Christian Caldera
Verified Expert in Engineering
Software Developer
Gomez Palacio, Mexico
Toptal member since February 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, has published papers, and has 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.
Portfolio
Experience
- .NET - 10 years
- Microsoft SQL Server - 10 years
- C# - 10 years
- Angular - 7 years
- Azure - 7 years
- Microservices - 6 years
- ASP.NET Core - 6 years
- Bootstrap - 3 years
Availability
Preferred Environment
GitHub, Windows, Azure, .NET Core, .NET 5
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.
Work Experience
Azure Stack Developer
Wegmans - Main
- Developed several Azure functions and features to support the project and achieve the defined goals.
- Worked on multiple changes and refactors for infrastructure as code pipelines using Azure and Bicep files.
- Conducted bug tracking and fixed the code, services, and infrastructure.
Full-stack .Net Developer
Toptal Client
- Designed and developed two brand-new cloud-based apps using Microsoft Azure.
- Refactored a legacy application to use the latest technologies such as Angular, .NET 7, and Azure.
- Applied basic Terraform scripts to create infrastructure builds.
.NET Team Lead Developer
Toptal Client
- Managed a small team of developers to develop two critical projects for the company.
- Worked on data migration and UI changes in a company merge project.
- Led the development involving ASPX, ASP Web Forms, ASP MVC, ASP API, and ASP.NET Core.
Senior .NET and Azure Developer
Toptal Clients
- Worked on 14 web API microservices deployed on Azure.
- Wrote unit tests and integration tests for the services.
- Developed several apps to support the platforms we worked on.
Senior Full-stack Developer
RFA Mortgages
- Maintained and developed a web app for financial services.
- Maintained and developed some support services for the main app.
- Participated in multiple architectural decisions and implementations.
.NET Lead Developer
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.
Freelance Front-end Developer
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.
Freelance Webmaster
Allegria Spa (via Toptal)
- Maintained a web application.
- Did styles, files, and content updates.
- Helped to fix minor bugs.
Freelance Senior Full-stack Developer
Vox Global (via Toptal)
- Worked with AngularJS to create client-side applications to build reports dynamically.
Senior Software Developer
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.
Machine Learning Expert/Developer
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.
Software Engineer Contractor
Hewlett Packard
- Supported four critical financial applications used for all countries.
- Developed new functionalities for critical applications with a high impact on the business.
- Implemented new functionalities on QA and production environments.
- Analyzed and designed new functionalities for high-impact applications.
- Led the development team through all the application lifecycle.
Analyst Programmer
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.
Experience
GoHerbalife
https://www.herbalife.com/es-mxMinesweeper Using Angular and .NET Core Web API
https://github.com/ccaldera/minesweeper-APIEducation
Master's Degree in IT Project Management
Tecnológico de Monterrey - Mexico
Master’s Degree in Computer Science and Engineering
Instituto Tecnológico de La Laguna - Torreon, Coahuila, Mexico
Bachelor's Degree in Computer Engineering
Universidad Politécnica Gómez Palacio - Gomez Palacio, Durango, Mexico
Certifications
HIPAA Training 2024
Accountable HQ
Skills
Libraries/APIs
REST APIs, MediatR, Entity Framework, Azure Blob Storage API, jQuery, Google Maps, Google Maps API, Web API, ASPX, AutoMapper, Linq2SQL
Tools
NuGet, Postman, Visual Studio, TFS, GitHub, Azure DevOps Services, Azure Search, Azure App Service, Git, Dapper, Subversion (SVN), Visual Studio 2015, Azure Key Vault, Jira, LINQ to SQL, MQTT
Languages
SQL, C#, HTML5, JavaScript, C#.NET, TypeScript, T-SQL (Transact-SQL), CSS, CSS3, Flash ActionScript, HTML, GraphQL
Frameworks
Angular, ASP.NET Core, ASP.NET MVC, ASP.NET, ASP.NET Web API, .NET, Entity 5, ASP.NET Web Forms, Razor, .NET Core, Entity Framework Core, Swagger, .NET 8, Bootstrap, AngularJS, ASP.NET MVC 4, Adobe Flex, MVC Razor, .NET 5
Paradigms
Object-oriented Programming (OOP), REST, Microservices, Event-driven Architecture, Real-time Systems, RESTful Development, Unit Testing, HIPAA Compliance
Platforms
Azure, Azure Functions, Azure PaaS, Azure Event Hubs, Windows, Azure Service Fabric, Amazon Web Services (AWS)
Storage
Azure SQL, Microsoft SQL Server, Databases, PL/SQL, Azure DocumentDB, Azure Queue Storage, MongoDB, Azure Websites, MySQL, Azure Cosmos DB, Azure Blobs, Redis, Database as a Service (DBaaS), JSON, Azure Table Storage, Azure Active Directory
Other
Web Services, Windows Communication Foundation (WCF), Full-stack, APIs, Back-end, API Integration, Cloud, Software, Web MVC, Back-end Development, Azure Service Bus, Azure Worker Roles, Azure Web Roles, Leadership, Architecture, Pattern Design, WebSockets, Technical Leadership, CI/CD Pipelines, Cloud Architecture, WCF Web Services, VM, Microsoft Azure, Adobe LiveCycle, Tokenization, Azure Stream Analytics, Octopus Deploy, IT Project Management, Digital Transformation, Business Models, Software Development, Machine Learning, Software Architecture, Domain-driven Design (DDD), IT Management, Real-time Data
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