Gilberto Leon Email & Phone Number

Denver, Colorado, United States

As a Software Engineer at Lockheed Martin, I play an integral role within a remote scrum team, operating in an agile environment. My work is dedicated to advancing several full-stack applications utilizing state-of-the-art technologies like Java-17, Spring-Boot, and ReactJs. My key responsibilities encompass a wide spectrum: Authentication and Security: I actively contribute to the development of secure systems by implementing OAuth2 authentication and authorization protocols, effectively fortifying our applications against potential security threats and ensuring the protection of sensitive data. Data Integration Excellence: My role involves seamless integration with Tibco APIs, streamlining data virtualization processes and enabling efficient data retrieval, which is vital for our applications' performance. Cloud-Centric Deployment: I'm deeply involved in deploying our applications onto the cloud via CI/CD pipelines, ensuring that our software reaches the intended users swiftly and reliably, aligned with Lockheed Martin's high standards. Containerization Support: I provide support for our container orchestration platform as part of my responsibilities, assisting in maintaining the reliability, scalability, and security of OpenShift, which is critical to our operations. Automation and Efficiency: My contributions extend to configuring Helm, the Kubernetes package manager, to automate the deployment and management of our application's components, streamlining our development process and enhancing overall system stability.In addition to these responsibilities, I am actively engaged in the development and maintenance of an innovative Angular 14.2.10 / Net C# application hosted on AWS, Kubernetes, OpenShift, and Helm. These experiences highlight my proficiency in software development and my ability to navigate the intricacies of cloud deployment and containerization, all contributing to the delivery of efficient, scalable, and reliable software solutions.

Vermont, United States

As a Sr. Software Engineer at Hitachi Solutions, I worked remotely as part of a scrum team in an agile environment. During my tenure, I was responsible for a variety of tasks and contributed to the success of the team, including:Working on the integration process of the DPN system for major Inmar clients such as Kroger, ShopRite, and Harris Teeter.Documenting business processes and mapping modules using Confluence Wiki, ensuring accurate and up-to-date documentation.Serving as a system expert and providing support for a J2EE application running on Wildfly (JBOSS) servers, Oracle, Kafka, and SOLR on an AWS environment.Building the whole application infrastructure into Azure, including Cassandra, Kafka, Apache SOLR, and Splunk, streamlining and improving the application's performance.Migrating Oracle DB (on AWS) to SqlServer (on Azure) cloud platform, ensuring a smooth and seamless transition.Performing SQL statements conversion on Java applications (Oracle to SQL Server), ensuring efficient database operations.Executing SLA performance comparison and tuning Azure environment to reach the current AWS SLA (Service Level Agreement) metrics using Apache JMeter, improving the application's performance and reliability.Creating a Proof of Concept Java application to implement Azure Blob Storage to replace AWS S3, improving data storage and retrieval efficiency.Deploying the application on CentOS VM servers using Ansible playbooks and Jenkins, ensuring efficient deployment and management.Overall, my role as a Sr. Software Engineer at Hitachi Solutions enabled me to leverage my skills in software development, cloud deployment, and system administration to improve the application's performance, reliability, and scalability, and contributed to the success of the team.

Conshohocken, Pennsylvania

As a Senior Full Stack Developer at Liberty Mutual on the Surety Team, I played a pivotal role in shaping and delivering transformative solutions for the Agency and Product Management division. Operating within an Agile/DevOps ecosystem, I harnessed my expertise in Java 8, SpringBoot, Thyme-leaf, MSSQL Server, and various libraries to craft microservices applications and design essential APIs.Key Contributions:Authentication Expertise: I implemented robust authentication strategies using Ping OAuth2 and Azure-AD, fortifying data security and access controls.DevOps Proficiency: Managed CloudForge, Bitbucket (GIT), Confluence (Wiki), SonarQube (Code Analysis), Bamboo (CI/CD), Jira (Product Management), Swagger-UI (API analysis), and Splunk (Server log file analysis) for seamless DevOps.Training and Coaching: I coached developers in technologies like Ping authentication, Flyway database integration, and Angular 2, enhancing the team's proficiency and project outcomes.Innovation Advocate: I proactively recommended and executed solutions that improved efficiency and processes, delivering tangible benefits to upper management.Cloud Migration: I successfully oversaw the migration of applications and databases to cloud environments using CloudForge, resulting in improved system performance and significant infrastructure cost reductions.Tech Advancements: I led the upgrade of the Agency Management Application from AngularJS 1.5 to Angular 8, resulting in a markedly enhanced user experience and substantial productivity gains.Optimized Data Retrieval: Through the replacement of Java APIs with new ElasticSearch APIs for Surety Agency Management, I achieved remarkable improvements in data retrieval speed and accuracy, while meticulously overseeing the implementation of new ElasticSearch API environments to ensure seamless transitions and enhanced system performance.

New Jersey

As a Senior Software Engineer at Sirius XM, I led the development of several key projects aimed at enhancing the user experience and improving the efficiency of search and recommendation services.One of my major achievements was designing and developing a new Dashboard application using modern web technologies such as VueJS, Vuetify, Coach-base, and NodeJS. This centralizes the configuration of all services related to search and recommendation, making it easy for users to access and manage them from a single location.I also managed the development of a dashboard used to challenge the SiriusXM client app experience. This dashboard was built using Microsoft .Net C#, HTML, CSS, JavaScript, and JQuery. I worked closely with stakeholders to understand their needs and ensure that the dashboard met their requirements.In addition to dashboard development, I designed complex queries in SOLR to meet the evolving requirements of SiriusXM Satellite Radio search. I also implemented Java REST APIs deployed on AWS related to search and user personalization specifications.Overall, my work at Sirius XM was focused on delivering high-quality software solutions that improve the user experience and drive business success. I worked collaboratively with other engineers and stakeholders to ensure that all projects were completed on time and to the highest standards of quality.

Remote

Creating OEE application for Coca Cola Bottler Inc. Cayey Puerto Rico.

1 Federal St, Camden, Nj 08103

• Architecture reactive application (Symphony) using html5, Angularjs, BootstrapJS, Drools Rule Engine, Java 1.8, RESTFul, Camel ActiveMQ, myBatis and PostGreQSL. This UI Application is used to manipulate communication devices configuration in military equipments such as aircrafts, ships and submarines • Recommend and implement ideas to improve system performance and better user experience• Working hand by hand with Symphony System Engineers in the documentation and test of the new Symphony application• Creating RESTFul java classes to interact with ActimeMQ JMS and PostgreSQL through myBatis ORM • Designing and programming UI web modules using HTML5, BootstrapJS, and AngularJS to configure and manage devices in the Symphony application• Performing Unit and Functional tests in a TDD environment. Using JUnit, Mockito, JazzmineJS, SeleniumHQ to create testing classes and scripts to perform automatic test of the system• Creating design documents based on User Stories. Using UML to model business processes• Maintain code properly updated using GIT repository management software• Refactoring java and AngularJS programs by applying best code practices to improve system performance, simplicity, scalability and resilience • Actively participating on SCRUM daily stand up meetings • Performing peer code and documentation reviews • Acting as the Subject Matter Expert in the implementation of Drools as the rule engine application to decouple business logic from java classes• Training junior developers in the programming of Drools Rule Engine classes• Training System Engineers in the use of Drools Workbench to administrate business rules• Proactively participate in the sprint planning meetings to define the tasks to be performed• Using Eclipse and Maven on a daily basis to code java, HTML, BootstrapJS, and AngulaJS artifacts

Allentown, Pennsylvania Area

• Creating an Scenario Modeling Dashboard application (Web Based) using HTML5, CSS3, iCloud Google APIs, D3.js, Angularjs, Bootstrap/JS, Spring 4.2 Security Framework, MongoDB, JQuery, Tomcat 8 and Node.js • Assisting GIS expert in the download and processing earth images from Google Maps using Google APIs • Creating map and chart visualizations of production data such as sales, production, distribution, demand etc., using html5, css3, Java, Google MAPS APIs, Bootstraps, JQuery, Angularjs, MongoDB, JSON, AJAX and Javascript• Implement GIT as the standard change control management system• Installing and configuring Apache Tomcat 8.0 server for test and production environment• Installing and configuring MongoDB and design and implement the database structure • Establish security SSO on Air Products domain using JNDI and customized Spring Security framework• Consuming Web Services from data analysis providers such as DNB datasets• Creating RESTFUL API’s to do CRUD operations on DB, also creating client programs to consume the web services• Use Eclipse, Maven for coding the applications

Allentown, Pennsylvania Area

•Constructing and deploying integration interfaces using Mule Studio and Mule ESB. Developing interfaces between SAP, JDE and Magento systems. Part of the Team responsible of new Olympus Esource initiative. •Member of the team in charge of IQuote version 2 implementation. Developing web services interfaces for the new SAP ERP implementation.•Responsible of the new version of the Workflow Engine system (Quotes automatic approval routing application) for Olympus America and Canada. •Designing Jasper Reports using Jasper Studio for Workflow Engine application. Reports were published on Jasper Server or indepently using http or PDF format.• Programming interfaces between SugarCRM, Magento and AS/400 JDE and SAP ERP using JEE and SOA technologies. Creating web front-end applications and testing them on multiples Internet Browsers such as Mozilla, IE, Chrome, Safari, and Opera to ensure all around compatibility and uniformed experience. Web pages were designed using HTML, JSP, CSS, Javascript, JQuery, AJAX, JSON and GWT. Primary database used were Microsoft SQL Server and AS400 DB2. Debugging application using Eclipse Debug and Mozilla Inspect.•Creating control module user interface to manage the Sales Representative, Quotes, Trade-In, and Territories using Java EE, and Tomcat server. Deploy applications using Ant utility to generate war files. • Creating web services to synchronize products price updates in JDE applications and Magento. Application was developed on Java and deployed on servers using Ant utility to generate jar files. This process was executed automatically using cron and shell scripting.• Developing web services to integrate AS/400 JDE with CRM application SugarCRM. Create integration APIs between Ecommerce application Magento and the finance system. Also creating integration modules for the new ERP system SAP. Using Java EE and Mule ESB to generate the required web services. Main transport format used was XML, though sometimes JSON was used.

Champaign, Illinois

Senior Software Developer with vast experience in the telecommunications, health, manufacturing, and pharmaceutical industry. Over 4 years direct programming using Java/J2EE, SOA, SOAP, OOP, RDMS, ORM, AJAX, ODBC, Axis, JAXP, XML, Web services, Web Containers and Web Frameworks technologies. Well acquainted in the SDLC process, UML, architecture analysis, design, project management and development using diverse programming languages. Applying best programming's practices such as Waterfall, RAD and Agile.Business goal oriented with good interpersonal and communication skills acquired during my extensive consulting career

San Juan, Puerto Rico

• Closely collaborating with the UAT department’s coordinator for review the ITTS's test outcomes and correct any error reported as soon as possible in order to comply with the system release date • Making modifications to the IPTV Trouble Ticket System (ITTS). This multitier J2EE application uses Spring framework, Oracle database and Weblogic container and interface with CORBA to access and Metasolv (M6) APIs.• Serving as the liaison between the testers and developers to complete quality approval of the software development's• Creating the J2EE classes to integrate with Amdocs Ensemble billing system and produce the "Carriers Call Adjustments’ export"​ file. This saved at least one hour daily of machine process's time in the Mainframe• Implementing Subversion software's versioning control system for all the developments on the SIF Project ensuring a well structured control of the modifications and releases of software in production environment• Creating the System Requirement Specifications for several modules of the “PRT SIF” project. Most of these documents were praised by developers as very precise and clear

Guayama, Puerto Rico

• Design and developing an Employee Survey System in J2EE, Jasper Reports, Mysql Database and Tomcat container for the manufacturing area. The system was a great enhancement to the manufacturing area because it allowed to poll the employees opinion on the company matters timely and effectively• Installation and programming new computer wireless and HMI devices in the manufacturing areas • Installing and qualifying Microsoft Windows 2003 Servers for the SAP-ERP system deployment

Juncos, Puerto Rico

• Designing and developing the Overall Equipment Efficiency (OEE); a web-based system on ASPX and C# .Net Framework, IIS Server, and Oracle database. This system was a big achievement that impacted the company metrics of equipments use and personnel performance as well. The reports and graphics developed in Crystal Reports are key elements in the Board of Directors weekly meeting to monitor production and take business decisions

Cidra Puerto Rico

• Making LABC21 LIMS stored procedures modifications. The changes were part of the commitment with the FDA and was completed accordingly with the consent decree statements • Making BPCS manufacturing program’s modifications to comply with FDA regulations. Programs were done using AS/400 RPG and DB2

• Implemented the RPS (Resource Planning Schedule) System in the quality control department to manage QC analyst schedule and save thousands of dollars in overtime payments• Creating Java programs to migrate instruments information to Oracle database of new CCMS (Computer Calibration Management System) Procal implementation. This achievement was part of the FDA consent decree commitment completed on time and under budget• Managed project to implement the MP2 CMMS for all Puerto Rico sites (Manatí and Las Piedras plants). • Designing and developing the system to control vendor access to the plant. This web application was a big goal for the purchasing department in the control of vendor permits, insurance and licenses helping to expedite the access time of suppliers • Designing and developing an Employee Web Training and Assessment System. The system saved the company thousands of dollars in on-class room training to employees. The required trainings were posted over the Web and employees were able to learn and take related exams in their own desktop and remotely at any time.

Developing assorted programming for diverse kind of companies.

Master Of Science (M.Sc.), Information Open Systems, Summa Cum Laude

Bachelor Of Arts (B.A.), Music Performance, General, Cum Laude

Bachelor Of Applied Science (B.A.Sc.), Mathematics And Computer Science

Activities and Societies: Representative of the Mathematics Students Association

Multi-Cloud Architect Certification, Cloud Computing

Intense online training on Multicloud and DevOps with real-world hands-on projects.