Guillermo Alejandro Stevens Ramírez

Software Engineer - Morgan Stanley Since Aug 2021

• Working on a system that allows traders to manage and access documents which contain technical information. Technologies include Java 8, ElasticSearch, Angular 8, Sybase and others. This is a full-time position.

Full Stack Software Engineer - Bank of America Mar 2020 - Jun 2021

• I'm working in the "Aim Re-Write and Re-Platform" project, which objective is to create a modernized Associate Investment Monitoring (AIM) system, creating operational excellence and substantial ongoing cost reductions; it will further provide a stabilized system, reducing downtime and existing inefficiencies experienced by end-users.
• I work as a Full Stack Software Engineer, coding new features which involve both backend and frontend.
• Technology stack for this project:
  • The backend is being developed in Java 8 (via webservices with Spring Boot); the dependencies are managed using Apache Maven (XML).
  • The frontend is built with Angular 11/Material to provide a responsive UI/UX.
  • The database is Oracle DB v12.2.0
  • JSON is the data format between frontend and backend.
  • Ansible Tower for deploying the app, Jira for managing the project requirements, SonarQube for bugs/issues inspection.
• This is a contract position (hired by TEKsystems). Contract started on March 2020.

Senior Software Engineer - Bank of New York Mellon Aug 2019 - Feb 2020

• I worked on the "Liquid Plus" system (structured as a micro services application), which is an intraday liquidity monitoring application used by BNY Mellon's Customer Service Desk, Global Ops and Corporate Treasury with the following features:
  • Provide BNY Mellon with visibility into payment and deposit activity enterprise-wide for direct USD, GBP and EUR clearing channels.
  • Enables liquidity monitoring at the clearing channel, legal entity, line of business, client and counterparty levels.
  • Captures, records and monitors intraday and historical payment activity.
  • Stores transactional data, which will be used for trend analysis and to calibrate alerts when real-time activity deviates from historical level.
• Technologies/tools used include Java 8, Oracle and Vertica DB, Kafka, Docker, Jenkins, Veracode, Swagger, Kibana and Tomcat.
• I coded RESTful webservices built with Spring Boot, multithreaded code with lambda expressions and wrote unit tests using Randoop.
• This was a contract position (hired by Genuent Global). Contract ended in February 2020.

Full Stack Engineer - Goldman Sachs Jan 2019 - Jul 2019

• The goal of this project was to modernize a legacy application.
• The frontend was built with JavaScript (AngularJS v1.6.4). The backend was developed in Java 8. The DB was MongoDB.
• The application framework for both the frontend and backend was Vert.x
• I was member of a team with 8 developers.
• As a Full Stack Engineer my time was spent 80% on the front-end and 20% on the back-end.
• I created custom directives, services and controllers for the two-way data bindings including auto complete widgets, grids/tables, checkbox directives, timeline widgets and other functionalities through extensive usage of $scope, ng-controller, ng-grid, ng-model, ng-repeat and others.
• I was involved in writing application-level code to interact with APIs and Web Services (RESTful).
• Frameworks/extensions used include D3, CKEditor, JQuery (and JQuery UI), SCSS and Bootstrap.
• I've also had to add or modify existing Java 8 code in the Backend (new endpoints and extend the webservices that process the requests from the UI).
This was a contract position (hired by ITC Infotech). Project ended in July 2019.

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I was not authorized to work from May 2018 to Jan 2019

Senior Software Engineer - Barclays Bank Dec 2015 - Apr 2018

• Hired as a fulltime employee by Infosys in México on December 2015; I relocated to NYC to work onsite for one of Infosys' clients: Barclays Bank (from March 2016 to April 2018).
• Used AngularJS (ver. 1.3) and C# in the development of a responsive web application used internally by Infosys.
• Worked in a 12-member team.
• Served Backend Java Developer role for the Flight Deck system, a CRM tool used internally by Barclays Bank which ranks trading customers by return on capital.
• Participated in all stages of design, development and deployment.
• Main tasks included developing servlets and RESTful web services in Java 7, stored procedures in MS SQL server and creating Linux shell scripts.
• The Web Services performed business logic and provided general data which are required by, and displayed on, a web system (UI).
• Development tools and Technologies include Eclipse, P4, GIT, Maven, Spring, JBoss and MS SQL Server Studio.
• Syncing of databases in development, staging and production environments.
• Used Apache POI for reading and writing Excel files.
• Generated dynamic reports as PDF or Excel files.
• Created a Java module for processing many records and upload them to Salesforce for performing further business logic.
• Added certificates to the JRE certificate store.
• Assisted teammates in debugging the projects and solving issues.

Senior Software Engineer - MSIGHTS Aug 2013 - Dec 2015

• I helped develop from scratch a reporting system for leads from online advertisements:
  • The backend of said reporting system was developed in Java, which was an API for fetching data/leads from several sources which include social networks like Facebook, Instagram, SlideShare, Twitter, YouTube and Google Plus.
  • This API was developed using Apache Axis2.
  • The Front-end for this reporting system was developed as an Excel add-in and a user-friendly UI for connecting to the API as well as intuitive visualization tools.
  • The UI was developed in C# using WPF (Windows Presentation Foundation) and backend communication using WCF (Windows Communication Foundation).
  • The UI allows the users and clients to perform operations and generate reports easily.
• Designed data models, tables, triggers stored procedures, constraints, cursors and SQL queries (MS SQL Server).
• I wrote a few PHP scripts for testing our API.
• This was a fulltime position. MSIGHTS is a small company/startup.

Senior Software Engineer - Ternium Sep 2011 - Jul 2013

• Ported a legacy Windows application written in Visual Basic .NET to C++ running on QNX, including a complete revamping of the user interface as well as improving the data exchange format. This system runs on real time and is used by technical operators in a steel mill on a constant basis.
• Created Oracle stored procedures and database schemas for storing data coming from sensors and actuators.
• Successfully ported MATLAB code to C++, which implements mathematical models that are useful in the operation of the steel mill.
• This was a fulltime position (hired by AMI GE).

Senior Software Engineer - Bank of America Sep 2008 - Sep 2011

• Remotely worked with a 6-member team based at Bank of America's offices in North Carolina.
• Created a concurrent automated process in Java for monitoring tasks for the FileNet system.
• Upgraded a legacy Dynamic-Link Library which interacts with the Oracle Call Interface.
• Developed a Visual Basic multi-threaded tool for quickly migrating millions of image files from one server to another.
• Developed many Java MVC applications, and database schemas, as needed by the client.
• Trained new team members on Core Java and other programming languages and technologies.
• Developed several frontend systems, based on JSP and with functionality powered by JQuery and AJAX.
• Created HTML websites mockups/sketches using HTML, plain JavaScript and CSS.
• Created Excel Macros using VBA.
• I was a fulltime employee for Infosys, assigned to this project with Bank of America.

Software Engineer - General Electric Mar 2008 - Sep 2008

• Backend and Frontend developer working on a web system, adding new functionality as well as fixing bugs.
• Designed and reformat JSP pages for GE's web system.
• Technologies used include Java, Struts, JavaScript (JQuery and AJAX), XSLT, and Microsoft SQL Server.
• This was a fulltime position (hired by Softtek).

Software Engineer - Tenaris Tamsa Oct 2006 - Feb 2008

• Adapted the Weka system (a Java classification engine powered by Artificial Intelligence/Machine Learning algorithms) to the Heat Treatment of the manufacturing process of steel pipes.
• This system was deployed as both a stand-alone application and as a Java Applet.
• Built ML models using Decision Trees and Bayesian Classifiers.
• Created custom visualization tools (in Java Swing).
• The data were stored in MySQL databases (created database schemas, stored procedures and functions, connected through JDBC).
• A few features of this classification engine were ported to C#.
• This was a contract position (hired by Manpower Group).