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Julian User

@julianuser9

Senior Full Stack Developer at APTONET, migrating Norfolk Southern’s Angular 14 and Java 8 applications to Angular 18 and Java 21.

Mexico

Message

At APTONET, I develop enterprise applications for Norfolk Southern and led the migration of the Angular front end from version 14 to 18 and the Java backend from version 8 to 21. I also build Spring Boot microservices and use Apache Kafka for asynchronous, event-driven communication.

For América Móvil–Telcel, I defined and reviewed enterprise architecture from design through deployment, and introduced Apache Kafka for communication between microservices. I trained and mentored five developers on Kafka fundamentals and best practices.

Across work for FEMSA–Oxxo, FedEx, Lumen/CenturyLink and other clients, I’ve developed Java enterprise applications, web services and e-commerce functionality. At FEMSA Comercio–Oxxo, I was recognized for improving project health and raising the maintenance cell’s effectiveness from 65% to 92%.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

APTONET

Jun 2021 - Present (5 years 4 months)

Developed enterprise applications with Java EE 8–21 and Angular 15 (NGRX) under Agile methodology, leading migrations from Angular 14 to 18 and Java 8 to 21. Implemented event-driven microservices with Apache Kafka and maintained 100% code quality under Sonar standards.

Java Spring Boot Kafka JPA Hibernate SQL Server Angular TypeScript NgRX OpenShift GitHub JaCoCo Junit Mockito Jest Jenkins Gradle Sonar Nexus IntelliJ IDEA Agile qTest Enterprise Architect

Senior Software Engineer

Consiss

Feb 2026 - Jul 2026 (5 months)

Acted as a Senior Software Engineer on a project with several problems and a 2-year delay; the team was able to move the project to production in 4 months, fixing a large volume of bug tickets and documenting issues, tasks and stories in Microsoft Azure.

Java Spring Boot JPA Hibernate PostgreSQL GitHub Gradle Sonar IntelliJ IDEA Azure

Software Architect

Indra Software Labs / NTTData / Neoris

Oct 2021 - May 2025 (3 years 7 months)

Defined and reviewed enterprise architecture for new and current applications for the Telcel account, working end-to-end from design through deployment. Introduced Apache Kafka into the account's architecture for asynchronous, event-driven communication between microservices.

Java Spring Boot JPA Hibernate Pl SQL Kafka Gitlab JaCoCo Junit Mockito Jenkins Maven Sonar Nexus Eclipse

Senior Java Developer

Consiss

Jan 2018 - May 2022 (4 years 4 months)

Managed change control for the Cuanti system, which administers the initial configuration of promotions and commercialized items across FEMSA–Oxxo stores. Developed and maintained a worldwide sales e-commerce platform using Spring Boot, Spring MVC, and Hibernate.

Java Spring Boot Spring MVC SpringBatch Hibernate JPA Oracle SQL Server REST SOAP SoapUI Junit Git Maven

Senior Full Stack Java Engineer

Alliance IT

Mar 2020 - Jun 2021 (1 year 3 months)

Designed technical solutions for a monolithic application, adding new screens, building microservices, and resolving database performance issues. Migrated frontend screens from JSP/Spring MVC to Vue.js and TypeScript.

Java Spring Boot JPA Hibernate Pl SQL Tomcat Vue.Js TypeScript GitHub JaCoCo Junit Mockito Jenkins Maven Nexus IntelliJ IDEA Agile SQL Developer JSP Spring Framework

Senior Full Stack Java Engineer

APTONET

Apr 2019 - Jan 2020 (9 months)

Defined requirements and business rules for enterprise applications built on Java EE 7, using Agile methodology and Enterprise Architect for technical documentation. Developed REST services with JPA/Hibernate and Spring Boot, and built reusable Angular 8 component libraries.

Java JPA Hibernate SQL Server JBoss Angular GitHub JaCoCo Junit Mockito Jasmine Jenkins Gradle Sonar Nexus IntelliJ IDEA Agile

Senior Java Developer

Alliance IT

Feb 2018 - Mar 2019 (1 year 1 month)

Modernized manual business processes into automated Java SE applications and delivered Workflow-platform solutions as Technology Platform Specialist. Developed web screens with Java, Spring, jQuery, and Oracle PL/SQL stored procedures.

Java Spring MVC Spring AOP Hibernate JPA DWR Ultimus Workflow jQuery JQGrid Dojo JSP JSF PrimeFaces Pl SQL SOAP Maven Ant Jenkins Nexus SVN Git

Senior Java Developer & Technical Lead

Consiss

Jan 2015 - Feb 2018 (3 years 1 month)

Acted as Technology Platform Specialist, Design Specialist and Systems Analyst for FEMSA–Oxxo's Workflow area, owning solutions end-to-end. Led development of a worldwide sales e-commerce platform using Spring Boot, Spring MVC, and Hibernate.

Java Spring Boot Spring MVC SpringBatch Hibernate JPA Oracle AngularJS Selenium SVN Git Maven Junit XSLT Enterprise Architect

Senior Java Developer

HITSS

Aug 2011 - Dec 2015 (4 years 4 months)

Owned requirements gathering through release for América Móvil–Telcel, designing and building components on Java SE/EE, Spring MVC, and Hibernate. Developed RESTful and SOAP web services and implemented multi-threading for concurrent data modifications.

Java Spring MVC SpringBatch JPA JDBC Hibernate REST SOAP Informix Oracle JSF PrimeFaces Jenkins Maven SVN JavaScript HTML CSS

Senior Java Software Engineer

Consiss

Mar 2010 - Jul 2011 (1 year 4 months)

Delivered CRM and reporting functionality for FEMSA–Oxxo, from requirements gathering and database design through coding and delivery. Built internal testing tools that reduced manual QA effort and improved team productivity.

Java Spring MVC JSP JavaScript Oracle jQuery DWR Dojo POI SVN CVS

Java Software Engineer / Programmer

4F Systems

Jun 2009 - Mar 2010 (9 months)

Delivered a high-level system design and application improvements under the TSP/PSP methodology for a nationwide production system. Improved performance and rebuilt modules using Struts, Spring, and Hibernate.

Java J2EE Oracle JSP Struts Hibernate SOAP

Java Programmer / Data Capturer

Dirección General del Estado de Zacatecas

Mar 2008 - Jun 2009 (1 year 3 months)

Owned the full development life cycle for internal Java applications while also teaching programming fundamentals. Diagnosed and fixed defects in a Java/J2EE system (SWB) and provided extensive technical support.

Java J2EE UML HTML CSS JavaScript