Java Full-Stack Developer with Cloud & Microservices Expertise
Resume:
PROFILE SUMMARY
Java Full Stack Developer with *+ years of experience in designing, developing, testing, and deploying large-scale, distributed, and cloud-native enterprise applications using Java 8–17, J2EE, and Object-Oriented Programming (OOP) principles across Agile (Scrum), TDD, and Waterfall methodologies.
Strong expertise in backend development using Spring Boot, Spring Cloud, Spring MVC, Spring Security, Hibernate/JPA, JDBC, JMS, and Microservices Architecture, with hands-on experience building scalable, fault-tolerant RESTful APIs and GraphQL APIs.
Extensive experience in front-end development using React.js, Angular, HTML5, CSS3, JavaScript, TypeScript, Bootstrap, jQuery, and modern UI frameworks to build responsive, user-centric web applications.
Proven expertise in cloud platforms including AWS (EC2, S3, RDS, Lambda, EKS), Microsoft Azure (AKS), and PCF (Pivotal Cloud Foundry), with hands-on experience in containerization using Docker and orchestration using Kubernetes for horizontal scaling, load balancing, and high availability.
Strong experience in event-driven and messaging architectures using Apache Kafka, Spring Kafka, Apache ZooKeeper, and JMS for real-time data streaming, asynchronous communication, and enterprise integration.
Hands-on experience integrating AI/ML-powered services, including Generative AI Microservices, Large Language Models (LLMs), Natural Language Processing (NLP) pipelines, and AI-Assisted Fraud Detection APIs, leveraging GitHub Copilot and AI-driven development tools to improve productivity and code quality.
Expertise in security and identity management using OAuth 2.0, JWT, OpenID Connect, and Spring Security, ensuring secure API design and compliance with enterprise security and data protection standards.
Extensive experience with CI/CD Pipelines and DevOps Practices using Jenkins, GitHub Actions, Maven, Gradle, Ant, and Bamboo, along with version control systems such as Git and SVN for automated build, test, and deployment workflows.
Strong background in monitoring, logging, and observability using ELK Stack (Elasticsearch, Logstash, Kibana), Prometheus, and Grafana to ensure system reliability, performance optimization, and proactive issue resolution.
Proficient across the full SDLC, including requirements analysis, system design, development, testing, deployment, and production support, with solid experience in SOA, REST/SOAP Web Services, JAX-RS, JAX-WS, PL/SQL, Oracle Database, and enterprise application servers such as Apache Tomcat and IBM WebSphere.
PROFESSIONAL EXPERIENCE
Java Full Stack Developer Pacific life Insurance, Dallas, Texas, USA Jun 2025 - Current
Pacific Life Insurance is a financial services company focused on life insurance, annuities, and retirement solutions, serving individuals and institutions with long-term financial security products. I develop scalable server-side applications using Java, J2EE, Spring Boot, Spring MVC, and Spring Security, supporting enterprise insurance platforms and digital transformation initiatives.
Responsibilities:
Designed, developed, and maintained cloud-native microservices using Java 8/11/17, Spring Boot, and Spring Cloud, supporting high-volume, mission-critical financial applications.
Built secure and scalable RESTful and GraphQL APIs, implementing OAuth 2.0, JWT, and OpenID Connect with Spring Security to meet enterprise security and compliance standards.
Developed event-driven architectures using Apache Kafka and Spring Kafka for real-time data ingestion, transaction processing, and integration with downstream financial systems.
Implemented AWS Lambda–based serverless APIs and deployed applications on AWS using Docker and Kubernetes (EKS) to achieve horizontal scalability, fault tolerance, and cost optimization.
Designed and implemented data access layers using Hibernate/JPA, integrating with Oracle, MySQL, MongoDB, Cassandra, and DynamoDB to support both transactional and analytical workloads.
Developed responsive user interfaces using React.js and Angular, leveraging HTML5, CSS3, JavaScript, and TypeScript for seamless client-server communication and improved user experience.
Integrated AI/ML and Generative AI microservices, including LLM-based APIs, NLP pipelines, and AI-assisted fraud detection APIs, utilizing GitHub Copilot and AI-driven development practices to enhance productivity and decision intelligence.
Built and maintained automated CI/CD pipelines using Jenkins, GitHub Actions, Maven, and Gradle, enabling continuous integration, automated testing, and reliable deployments across environments.
Implemented enterprise-grade logging, monitoring, and observability using ELK Stack, Prometheus, and Grafana to ensure system reliability, performance optimization, and proactive incident resolution.
Collaborated with cross-functional teams in an Agile/Scrum environment, performing code reviews, writing unit and integration tests (JUnit, Mockito), and ensuring high-quality, secure, and maintainable code across the full SDLC.
Java Full Stack Developer T-Mobile, Frisco, Texas, USA Jan 2024 - May 2025
T-Mobile is a telecommunications company that provides wireless communication services, including mobile phone and internet services. Integrated with databases using JPA, Hibernate, Spring Data JPA, and Spring JDBC.
Responsibilities:
Migrated legacy monolithic applications to microservices architecture using Java, Spring Boot, and Spring WebFlux, exposing scalable and non-blocking REST APIs to support high-throughput telecom systems.
Designed and developed responsive Single Page Applications (SPA) using React.js, Angular, HTML5, CSS3, JavaScript, and Bootstrap, delivering high-performance, customer-facing web applications.
Implemented backend services using Java 8+, leveraging Collections, Generics, Multithreading, and functional programming features, with robust integration to Oracle databases using optimized SQL and PL/SQL.
Built and deployed containerized applications using Docker and orchestrated them with Kubernetes, including environment configuration, scaling, and deployment across cloud-based clusters.
Deployed and managed cloud-native applications on AWS using EKS, S3, and CloudWatch, implementing centralized logging and monitoring with Splunk to ensure system reliability and audit readiness.
Utilized Spring WebFlux and reactive programming to improve system responsiveness and support real-time data processing, integrating Redis for caching and performance optimization.
Collaborated with cross-functional teams in an Agile/Scrum environment, contributing to API integrations, UI enhancements, and end-to-end solution delivery while adhering to enterprise coding and performance standards.
Java Developer Steward Health Care, Dallas, Texas, USA Dec 2022 - Dec 2023
Steward Health Care is a large private for-profit health system. I design and develop responsive, dynamic web interfaces using HTML5, CSS3, Bootstrap, JavaScript, jQuery, ReactJS, and TypeScript.
Responsibilities:
Designed and developed HIPAA-compliant microservices using Java, Spring Boot, and Spring Security, implementing RBAC and secure data handling to protect PHI across healthcare applications.
Built and integrated healthcare APIs compliant with FHIR and HL7 standards, enabling secure and interoperable data exchange between clinical, billing, and patient-facing systems.
Developed and executed comprehensive unit and integration tests using JUnit, achieving high code coverage and ensuring application stability through continuous bug fixing and regression testing.
Implemented robust persistence layers using Hibernate/JPA and DAO patterns, integrating PostgreSQL, MongoDB, and AWS RDS, with optimized queries and transaction management using Spring AOP.
Collaborated in Agile/Scrum environments, utilizing Git, JIRA, JUnit, and Log4j, while contributing to UI development using React.js and supporting end-to-end delivery across the full SDLC
Software Engineer Edward Jones Investments, St. Louis, MO Feb 2020 –Nov 2022
Edward Jones Investments is a U.S.-based financial services firm providing investment management, financial advisory, and wealth planning solutions.
The company serves millions of clients through secure, technology-driven platforms and personalized financial strategies.
Designed and executed functional and integration testing for 20+ consumer-facing features, increasing defec.
Analyzed software requirements and system specifications to create 150+ structured test cases covering Android workflows and IoT data exchange scenarios.
Developed automated test scripts using Java and Python to validate JSON-based service responses, reducing manual regression testing effort by 40%.
Contributed to the development of test automation frameworks and mentored junior engineers on QA best practices, improving test coverage across three release cycles.
Performed Android device testing in Linux environments, validating application stability across 10+ device configurations and OS versions.
Executed and monitored CI/CD testing pipelines, identifying failed builds and reducing release defects by 28%.
Conducted Android Audio Framework testing at HAL and Kernel layers, identifying 18 low-level defects impacting system stability.
TECHNICAL SKILLS
Languages: Java 8/11/17, Python, SQL
Backend: Spring Boot, Spring Cloud, Spring MVC, Spring Security, Hibernate/JPA, Microservices
APIs: RESTful APIs, GraphQL, OAuth 2.0, JWT, OpenID Connect
Frontend: React.js, Angular, JavaScript, TypeScript, HTML5, CSS3
Databases: Oracle, MySQL, SQL Server, MongoDB, Cassandra, DynamoDB
Messaging: Apache Kafka, Spring Kafka, JMS
Cloud & DevOps: AWS, Azure, Docker, Kubernetes (EKS/AKS), CI/CD Pipelines
CI/CD & Tools: Jenkins, GitHub Actions, Maven, Gradle, Git
AI & GenAI: GitHub Copilot, LLMs, NLP, Generative AI, AI Fraud Detection APIs
Monitoring: ELK Stack, Prometheus, Grafana
EDUCATION
●Bachelor of Applied Science in Information Technology, University of the Cumberlands (2022-2023)
●Associate of Science, Santa Ana College (2015-2019)
VAN NGUYEN DIEU HOANG
Java Full Stack Developer
Dallas, TX
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