable PWAs
  • Offline mode with Service Workers
  • Geolocation
  • Capturing photos from the camera
  • Photo uploading
  • Voice recordings
  • Push Notifications

You’ll leave this full-day workshop armed with the hands-on experience to deliver a PWA that starts fast and stays fast.

The Decision Buy-In Algorithm

8:30 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.

Intro to Web Components with LitElement

11:00 AM MDT

Web Components are a set of web platform APIs that allow you to create new custom, reusable, encapsulated HTML tags which can be shared across frameworks.

This talk provides a deep introduction into how to author Web Components with LitElement, the most popular library for building fast, lightweight web components.

We’ll cover how LitElement reduces the code you have to write to build your own Custom Elements complete with scoped styles that Shadow DOM provides, and reactive properties that you expect from standard browser components. You’ll learn how lit-html, the rendering library for LitElement, makes writing your components easy while at the same time only re-rendering the specific content needed, not entire DOM subtrees (or virtual DOM) that other frameworks rely on.

You'll walk away with a solid understanding of how you could leverage Lit to build shareable components, design systems, and/or a full Progressive Web App.