Guillermo Castro

Implemented an API Integration for intra-corporate use using Spring Boot. Implemented and maintained a gateway system to connect several Learning Management Systems with multiple Cengage Content Systems using different APIs.

Provided professional IT consulting services specializing in Java Development

Implemented an API Integration for intra-corporate use using Spring Boot and maintained a gateway system to connect several Learning Management Systems

Designed and implemented multiple microservices using Camel with Spring Boot for Enterprise Integration between multiple systems

Designed a microservices oriented REST backend platform for e-commerce

Managed an external development team as well as provided IT support on everything technology related. Designed a REST API microservices oriented application that will serve as the backbone of every system (fulfillment, order management, inventory tracking, etc.).

Development and support of multiple backend systems using Open Source frameworks Apache Camel, Karaf, ActiveMQ

Implemented multiple backend systems for Zappos utilizing modern frameworks like Spring, including API connections to external systems like Stripe, AWS, Amazon Marketplace, and internal systems for product categorization management, warehouse management, etc.

Created SOA based services for the Leapfrog Connect application and the Learning Path site using OSS frameworks like Spring, Apache CXF, Mule, Maven2. Worked with Oracle PL/SQL.

Partnership to do contract development work

Design and development of multiple internal systems using Spring, Struts, JEE, Websphere, SunONE, JBoss, Oracle, MySQL, Teradata.

Software consulting for Softtek clients in the US, including GE Wind and Citigroup, on-site and remote.

Designed ERP applications in .NET with C# and ASP.NET. Established a distributed system authentication infrastructure for the project and trained new personnel on software methodologies and programming standards.

Designed, implemented and deployed multiple e-commerce sites using ATG Dynamo Commerce Server and J2EE. Proposed and Deployed a standard development environment using CVS, Ant and Eclipse. Coordinated development with external consultants.

Designed and implemented an online forum system in PHP. Trained new hires on Object Oriented Programming, Java and UML concepts.

Designed and developed multiple Java based systems for Dextra Tehcnologies's clients including Inktomi, Apple, Portal Software, and other companies in the financial and tech market.