Senior Full-Stack Java Developer with Cloud & AI Focus

RUBESH PHAIJU

United States *********@*****.*** 682-***-****

PROFESSIONAL SUMMARY:

Full Stack Java Developer with 7+ years of end-to-end experience in designing, developing, and deploying enterprise-grade applications using Java, Spring Boot, Angular, and React across multiple domains to support Migration, Modernization, and New Product Development (R&D) projects. Skilled in building event-driven systems utilizing Kafka, Docker, and Kubernetes, and integrating databases like PostgreSQL, MongoDB, Oracle, MySQL, Db2, and other NoSQL solutions. Experienced in cloud-native deployments across AWS, Azure, and GCP, with CI/CD automation using Jenkins and container orchestration on JBoss and Tomcat. Proficient in TypeScript and Node.js for backend and full-stack development. Adept at designing RESTful APIs, implementing HIPAA-compliant solutions, and writing complex PL/SQL logic. Skilled in using AI tools, GitHub Copilot, and modern AI libraries to optimize productivity and workflow automation. Collaborative team player experienced in Agile, Maven, Gradle, and JUnit environments. Technical Skills

Languages: Java (8/11/17/21), JavaScript, TypeScript, Python, Shell Scripting Frameworks: Spring Boot, Spring MVC, Hibernate, JPA, WebFlux, Spring Batch, Micronaut, Quarkus, Vert.x Frontend: Angular (11/14), React.js, HTML5, CSS3, Bootstrap, Material UI, RxJS, NgRx Cloud & DevOps: AWS (Lambda, S3, SQS, SNS, RDS, API Gateway, ECS, Cognito), Azure, GCP, Kubernetes, Docker, Terraform, Helm, Jenkins, GitHub Actions, ArgoCD, AWS CDK AI & Automation: OpenTelemetry, AI-powered monitoring (Datadog, Prometheus), automated CI/CD, predictive analytics for scaling, Chaos Engineering (Gremlin, Chaos Monkey) Messaging & Streaming: Apache Kafka, RabbitMQ, Redis Streams, AWS Kinesis, ActiveMQ, Pulsar, NATS APIs & Security: REST, GraphQL, WebSockets, gRPC, JWT, OAuth2, OIDC, API Gateway, WAF, mTLS Databases: PostgreSQL, MySQL, DynamoDB, MongoDB, Redis, Cassandra, CockroachDB, Neo4j Monitoring & Logging: ELK Stack, OpenTelemetry, Micrometer, Prometheus, Grafana, Datadog, Splunk Testing & Tools: JUnit, Mockito, TestContainers, Rest Assured, JMeter, Selenium, Postman, SonarQube, Pact, Cucumber, Cypress, Gatling, JIRA Chaos Monkey, SOAP UI, Jenkins PROFESSIONAL EXPERIENCE

Deloitte - Mechanicsburg, PA Oct 2023 - Present

AI and Cloud Software Engineer

Responsibilities:

● Designed and developed cloud-based backend services using Java 17 and Spring Boot to support transportation data processing, workflow orchestration, and form management systems.

● Built REST APIs and asynchronous processing components to handle large volumes of structured and unstructured data across distributed services.

● Implemented Kafka-based messaging for event-driven communication, managing topics, partitions, consumer groups, and offset handling.

● Integrated AI-enabled services into backend workflows by consuming model inference endpoints and processing results within Java microservices.

● Developed batch processing jobs using Spring Batch to support scheduled data ingestion, validation, and reporting pipelines.

● Implemented role-based access control using Spring Security to protect APIs and internal service endpoints.

● Designed and optimized data access layers using Hibernate and JPA with PostgreSQL for transactional and analytical workloads.

● Built frontend components using Angular 14 and Vue.js to deliver dashboards, validation workflows, and case tracking features.

● Containerized applications using Docker and deployed services on Kubernetes with environment-specific configuration management.

● Configured cloud infrastructure on AWS to support application hosting, storage, logging, and monitoring requirements.

● Monitored cloud services and AI-related workloads using Grafana dashboards backed by CloudWatch metrics.

● Developed Python scripts to automate data preparation, log analysis, and operational support tasks.

● Implemented unit and integration tests using JUnit and Mockito to validate business logic and service interactions.

● Collaborated with data, QA, and infrastructure teams to support production releases and resolve application issues.

● Documented system architecture, API contracts, and operational procedures to support long-term maintenance. AT&T- Dallas, TX Nov 2021- Sep 2023

Full Stack Java Developer

Responsibilities:

● Developed full-stack applications using Java 11 and Spring Boot for backend services and React for frontend user interfaces.

● Built RESTful APIs using Spring Boot and Spring MVC to support customer-facing and internal business workflows.

● Implemented batch and scheduled processing using Spring Boot and Spring JDBC for data synchronization and reporting tasks.

● Migrated legacy applications from Java 8 to Java 11, refactoring deprecated APIs and improving stream-based data processing.

● Designed and implemented microservices following domain-based service boundaries and stateless service patterns.

● Developed event-driven services using Apache Kafka, implementing producers, consumers, and consumer groups for asynchronous processing.

● Designed data persistence layers using Hibernate and JPA with PostgreSQL and MongoDB for transactional and document-based storage.

● Secured backend services using Spring Security and JWT-based authentication and authorization.

● Containerized Java and Python services using Docker and deployed applications across Kubernetes environments.

● Built frontend components using React, JavaScript, HTML, and CSS to support responsive and modular UI development.

● Integrated backend services with legacy systems using REST APIs with proper request validation and error handling.

● Deployed applications to AWS Elastic Beanstalk and GCP Compute Engine as part of hybrid cloud deployments.

● Developed AWS Lambda and GCP Cloud Functions integrated with object storage for event-driven processing tasks.

● Used Git for version control, managing feature branches, pull requests, and code reviews.

● Collaborated with QA, frontend, and platform teams to support releases, troubleshoot issues, and maintain application stability.

TBK Bank- Dallas, TX May 2020- October 2021

Full Stack Developer

Responsibilities:

● Built and deployed Spring Boot microservices in Java 8, integrating REST APIs with Oracle and MongoDB, and secured them using JWT and Spring Security.

● Built multithreaded Java utilities using Java Collections, the concurrent package, and generics to handle asynchronous data processing and report generation tasks.

● Collaborated with business analysts and PMs to gather requirements and convert them into UML diagrams as part of a Java-based case management system.

● Proficient in using ReactJS for creating reusable components along with sliders, charts, grids, and handling events and DOM objects.

● Implemented reusable frontend templates using HTML, JavaScript, jQuery, and CSS, supporting multi-screen workflows and responsive design.

● Set up Jenkins pipelines with Maven builds and Docker images, pushing updates to AWS-hosted Kubernetes clusters via Helm charts.

● Integrated Corticon rules engine with Spring services, setting up business logic flows and decision automation.

● Wrote complex SQL queries and stored procedures, built JDBC-based connectors to interact with Oracle and MySQL, and ensured data consistency across modules.

● Wrote shell scripts for deployment automation on UNIX, and managed JBOSS server configurations for on-premises components.

● Automated deployment pipelines using GCP Cloud Build and Cloud Deploy, supporting rapid delivery for Java microservices across dev and QA environments.

● Used GitHub's CoPilot to develop high-quality code and automate manual coding tasks, using its advanced AI-powered coding capabilities.

Methodist Health System- Dallas, TX August 2018– April 2020 Java Developer

Responsibilities:

● Participated in requirements gathering, translated business needs into use cases, and contributed to application framework design using Agile and Test-Driven Development (TDD) practices.

● Built dynamic and user-friendly interfaces using HTML, CSS, JavaScript/jQuery, Vue.js, and Angular, alongside Struts MVC and Struts Tiles for structured layout design.

● Designed and developed RESTful APIs with Spring REST, consumed services using RestTemplate, and also implemented SOAP-based web services using Metro JAX-WS RI.

● Migrated legacy DAO-based persistence layers to Spring and Hibernate, using Spring Core Annotations, Spring MVC, and Spring Boot to develop modular microservices.

● Implemented TypeScript-based solutions for complex development challenges, including code refactoring, debugging, and testing.

● Worked with security/compliance requirements (e.g., SOC2, HIPAA) to ensure secure and compliant systems.

● Used Hibernate for ORM and connected to Oracle 10g for DAO operations, while also crafting custom SQL queries, stored procedures, and triggers in MySQL.

● Developed full-stack modules using Java, Spring, Hibernate, and Node.js, ensuring consistent backend logic and seamless frontend-backend interaction.

● Set up CI/CD pipelines using CodePipeline, CodeBuild, Jenkins, and Maven to reduce release cycles and support zero-downtime deployments.

● Managed CI/CD pipelines and automated testing using Azure DevOps and AWS CodePipeline, ensuring reliable, high-availability delivery.

EDUCATION

Master’s in information technology, University Of The Cumberlands, Williamsburg, KY CERTIFICATIONS

• AWS Certified Developer, Associate (Amazon Web Services)

• Generative AI with Large Language Models, DeepLearning.AI & AWS (Coursera)

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