Vinaykumar Chamanthi

Senior Java Full Stack Developer with 7+ years of experience across the complete Software Development Life Cycle, including requirements analysis, design, development, testing, deployment, production support, and maintenance of enterprise applications using Java/J2EE and modern web technologies. Strong hands-on experience with Java 8/11/17/21, including Lambda Expressions, Stream API, Functional Interfaces, Optional, Records, Switch Expressions, Pattern Matching, Sealed Classes, and Text Blocks for developing clean, scalable, and maintainable applications. Extensive experience with Spring Boot 3.x, Spring MVC, Spring Security, Spring Data JPA, Spring Cloud, Spring REST, Spring AOP, Spring IoC, Spring JDBC, Hibernate, and Microservices architecture.

Proven experience designing and developing secure, scalable RESTful APIs using OAuth 2.0, JWT, role-based access control, API versioning, Swagger/OpenAPI, validation, exception handling, and HATEOAS principles. Experienced in modernizing monolithic applications into independently deployable Microservices using Spring Boot, Spring Cloud, Eureka, API Gateway, Resilience4j, client-side load balancing, and containerized deployments. Proficient in event-driven and asynchronous architecture using Apache Kafka and JMS, including producer-consumer workflows, retry mechanisms, offset management, dead-letter handling, and fault-tolerant message processing.

Strong database experience with Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Cassandra, Redis, DynamoDB, and Couchbase, including SQL tuning, stored procedures, functions, views, triggers, packages, indexing, transaction management, and ORM performance optimization. Hands-on experience with AWS services including EC2, S3, Lambda, RDS, SQS, SNS, DynamoDB, IAM, API Gateway, Route 53, and CloudWatch for developing and supporting scalable cloud-native applications. Experienced in responsive frontend development using Angular 17+, React 18, TypeScript, RxJS, Angular Material, JavaScript ES6+, HTML5, CSS3, Bootstrap, and component-based architecture.

Proficient in containerization, CI/CD, and infrastructure automation using Docker, Kubernetes, Helm, Terraform, Jenkins, GitHub Actions, GitLab CI/CD, and ArgoCD. Experienced in application monitoring, logging, and observability using SLF4J, Logback, Spring Boot Actuator, ELK Stack, Prometheus, Grafana, CloudWatch, and SonarQube. Strong experience with automated testing using JUnit 5, Mockito, REST Assured, Selenium, Cucumber, Cypress, Playwright, TestNG, Karma, and Jasmine for unit, integration, API, regression, and UI testing.

Hands-on experience with Python and Shell scripting for automation, API integration, deployment support, data processing, log analysis, health checks, and operational utilities. Familiar with Generative AI and AI-assisted software development tools including GitHub Copilot, ChatGPT, Amazon Q Developer, prompt engineering, LLM API integration, and AI-assisted code generation, debugging, docume

Senior Java Full Stack Developer at Bremer Bank (2023-11 – Present)

• Designed and developed scalable banking applications using Java 17/21, Spring Boot 3.x, Spring MVC, Spring Data JPA, Hibernate, and Microservices architecture.
• Developed secure RESTful APIs using Spring Security, OAuth 2.0, JWT, role-based access control, API versioning, validation, exception handling, and Swagger/OpenAPI.
• Built cloud-ready Microservices using Spring Cloud, API Gateway, service discovery, centralized configuration, load balancing, and Resilience4j-based retry, circuit breaker, timeout, and fallback patterns.
• Implemented event-driven workflows using Apache Kafka, including producers, consumers, consumer groups, partitions, retry topics, dead-letter topics, offset management, and idempotent processing.
• Leveraged Java 17/21 features including Records, Sealed Classes, Pattern Matching, Streams, Optional, Switch Expressions, Text Blocks, and CompletableFuture.
• Built responsive frontend components using Angular 17, TypeScript, RxJS, Angular Material, React 18, HTML5, CSS3, and Bootstrap.
• Integrated internal Microservices and third-party systems using REST APIs, JSON, OpenFeign, WebClient, and asynchronous communication patterns.
• Designed persistence layers using Spring Data JPA, Hibernate, JDBC, Oracle, PostgreSQL, MySQL, MongoDB, and Redis, including transaction management, indexing, query tuning, pagination, and caching.
• Containerized applications using Docker and deployed Microservices to Kubernetes using Deployments, Services, ConfigMaps, Secrets, autoscaling, and rolling updates.
• Automated build, testing, code-quality checks, image creation, and deployment using Maven, Jenkins, GitHub Actions, GitLab CI/CD, Helm, Terraform, and ArgoCD.
• Utilized AWS services including EC2, S3, Lambda, RDS, DynamoDB, SQS, SNS, IAM, API Gateway, CloudWatch, and Route 53.
• Developed unit, integration, and API tests using JUnit 5, Mockito, MockMvc, REST Assured, and Testcontainers, and monitored applications using Spring Boot Actuator, ELK, Prometheus, Grafana, and SonarQube.
• Used GitHub Copilot, ChatGPT, and Amazon Q Developer for code suggestions, debugging, unit-test generation, refactoring, documentation, and code-review support.
• Participated in requirements analysis, technical design, sprint planning, code reviews, release coordination, production support, and root-cause analysis in Agile/Scrum teams.

Java Full Stack Developer at Quantum Health (2021-08 – 2023-10)

• Developed and maintained scalable healthcare applications using Java 8/11/17, Spring Boot, Spring MVC, Spring Data JPA, Hibernate, and Microservices architecture to support high-volume API requests and business transactions.
• Designed and implemented RESTful APIs and independently deployable Microservices using Spring Boot and Spring Cloud, enabling secure and loosely coupled communication across enterprise systems.
• Leveraged Java features including Lambda Expressions, Stream API, Functional Interfaces, Optional, Collections, and multithreading to improve code readability, processing efficiency, and maintainability.
• Implemented application security using Spring Security, role-based access control, authentication, authorization, and secure API-access mechanisms for sensitive healthcare information.
• Developed business service layers using Spring Boot and JTA transaction management to support distributed transactions, workflow orchestration, and reliable data processing.
• Used Spring Data JPA and Hibernate for entity mapping, repository development, transaction management, lazy-loading optimization, and efficient database operations.
• Developed business-rule validation workflows using Drools Rule Engine and ILOG to automate enterprise decision-making and complex healthcare processing rules.
• Wrote and optimized SQL queries, PL/SQL procedures, functions, triggers, and stored procedures across Oracle, MySQL, SQL Server, and DB2 databases.
• Built responsive and cross-browser-compatible user interfaces using JavaScript, HTML5, CSS3, CSS Grid, AJAX, and event-delegation techniques.
• Deployed and supported cloud-native applications using AWS EC2, S3, RDS, DynamoDB, SQS, IAM, ELB, CloudWatch, and CloudFormation.