Full Stack Java Developer with Cloud and AI Experience

Yeswanth Vajja

Mckinney, TX +1-206-***-**** ********@*******.*** https://www.linkedin.com/in/vyesh/

Summary:

Full Stack Java Developer with over 6 years of hands-on experience in designing, developing, and deploying large-scale enterprise applications using Java 8/11, Spring Boot, Microservices, and ReactJS.

Strong expertise in Spring Framework (Core, Boot, MVC, Security, Cloud, Batch) and Hibernate ORM, delivering efficient, modular, and scalable backend solutions.

Experienced in frontend development using ReactJS, Angular, JavaScript (ES6+), HTML5, CSS3, Bootstrap, and TypeScript, creating responsive and user-centric interfaces.

Adept in cloud-native architectures and deployments using AWS, Docker, Kubernetes, and Terraform, with focus on automation through CI/CD pipelines (Jenkins, GitHub Actions).

Hands on experience LLM-powered chat assistants, natural language search, RAG pipelines with vector stores for context-aware answers; model integration via secure APIs; prompt/guardrails, fine-tuning and embeddings.

Skilled in building secure systems with OAuth2, JWT, and Spring Security, and developing APIs leveraging REST, GraphQL, and Kafka messaging systems.

Collaborative Agile team member with experience in Scrum ceremonies, TDD, peer reviews, and mentoring, ensuring maintainable code and continuous delivery.

Certification:

Oracle Cloud Certified Developer Professional

Oracle Cloud Certified DevOps Professional

Oracle Cloud Certified AI Foundations Associate

Program and bootcamp trainingS:

Xplora IT Labs Pvt. Ltd. Full Stack Java Developer Bootcamp Sept 2018 – July 2019 Hyderabad, India

Completed an intensive Full Stack Java Developer Bootcamp, mastering Core Java, Spring Boot, Hibernate, ReactJS, and RESTful APIs.

Built and deployed small-scale microservice-based applications, integrating Spring Boot backends with Bootstrap-based front-ends.

Practiced version control and CI/CD fundamentals using Git, Maven, and AWS Free Tier environments for testing.

Worked in Agile sprints, performing unit testing with JUnit, and participating in team-based projects simulating live industry workflows.

Education:

Master of Science in Computer Science – Wayne State University, May 2024

Bachelor of Technology in Electronic Engineering – Vellore Institute of Technology, May 2019

Technical Skills:

Languages & Technologies: Java, Spring Boot, Python, JUnit, Apache Kafka, RESTful APIs

Cloud & Databases: Docker, Kubernetes, GraphQL, DynamoDB, SQL, MySQL, AWS, NoSQL (MongoDB)

Web Development: CSS, HTML, ReactJS, NodeJS, JavaScript, Angular

Cloud Platforms: Azure, AWS (EC2, S3, RDS), OpenShift

J2EE Technologies: Servlets, Struts, EJB, JSF, JDBC, JNDI, JMS, JTA, Micro Profile, Helidon, Quarkus

Web Services: REST, SOAP, GraphQL, gRPC, Swagger, Async API

Frameworks: Spring (Core, Boot, MVC, Batch, Security, Cloud, Data JPA), Hibernate, Micronaut

AI & GenAI: LLMs, RAG, LangChain, vector stores (Pinecone), fine-tuning (LoRA/QLoRA), OpenAI API.

DevOps & Version Control: CI/CD using Jenkins, GitHub Actions, Docker, Kubernetes, Git, GitBash, Harvest, SVN

Work Experience:

Subaru of America

Full Stack Java Developer Jun 2023 – Present

Designed and implemented Spring Boot microservices to process vehicle telemetry data, enabling real-time analytics for dealerships and service centers.

Built RESTful and GraphQL APIs for customer data synchronization between vehicle systems and marketing platforms.

Developed ReactJS dashboards with TypeScript and Bootstrap to visualize telemetry insights for end users.

Built a RAG-based diagnostics tool using an LLM with vector search over telemetry, service bulletins, and repair manuals and parts recommendations directly in the React dashboard with secure API hooks.

Migrated critical modules to AWS Cloud using EC2 and RDS, with deployments automated through Docker and Kubernetes.

Implemented Spring Security with OAuth2 and JWT for securing microservices communication and access control.

Optimized database performance with advanced SQL tuning, connection pooling, including pagination, indexing, and query profiling to reduce latency under high load.

Integrated Kafka-based event-driven messaging for high-throughput data streaming between microservices.

Set up observability with centralized logging, metrics, and tracing using ELK, Prometheus, Grafana, and to speed root cause analysis and improve performance.

Automated builds and multi-environment deployments using Jenkins pipelines and GitHub Actions, improving CI/CD efficiency.

Designed Swagger documentation and JUnit test suites to enhance maintainability and service reliability.

Collaborated with architects to optimize existing APIs for scalability and system resilience under high load.

Participated in Agile sprints, contributing to planning, estimation, peer code reviews, and sprint retrospectives.

Environment: Java 8/11, Spring Boot, Spring Cloud, Spring Security, Hibernate, Kafka, GraphQL, ReactJS, TypeScript, Bootstrap, AWS (EC2, S3, RDS, EKS), Docker, Kubernetes, Jenkins, GitHub Actions, PostgreSQL, Terraform, Agile, JUnit.

Swiss Re

Software Developer Aug 2018 – Jul 2022

Engineered and supported microservice-based reinsurance management systems using Spring Boot, Hibernate, and REST APIs.

Developed ReactJS and Angular-based UIs to streamline policy handling, claims processing, and risk analytics for global clients.

Built secure data integration pipelines using Spring Batch and Spring Security, ensuring consistent and compliant data flow.

Enhanced system performance by optimizing SQL queries, stored procedures, and database indexing strategies.

Implemented event-driven policy and claims workflows with AWS SNS/SQS and Redis caching for faster responses and DLQs/retry policies to improve resilience and reducing latency across microservices.

Implemented GraphQL APIs for flexible data retrieval and real-time insights for reinsurance operations.

Coordinated with QA and DevOps teams for load testing, regression validation, and performance tuning via JMeter.

Automated data validation and reporting tasks using Spring Batch with integrated email notifications.

Deployed microservices on AWS Elastic Beanstalk and S3, leveraging CI/CD through Jenkins and Dockerized containers.

Deployed and managed microservices on Kubernetes using Helm with autoscaling and health checks.

Collaborated on UI standardization by creating reusable React components and integrating accessibility features.

Followed Agile methodology with bi-weekly sprint reviews, retrospectives, and continuous feedback loops.

Environment: Java 8, Spring Boot, Spring MVC, Spring Batch, Hibernate, ReactJS, Angular 8, GraphQL, AWS (Elastic Beanstalk, S3), Docker, Jenkins, Git, JIRA, JMeter, PostgreSQL, MySQL, MongoDB, REST APIs, OAuth2, Agile Scrum.

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