Candidate 020
Full Stack Java Developer
South Plainfield, NJ
Summary
Results-driven Full Stack Java Developer with 12+ years of experience in designing, developing, and deploying scalable enterprise applications across finance, healthcare, federal, and technology domains. Expertise in Java, Spring Boot, REST APIs, Angular, SQL/NoSQL databases, and cloud-based microservices. Skilled in building secure, high-performance systems with proven ability to optimize workflows, improve deployment efficiency, and mentor teams. Adept in Agile/Scrum methodologies, CI/CD pipelines, and cross-functional collaboration. Strong problem-solving and debugging skills with a focus on delivering high-quality, maintainable code.
Professional Experience
Java Developer
NCS Technologies
04/2011 – 02/2012
- Built reporting features with Spring MVC, Jasper Reports, REST APIs and Hibernate ORM for Vonage and AT&T clients.
- Enhanced order-taking web application using Struts, JBoss, J2EE and REST Web Services.
- Optimized database queries with SQL indexing and stored procedures, reducing response times.
Senior Java Developer
Mindteck Inc.
05/2012 – 11/2012
- Enhanced client’s e-marketing portal with new features using Struts, Java, REST APIs and PL/SQL.
- Improved UI components with jQuery and JavaScript ES6+, boosting user experience.
- Supported quarterly release cycles with TDD-based testing, Selenium automation and functional validation.
Senior Application Developer
Highmark Inc.
12/2012 – 04/2016
- Developed new portal modules for claims, spending accounts, digital ID cards and member health statements using Spring MVC, REST, SOAP, JSON/XML and Oracle DB.
- Integrated messaging using JMS Queues and MQ, ensuring real-time processing and reliability.
- Enhanced healthcare reform projects and public exchange initiatives by implementing secure microservices and optimized APIs.
- Collaborated with cross-functional teams in Agile setting to deliver mission-critical features ahead of deadlines.
Application Consultant
Column Technologies
05/2016 – 07/2017
- Designed and developed custom IAM solutions using Core Java, Angular, REST APIs and XML/XSD schemas.
- Built IIQ plugin to integrate analytics dashboards with identity management data, enabling real-time insights.
- Developed a connector plugin for social media feeds using Angular, JavaScript and Event-Driven Architecture, improving reporting capabilities.
- Delivered multiple IAM artifacts for client environments, improving compliance and reducing access risks.
Software Engineer
Fiserv Inc.
08/2017 – 07/2022
- Led backend development for Banking Clearing Settlement System, boosting transaction accuracy by 65% using Core Java, Hibernate, RESTful APIs and JMS Queues.
- Enhanced Fedwire, SWIFT, ISO, and CHIPS payment workflows with SOAP & REST Web Services, strengthening real-time transaction processing.
- Built and optimized APIs with Spring Boot, JPA and PostgreSQL, reducing response time by 20%.
- Implemented unit and integration testing using JUnit 5, Mockito and REST Assured, increasing test coverage and reducing defects.
- Migrated SWIFT Payments module to ISO20022 standard, leading a team of 5 engineers under Agile delivery.
- Collaborated with UI team to enhance front-end modules using JavaScript (ES6+), JSP and AJAX.
Senior Consultant
CGI Federal Inc.
08/2022 – 05/2025
- Developed and maintained enterprise-level web applications for the U.S. Environmental Protection
- Agency (EPA) using Java, Spring Boot, REST APIs, Angular, PostgreSQL and NoSQL databases.
- Served as Senior Lead for NeT Applications, handling nationwide permit processing; optimized microservices APIs improving system efficiency by 25%.
- Built and secured RESTful services integrating Spring Security & JWT authentication, ensuring compliance with EPA security standards.
- Designed new UI interface with Angular, improving user engagement by 90% through responsive, accessible design.
- Streamlined CI/CD pipelines with GitHub Actions and Azure Cloud, reducing deployment times by 30%.
- Conducted peer code reviews in GitHub, improving team code quality and reducing post-deployment bugs.
- Applied Agile/Scrum practices for sprint planning, backlog refinement and cross-team collaboration.
Project Experience
No items found.
Technical Skills
Programming & OOP
:
Core Java (Advanced), Java SE, OOP Principles (Inheritance, Polymorphism, Abstraction, Encapsulation), Java 8+ (Streams, Lambda Expressions), Multithreading, Memory Management
Backend Development
:
Spring Core, Spring MVC, Spring Boot Microservices, RESTful APIs, Spring Data JPA/Hibernate, Spring Security & JWT, Microservices Architecture (Eureka)
Frontend Development
:
HTML5, CSS3, JavaScript (ES6+), React, Responsive Design (Bootstrap, Tailwind CSS), AJAX, Client-Side Routing, Webpack/npm/Vite
Databases
:
MySQL, PostgreSQL, MongoDB
DevOps & Cloud
:
Git/GitHub/GitLab, Jenkins, GitHub Actions, Docker, Kubernetes, AWS (EC2, S3, RDS, Lambda)
Testing & QA
:
JUnit 5, Mockito, Postman, REST Assured, Selenium
Other Tools & Frameworks
:
JMS Queue, JSON/XML Processing, XML/XSD Schema, Event-Driven Architecture, SLF4J, Logback, Jasper Reports, Jira, Confluence, UML
Methodologies
:
Agile/Scrum, BDD, TDD, CI/CD
Certifications
No items found.
Education
New Jersey Institute of Technology
MS, IT Administration & Security
2009 – 2011
ELS Language Center, Manhattan
ESL Program
2006
Escuela Colombiana de Ingenieria, Colombia
BS, Electrical & Computer Engineering
2005
References
No items found.
