Mathieu Nayrolles was born in France and lived in a small village in Côte d'Azur for almost 15 years. He started his computer science studies in France and continued in Montréal, Canada, where he now lives with his wife. Mathieu holds a PhD in electrical and computer engineering from Concordia University and two master degrees from eXia.Cesi (software engineering) and UQAM (computer science).

Despite his academic journey, Mathieu also worked for worldwide companies such as Ubisoft, Eurocopter, Ericsson, or Saint-Gobain, where he learned how important good technical resources are.

You can discover some of his works through his books: Expert Angular, Xamarin Studio for Android Programming: A C# Cookbook, Mastering Apache Solr: A practical guide to get to grips with Apache Solr, Instant Magento Performances, Magento Performance Optimization: How to, and Mastering Apache.

Rajesh Gunasundaram is a software architect, technical writer, and blogger. He has over 15 years of experience in the IT industry. He is a founder and editor of technical blogs programmerguide [dot] net and ioscorner [dot] com. He  has also written many books for Packt publishing and has a YouTube channel named ProgrammerGuide.

His technical strengths include Azure, Xamarin, ASP.NET MVC, Web API, WCF, .Net Framework / .Net Core, C#, Objective-C, Angular, Bot Framework, BizTalk, SQL Server, REST, SOA, design patterns and software architecture, Bootstrap, HTML5, and CSS3. He has also developed mobile applications. His expertise is in handling RESTful services in Angular.

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