Java Developer Senior
Resume:
EDWIN SALAZAR
Senior Java Developer
+1-915-***-**** *****.*******.******@*****.*** linkedin.com/in/edwin-salazar-67a806356/ Houston,TX SUMMARY
Experienced Senior Java Developer with 12+ years building secure, scalable backend systems using Java, Spring, and cloud-native technologies across industries like healthcare, finance, and cybersecurity. I’m passionate about clean code, team collaboration, and delivering solutions that are both technically sound and impactful. EXPERIENCE
10/2020 - 03/2025
Costa Mesa, CA
Senior Java Developer
Experian
Deployed the design and development of scalable Java-based backend services using Spring Boot and Spring MVC, ensuring high availability and performance for enterprise-grade financial systems. Led the migration of monolithic applications to a modern microservices architecture, improving system modularity, deployment agility, and fault isolation. Designed and implemented secure RESTful APIs using Spring Security (OAuth2, JWT) for authentication and authorization, protecting sensitive financial data. Delivered responsive, high-performance user interfaces using Angular, collaborating closely with UX teams to transform complex business requirements into intuitive dashboards and workflows. Applied multithreading and asynchronous processing to optimize backend performance, reducing latency and increasing transaction throughput.
Achieved over 90% unit test coverage using JUnit and Mockito, while also implementing integration tests to ensure consistent functionality across microservices. Optimized SQL and NoSQL database interactions (PostgreSQL, MongoDB), reducing query response times by up to 30% through query tuning and efficient ORM usage. Automated CI/CD pipelines with Jenkins, Docker, and Kubernetes, enabling continuous integration and zero- downtime deployments in production environments.
Mentored junior developers on Java backend and Angular frontend best practices, fostering a culture of code quality, peer learning, and Agile development. Actively participated in Agile ceremonies, including sprint planning, retrospectives, and code reviews, ensuring on-time and high-quality delivery of features. 08/2018 - 08/2020
Visalia, CA
Senior Back End Java Developer
Cigna Health Benefits
Designed and developed scalable backend services using Java, Spring Boot, JPA, and Hibernate to securely process critical patient and clinical data in production healthcare systems. Built and maintained robust RESTful and GraphQL APIs that powered dynamic React applications and facilitated seamless integration with third-party services. Engineered complex relational data models and optimized SQL queries for PostgreSQL and MySQL, significantly improving data retrieval speeds and system consistency. Integrated React with Redux for modular, high-performance UI modules that enabled real-time insights and user-friendly healthcare dashboards.
Automated backend workflows and data transformation pipelines using Java and Python, enhancing data accuracy and reducing manual processing time.
Deployed containerized Java microservices to AWS and GCP using Docker, ECS, EC2, and Cloud Functions, ensuring high availability and scalability.
Developed automated backend workflows and data transformation scripts using Java and Python, streamlining medical data processing pipelines.
Implemented CI/CD pipelines with Jenkins and Kubernetes, reducing release times and increasing deployment reliability across environments.
Leveraged Elasticsearch and Kibana for real-time monitoring of patient data trends and system health, enabling faster diagnostics and incident response.
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EXPERIENCE
09/2017 - 07/2018
Jacksonville, FL
Backend Java Developer
Nymbus
Designed and implemented scalable backend solutions with Java EE and Spring Boot for real-world microservice projects, ensuring high performance, maintainability, and security. Developed and integrated RESTful APIs to support dynamic, data-driven user interfaces with Angular, enhancing frontend-backend communication and user experience. Secured applications by implementing authentication and authorization using Spring Security and JWT, adhering to industry best practices for access control. Optimized PostgreSQL and Redis databases through advanced indexing, query tuning, and efficient schema design, significantly improving data retrieval speed and system responsiveness. Leveraged JPA/Hibernate for reliable data persistence, managing complex entity relationships, lazy loading, and transaction consistency across multiple projects. Automated CI/CD pipelines with Jenkins and Git, streamlining build, test, and deployment processes to accelerate delivery and minimize production issues. Deployed and managed cloud applications on AWS (EC2, S3, RDS), ensuring high availability and scalable infrastructure aligned with project demands.
Applied TDD and BDD methodologies using JUnit, Mockito, and Selenium, fostering robust test coverage and continuous quality improvement within Agile teams. 01/2013 - 05/2017
Dallas, TX
Java Developer
Plasma
Delivered robust, scalable web applications using Java Spring Boot and React, successfully addressing complex business requirements in fast-paced environments. Led the migration of legacy Angular applications to React, enhancing UI responsiveness, maintainability, and user engagement across multiple key modules.
Developed and secured RESTful APIs with Spring Boot, enabling efficient data exchange and integration between distributed microservices.
Optimized backend database operations using MySQL, PostgreSQL, and MongoDB, improving query performance and ensuring data integrity in healthcare-critical systems. Integrated asynchronous messaging platforms such as RabbitMQ and Kafka to support real-time data streaming and event-driven workflows.
Automated CI/CD pipelines with Jenkins and GitHub Actions, accelerating release velocity while maintaining high software quality standards.
Employed containerization with Docker and Kubernetes orchestration to streamline deployments, support scaling strategies, and simplify environment management. Mentored junior developers in React and Java best practices, fostering team collaboration and contributing to collective technical growth.
SKILLS
Java (8/11/17/21) Spring Boot Spring MVC Spring Security J2EE JPA Hibernate RESTful APIs Microservices JavaScript TypeScript Angular React.js Redux HTML5 CSS3 SASS/LESS SQL MySQL PostgreSQL MongoDB Apache Kafka RabbitMQ AWS (EC2, Lambda, S3, RDS, SQS) Docker Kubernetes Jenkins Git (GitHub, GitLab) Maven Gradle JUnit Mockito Selenium OAuth 2.0 JWT OWASP Agile/Scrum CI/CD Pipelines Terraform ELK Stack gRPC Apache Camel ActiveMQ Grafana CloudFormation GCP App Engine Google Cloud Function Firestore Pub/Sub EDUCATION
02/2008 - 07/2012
Lubbock, TX
Bachelor of Science in Computer Science
Texas Tech University
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