Vamshi Krishna Nunna

I have designed and developed robust, scalable, and modular software infrastructures to support critical business operations. Leveraging Java and Spring Boot, I create API-centric systems that streamline pilot training, FAA compliance, and scheduling processes. I ensure my solutions meet business requirements for functionality, scalability, and performance. I automate continuous integration and deployment processes using GitLab pipelines to improve efficiency and delivery speed. On the front-end, I develop user interfaces with React Native to provide seamless and intuitive experiences for internal users. Additionally, I manage deployments on AWS, using Kubernetes to orchestrate Docker containers for optimized scalability and resource management. I also configure AWS CloudWatch alarms to proactively monitor system performance and ensure high availability and reliability.

I designed, developed, and maintained B2C applications that supported both paid and free subscriptions, along with add-ons like continuous navigation, offer management, and subscription payment processes. I played a key role in technical planning and requirements gathering, contributing to all phases of the software development lifecycle, including design, coding, testing, troubleshooting, and documentation. I built microservices-based applications using Java 8, Spring Framework, and IntelliJ IDE, creating Spring Boot REST APIs that were tested with Postman. I implemented web security with Spring Security and OAuth 2.0, while ensuring code quality through unit and integration tests using JUnit, Mockito, and MockMvc. Using RabbitMQ for an Event-Driven Architecture, I developed and deployed cloud-based applications on Pivotal Cloud Foundry. Following Test-Driven Development practices, I enhanced application reliability and performance by integrating Redis for caching. I utilized CI/CD pipelines with Concourse for continuous integration and deployment and configured proactive application monitoring with Splunk and Dynatrace. Additionally, I followed Agile methodologies, actively engaging in iteration planning, daily stand-ups, and retrospectives to ensure efficient and timely delivery.

I migrated legacy systems to a Pivotal cloud platform, using domain-driven design to build a Cassandra database supporting system needs. I worked with PII data integrated with credit card and rewards systems, implementing scalable RESTful web services and configuring time-based auto-scaling. I integrated Cassandra with Spring Boot for data integrity and used Apache Kafka for inter-service communication and streaming. I onboarded services to an API Gateway, implemented fault tolerance with Spring Cloud Hystrix, and used Blue-Green deployment for zero-downtime releases. Additionally, I automated CI/CD pipelines, deployed containerized microservices with Docker, and monitored systems with Splunk and Dynatrace, ensuring high performance and scalability.

I delivered software solutions to clients like CSX Transportation and Costco. For CSX, I built a new user interface from the ground up using AngularJS to display fleet metrics, along with developing the necessary API integrations. At Costco, I migrated a legacy on-premise system to the cloud and created sequential and conditional batch jobs using the Spring Batch framework. I designed high-performance jobs using multithreading and range partitioning, and developed REST APIs with Spring Boot.