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Alonso Ayala Ortega

Alonso Ayala Ortega

Delicias, Mexico
Member since October 20, 2015
Alonso is a professional software engineer with 6+ years of experience creating highly maintainable software products. He's an experienced full-stack developer geared towards QA. His great communication skills and his keen eye for specification analysis allow him to deliver bug-free solutions which entirely meet the client requirements.
Alonso is now available for hire
  • Java, 6 years
  • JavaScript, 4 years
  • RESTful Web Services, 4 years
  • Linux, 4 years
  • QA Automation, 4 years
  • Behavior-driven Development (BDD), 3 years
  • Cucumber, 3 years
  • ES6, 2 years
Delicias, Mexico
Preferred Environment
CI/CD, E2E Testing Coverage, Maven, IDEA, Git
The most amazing...
...project I've created is a loyalty system that integrates multiple full-stack technologies which include a Cucumber/BDD module that runs acceptance E2E tests.
  • Software Engineer
    Sonar Trading
    2018 - PRESENT
    • Created a module to connect to a currency trading exchange using concurrent algorithms.
    • Created and improved integration tests, which helped us verify the quality of the application.
    Technologies: Java 8, LMAX Disruptor, JUnit 5
  • Software Engineer/QA
    Sabre Airline Solutions
    2016 - PRESENT
    • Created automated acceptance tests using a homegrown API client framework, AssertJ, and Hamcrest.
    • Created a Cucumber/BDD project that helped business analysts create auto-verifiable specifications.
    • Helped the QA team finish their testing plan for some of the released versions of the system.
    • Delivered 100% bug-free solutions for a REST API module that consumes data from internal and external web services and produces information in JSON format aimed at our React.js web app.
    • Used test-driven development for bug solving and feature creation.
    • Developed full-stack flight reservation solutions.
    Technologies: RESTful services, Java, Spring, JUnit, Mockito, React.js/Redux
  • Software Engineer
    2014 - 2016
    • Supported RESTful web services modules that provided travel solutions for multiple airlines and travel agents around the world.
    • Created automation tests using Selenium WebDriver and improved the automation framework using the page object model.
    • Assured the quality of SQL migration scripts by making optimizations that made no-downtime system upgrades possible.
    • Applied SOLID principles and XP practices like test-driven development, code reviews, and pair programming in order to create clean code features.
    • Developed front-end solutions using JavaScript, Ember.js, and Handlebars.
    • Supported a connectors module which gathered information from multiple external global distribution systems (GDS).
    • Created optimized SQL scripts to run data migrations using Psql and pgAdmin 3.
    Technologies: Selenium WebDriver, RESTful services, Java, Spring, JUnit, EasyMock, Maven, Git, JavaScript, Web Services, PostgreSQL
  • Software Engineer
    2013 - 2014
    • Troubleshot tricky defects found in Oracle ADF and Oracle JDBC frameworks.
    • Helped the QA team run functional tests using Oracle Application Testing Suite (OATS).
    • Supported a tax collection system using Oracle ADF BC, ADF Faces, and Java Swing.
    • Solved critical bugs in Java and PL/SQL code using JDeveloper and SQL Developer.
    • Verified Java and PL/SQL code and Oracle database schemas to apply possible optimizations.
    • Made several performance improvements to stored procedures applying optimizations to PL/SQL code and Oracle database tables.
    Technologies: Java, Oracle Database, Oracle Application Testing Suite, Oracle ADF, PL/SQL
  • Software Developer
    Union de Credito Progreso S.A. de C.V.
    2010 - 2013
    • Created a mobile banking Android app that consumed web services from the core banking module.
    • Made optimizations to T-SQL cursors that reduced its processing time up to 70%.
    • Created T-SQL scripts to automate account charges using SQL Server scheduled tasks.
    • Supported an online banking application developed in ASP.NET and SQL Server 2005.
    • Implemented multi-factor user authentication to our web banking application using RSA SecurID hardware tokens.
    Technologies: Android, .NET, SQL Server
  • BBO and Trading Simulator (Development)

    BBO app (Best Bid and Offer) that connects to an exchange provider using its REST API and web socket endpoints.

    It retrieves BTC trades and current orders in real time showing the best bids and best asks in the UI.

    It also simulates trade orders based on a "contrarian" algorithm which creates trades based on BTC price downticks and upticks.

    * Java FX8
    * Concurrent programming
    * Web Sockets
    * REST API

  • GreatAppXYZ (Development)

    A codebase that works as a template to create SaaS projects based on a full-stack microservices architecture that integrates Spring Cloud and React.js/Redux as main technologies.

    The solution combines the following services:

    * Behavior-driven development module that verifies the system's specifications by running E2E tests.
    * Authentication service (Spring Security OAuth2).
    * Discovery service (Netflix Eureka).
    * Database service (PostgreSQL).
    * Configuration service (Spring Configuration)
    * API services (Spring Boot)
    * Single-page web application (React/Redux).

    Technologies: Spring Cloud, React.js, ES6, Gradle, Cucumber, JsonPath, Webpack, Lodash.js, JDBC.

  • Monedero Bingo API Services (Development)

    Monedero Bingo is a SaaS solution that allows companies to give loyalty points to their customers and clients using their phone number. Customers can redeem their points to get promotions and giveaways.

    It provides a robust REST API service intended for internal use but also aimed at external clients.

    It also has a BDD module that specifies the system features using Cucumber Gherkin syntax and validates them by running functional E2E tests.

    Technologies: Spring IoC, Java, EasyMock, JDBC, PostgreSQL, Cucumber.

  • Monedero Bingo Web App (Development)

    Single-page web app that consumes Monedero Bingo API services and allows companies to configure redemption and promotion strategies.

    Technologies: AngularJS, Mocha, Bootstrap, CSS, HTML.

  • Monedero Bingo Android App (Development)

    A mobile application that consumes services from Monedero Bingo API.

    It allows users to visualize their loyalty points and lookup for available promotions among multiple providers.

  • Xaldo - Mobile App for Service Bill Management (Development)

    An Android App and API services platform that allows the user to check and pay their bills from multiple providers in one single place.

  • Blog Website (Other amazing things)

    Static web project hosted in GitHub web pages whose content is generated using Jekyll.

    It's a simple but elegant project which elegance is reflected in the website.

  • Progreso Mobile (Development)

    Mobile Android app the allows users to transfer money between accounts, make service payments, and check account balance history among other banking transactions.

  • Test-driven React.js Development: React.js Unit Testing with Enzyme and Jest (Publication)
    Any piece of code that has no tests is said to be legacy code according to Michael Feathers. Therefore, one of the best ways to avoid creating legacy code is using test-driven development (TDD). While there are many tools available to create unit tests in JavaScript and, in this post, we will use Jest and Enzyme to create a React.js component with basic functionality using TDD.
  • Languages
    JavaScript, Java, ES6
  • Frameworks
    Mockito, JUnit, Spring, Spring Security, Redux, .NET, Jest
  • Tools
    Cucumber, Git, IntelliJ IDEA, Subversion (SVN), Mocha, Maven, Gradle
  • Paradigms
    Test-driven Development (TDD), Behavior-driven Development (BDD), Agile Software Development
  • Platforms
    Linux, Android
  • Storage
    JSON, Oracle PL/SQL, PostgreSQL
  • Misc
    RESTful Web Services, QA Automation, Spring Cloud, Data Structures, Algorithms
  • Libraries/APIs
    React.js, Node.js
  • Bachelor of Science degree in Computer Engineering
    Instituto Tecnologico de Delicias - Chihuahua, Mexico
    2006 - 2010
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