toptal.com
Contact us: +1.888.604.3188
Christian Caldera, WebSockets Developer in Guadalajara, Mexico
Christian Caldera

WebSockets Developer in Guadalajara, Mexico

Member since January 29, 2016
Software development is Chris's greatest passion. He's always looking for something new to learn. Currently a senior developer, his goal is to be a software architect. He has a master’s degree in computer science and has published papers and given many talks about computer science. He's worked with companies like HP, Softtek, and Herbalife on critical business apps, so he knows how to work with distributed teams and high responsibility.
Christian is now available for hire
Hire Christian

Portfolio

Experience

Location

Guadalajara, Mexico

Availability

Part-time

Preferred Environment

Windows, TFS, SVN, VM, GitHub

The most amazing...

...thing I've coded is a web API using Windows Azure Cloud computing to calculate recommendations to third-party systems and their customers using AI.

Employment

  • .NET Lead Developer

    2017 - 2018
    Unosquare
    • Created several providers to communicate with external vendors allowing interaction between their app and different technologies using HTTP, SOAP, and TCP.
    • Led a team of five developers to deliver high-quality milestones for our client.
    • Designed a lot of ETL application processes to migrate vendors data to our database.
    Technologies: C#, MS SQL Server, WCF, Web API, TFS

  • Freelance Front-end Developer

    2017 - 2018
    Shapeshift (via Toptal)
    • Created a single-page app based on Angular 4 from scratch.
    • Created communication mechanisms for web sockets communication so the app could support real-time updates.
    • Helped on integration with the current application and its communication with the app.
    Technologies: Angular 4, Web Sockets, jQuery, CSS

  • Freelance Webmaster

    2016 - 2017
    Allegria Spa (via Toptal)
    • Maintained a web application.
    • Did styles, files, and content updates.
    • Helped to fix minor bugs.
    Technologies: ASP.NET, C#, HTML, CSS, MS SQL

  • Freelance Senior Full-stack Developer

    2016 - 2017
    Vox Global (via Toptal)
    • Worked with AngularJS to create client-side applications to build reports dynamically.
    Technologies: AngularJS, C#, ASP.NET, WebAPI, MS SQL Server

  • Senior Software Developer

    2014 - 2017
    Herbalife
    • Analyzed and designed new functionalities for an eCommerce page (no CMS used).
    • Developed new enhancements for both an eCommerce page and a page to configure multiple websites.
    • Managed and deployed software application updates on Windows Azure.
    • Provided production support for all our applications.
    • Developed front-end and back-end features using .NET technologies.
    Technologies: .NET, WCF, ASP.NET, JavaScript, HTML5, C#, CSS3, MVC 4.NET, SQL Server, TFS, Microsoft Azure

  • Machine Learning Expert/Developer

    2016 - 2016
    Waikato, Inc. (via Toptal)
    • Developed a web API using Microsoft .NET with token authorization.
    • Developed both front-end and back-end features.
    • Used Azure DocumentDB.
    • Used Fitbit’s web API.
    • Provided continuous integration with daily deployments to Microsoft Azure.
    Technologies: C# .NET, Visual Studio 2015, ASP.NET MVC, Web API with Token Authentication, MS SQL, Windows Azure, Azure DocumentDB, jQuery, JSON, RESTful

  • Software Engineer Contractor

    2013 - 2014
    Hewlett Packard
    • Supported four critical financial applications, used for all countries.
    • Developed new functionalities for critical applications with high impact in the business.
    • Implemented new functionalities on QA and production environments.
    • Analyzed and designed new functionalities for high-impact applications.
    • Led the development team on all the application lifecycle.
    Technologies: .NET, WCF, ASP.NET, JavaScript, HTML5, C#, CSS, MVC 4.NET, SQL Server

  • Analyst Programmer

    2011 - 2013
    GALFER IT
    • Developed front-end and back-end features using Adobe technology.
    • Developed new enhancements for an ERP system.
    • Provided production support for all our applications.
    • Migrated the database from Informix to SQL Server.
    • Looked after web servers.
    Technologies: Adobe Flex, ActionScript, ColdFusion, ColdFusion Reports, MS SQL Server, DataServices, PHP, MySQL, Adobe LiveCycle, HTML5, C#, ASP.NET, MVC Razor, jQuery, Google Maps API

Experience

Skills

  • Languages

    C#, HTML5, JavaScript, CSS3

  • Frameworks

    ASP.NET MVC, ASP.NET, ASP.NET Web API, .NET, Entity 5, Windows Communication Framework (WCF), ASP.NET Web Forms, Razor, Angular, ASP.NET Core, Bootstrap, AngularJS

  • Paradigms

    Object-oriented Programming (OOP), REST, Real-time Systems

  • Storage

    Azure SQL, Azure DocumentDB, Azure Queues, MongoDB, Azure Websites, Microsoft SQL Server, MySQL, Azure Cosmos DB, Azure Blobs

  • Other

    Web Services, Azure Service Bus, Azure Worker Roles, Azure Web Roles, Leadership, Architecture, Pattern Design, WebSockets

  • Libraries/APIs

    Azure Blob Storage API, jQuery, Google Maps

  • Tools

    TFS, GitHub, Azure DevOps Services, Azure Search, Azure App Service

  • Platforms

    Azure PaaS, Azure, Azure Service Fabric

Education

  • Master's degree in Computer Engineering
    2013 - 2015
    Instituto Tecnológico de La Laguna - Torreon, Coahuila, Mexico
  • Bachelor's degree in Computer Engineering
    2010 - 2012
    Universidad Politécnica Gómez Palacio - Gomez Palacio, Durango, Mexico

To view more profiles

Join Toptal
Share it with others
Hire the top 3% of freelance developers TM