Juan Antonio Sandoval Delgado

Guadalajara, Jalisco. México.

Software engineer

I’m a graduate of Instituto Tecnológico de Tepic in México at 2009, where I studied Computer Systems Engineering.

Since 2009 I have been working as a software developer focused in web technologies with experience designing and building a variety of systems for services, financial and healthing sectors.

I am a passionate engineer who enjoy to learn new technologies. I like to be involved in open source projects, courses and initiatives in my region.

My expertise areas cover:

  • Web technologies
  • Java / Scala
  • Javascript / Dojo / NodeJS
  • Spring
  • SQL
  • NoSQL

Current obsession:

  • Reactive applications
  • Analytics
  • Functional programming

Wizeline (Guadalajara, Jalisco)

Software Engineer (Technical lead) (2016 - Present)

Wizeline offers product lifecycle software powered by customer intelligence.

IBM (Guadalajara, Jalisco)

Software Developer (Technical lead) - TS4500 (2012 - 2016)

Development of the interface management for the IBM TS4500 storage product. The interface management is a modern web based GUI that allows users administrate and monitoring a tape library. The tape library can work in a distributed environment where the GUI works in a multi node mode and replicates their content through every node.

  • Design and implementation of the data access layer of the application and implementation of a connection pool.
  • Implementation of Java JAAS module to support a generic authentication and authorization for the application. Now the web application supports local authentication (data base) and remote authentication (LDAP and Kerberos).
  • Implementation of a cache layer in the backend to improve performance and life cycle of Java objects. The cache framework implemented was Apache JCS.
  • Design and implementation of widgets with Dojo Toolkit and Javascript for the front end.

Software Developer (Technical lead) - CleanDesk (2015 - 2016)

Development of mobile application for “IBM Clean Desk” initiative.

I am a solid contributor designing and writing code for the back end and sometimes for the front end too. The back end is supported through a REST API in Node.js deployed on the cloud with the following technologies:

  • Node.js
  • Cloudant (NoSQL)
  • IBM Bluemix (SaaS)

And Apache Cordova for the front end.

Atalaya Systems - A4Sys (Guadalajara, Jalisco)

Atalaya Systems now A4Sys, is a mexican company focused on financial services for banks

Software Developer (2010 - 2012)

Development of a web application for the process of pre-initialization of credits accounts for banks. The web application guides the bank officer through the process of analysis for customers and their credit score to determine in base a variety of variables if a customer is a candidate for a credit.

  • Development of new modules for the bank application with Java Servlet technology (JSP), Spring Framework and Hibernate for the backend.
  • Development of SOAP and REST services for the communication between the application and other external entities.
  • Technical leader in the implementation and roadmap in the use of web technologies used in the application.
  • Use of JQuery and dynamic web for the front end.
  • Development of batch process that are scheduled for running in a low traffic moment at the bank daily process.
  • Development of stored procedures in Oracle data base.
  • Development of reports in JasperReports.

Medisist (Guadalajara, Jalisco)

Medisist is a mexican company focused on the administration of hospitals

Software Developer (2009 - 2010)

Development of an ERP for health services in private medical hospitals.

  • Migration of the module of ophthalmology from VB6 application to the .Net Framework (3.0)
  • Development of stored procedures in SQLServer.
  • Development of reports in Crystal Reports.

Other projects

  • Conway’s Game of Life

    • This application allows you to play with the Game of life of Conway. It is written in Scala. And is open source.
  • Personal web site

    • Is my personal web site and blog that is deployed over Github Pages using Hugo and Go.
  • jTuringMachine

    • It is a tool that permits represent graphically Turing machines in the form of graphs, as well as to validate a text for the Turing machine represented in question. The application is written in Java. And is open source.


  • Reactive Web Applications with Play and Scala (Workshop | Tech Women Community Guadalajara - Guadalajara Java User Group)
  • Diseño y desarrollo de una REST API en la plataforma Java/Scala (Workshop | Tech Women Community Guadalajara)
  • Adopting a JSR - JSR 367: API for JSON Binding (JSON-B) (Initiative | Guadalajara Java User Group)
  • Seguridad en Java (Talk | Guadalajara Java User Group)

Education and training


  • Oracle Certified Expert, Java EE 6 Web Component Developer
  • Oracle Certified Expert, Java EE 6 Web Services Developer
  • Oracle Certified Professional, Java SE 6 Programmer


  • Functional Programming Principles in Scala - Coursera (École Polytechnique Fédérale de Lausanne)
  • M101x Introduction to MongoDB using the MEAN Stack - edX (MongoDB University)
  • Enabling Technologies for Data Science and Analytics: The Internet of Things - edX (Columbia University)
  • Introduction to Linux - edX (Linux Foundation)
  • M101J: MongoDB for Java Developers - MongoDB University
  • Java SE 8 Lambdas and Streams - Oracle