Chris Guzman

Vonage Team Member

Chris is a Developer Advocate at Nexmo where he helps developers use their global communications platform. When he’s not at conferences you can find him roaming the world.

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Make and receive phone calls in Android apps with Firebase

This tutorial shows how to make a Android app that can make outbound phone calls and receive incoming phone calls Firebase Functions, JavaScript an...

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Jul 03, 2018

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Add Two-Factor Authentication to Android Apps with Nexmo’s Verify API

This two-factor authentication (2FA) tutorial explains how to set up an Android app to network with a server configured to use Nexmo Verify. You'll...

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May 10, 2018

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Nexmo Verify API Implementation Guide

This implementation guide will instruct you on how to set up a server to use the Nexmo Verify API for two-factor authentication (2FA) with your iOS...

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May 10, 2018

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Build a Chat App with Lifecycle-Aware Components for Android

Learn how to add lifecycle-aware components to a simple Android chat app using the Nexmo Stitch Android SDK. The components will help make your cod...

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Mar 28, 2018

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How to Handle Inbound Phone Calls with Ruby on Rails

In this Nexmo Voice API tutorial, you will learn how to receive an inbound call by implementing a webhook endpoint in Ruby on Rails.

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Dec 21, 2017

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Receive Voice Call Events for a Call In Progress with Ruby on Rails

In this tutorial, you'll learn to determine when a voice call has connected or completed by listening for call events in your Ruby on Rails applica...

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Dec 19, 2017

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Make an Outbound Text-to-Speech Phone Call with Ruby on Rails

With the Nexmo Voice API, you can make worldwide outbound calls. All you need is your virtual phone number, the Ruby Gem, and a few lines of code.

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Nov 02, 2017

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How to Receive SMS Messages with Ruby on Rails

In this article you will learn how to receive an inbound SMS by implementing a simple webhook endpoint in Ruby on Rails.

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Oct 23, 2017

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Receive an SMS Delivery Receipt with Ruby on Rails

We will look at what it means for a message to be delivered, and how we can listen for SMS Delivery Receipts from Nexmo

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Oct 19, 2017

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Nexmo at Android Summit

Recently the Android team at Nexmo attended Android Summit in Tysons Corner, Virginia. Organized by the folks at Capital One the conference gathers...

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Sep 05, 2017

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All You Need to Know About Sending/Receiving SMS with Node.js

The Nexmo DevRel team has been blogging tutorials about how to use the Nexmo SMS API to add programmable SMS to Node.js applications using Express.

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Feb 28, 2017

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Full Voice API Support Coming in Nexmo Java Client v2.0

Announcing the snapshot release of v2.0 of the Nexmo Java client library with full Voice API support available via Gradle or Maven.

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Feb 06, 2017

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Welcoming the Newest Developer Advocate to the Nexmo DevRel Team: Chris Guzman

Howdy! I’m Chris and I’m excited to join the Developer Relations team at Nexmo. I’m based out of beautiful Baltimore, Maryland. Before joining Nexm...

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Dec 05, 2016