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Divya - Jr. Java developer

[email protected]

Location: San Jose, California, USA

Relocation: Yes

Visa: Stem OPT

Divay sri Medarametla 508-535-2503// Ext 102 | [email protected] | Full Stack Java Developer PROFESSIONAL SUMMARY Having 7 years of experience as a Full Stack Java developer in developing web-based client server applications, data solutions, Intranet/Internet Enterprise Software applications Experience in developing J2EE components on Application Servers and Web servers like MicroServices, Open Shift, Web Sphere, Web Logic and Apache Tomcat. Having Sound Knowledge in RDBMS, SQL and NOSQL databases (MONGODB), Spark and Open Sources (Apache Couch DB) and the Storage Systems (Hadoop Distributing File System (HDFS) Experience in applying JMS (Java Messaging Service) MicroServices, No SQL for reliable information exchange across Java 17 applications. Extensive experience of designing and developing software applications with the EJB, Java, JSP, Servlets, Java Beans, JNDI, AJAX, JMS, ORM, JNDI, Web Services (SOAP, REST), JDBC, JAXP, Node JS, Spark, RMI, XML, JavaScript, JQuery, CSS, JSON. Experience in Python Open Stack API'S, MicroServices and Scaling up projects using python tools like multithreading, celery using Spring Core Annotations for Dependency Injection Spring Boot for REST API s and Spring Boot for MicroServices. Experience in developing J2EE based Web Services to expose useful functionality to web users through SOAP, describing them using WSDL, registering them using UDDI, Node JS, Spark for easy availability to potential users and consuming using Axis2 and JAX-WS. Implement a recursive algorithm to parse large GraphQL introspection queries into a dotfile format in order to visualize the one-to-many relations between schemas in an SVG format. Strong knowledge of Cloud application security models, protocols and tools like AWS IAM, AWS KMS policy, Microsoft Azure AD, Google Cloud Platform (GCP), AWS Advanced, Spark the services utilizing the Pivotal Cloud Foundry (PCF) as a platform as a service for Restful services. Strong knowledge of Google Cloud Platform (GCP) application security models, protocols and tools like AWS IAM, AWS KMS policy, Microsoft Azure AD, Google Cloud Platform (GCP) Working on Deployment Automation of all MicroServices, Spring Boot to pull image from Private Docker, Spark registry and deploy to Kubernetes Cluster. Explored the experimental Project Loom features in Java 17, such as virtual threads and structured concurrency, to improve concurrent programming. Using Apache Kafka, Rabbit MQ, Active MQ and IBM MQ, Cassandra Spring Boot to communicate from Client to Server. Expertise in HTML5/CSS3 developing and having experience in JS Framework, AWS Advanced, Responsive design implementing Continuous Integration and Continuous Delivery (CI/CD) Process stack using DevOps tools like concourse. Proficient in Java 17 Designing Patterns including singleton, Factory, Model View Controller (MVC) and Data Access Object (DAO) experience in a quick paced Agile Developing Environment including (TDD) Test Drive Development Spark and Scrum. Having good knowledge on different databases, Node JS like Posture SQL, MySQL, DB2, Oracle, Spark, Microsoft SQL Server, NoSQL DB (Raven DB, MONGODB and Cassandra, Couch DB, Radis. Extensive experience in MicroServices, AWS Advanced cloud architecture in AWS (EC2, S3, EBS, Cloud watch, load Balancer) in developing user interfaces with Angular 12/8, HTML, CSS, JSTL, Spark and Custom Tag Libraries. Expertise in Azure, Spark, Cassandra infrastructure management (Azure Web Roles, Worker Roles, SQL Azure, Azure Storage, Azure AD Licenses). Worked on Google cloud platform (GCP) services like compute engine, cloud load balancing, cloud storage, cloud SQL, stack driver monitoring and cloud deployment manager. Having Technology leadership for the direction of the Web-based application using Spring framework, MVC pattern, Spark, and Web Sphere Server integrating to a proprietary framework. Experience in working with databases such as Oracle, MS-SQL Server, AWS Advanced, MySQL, Node JS and using PL/SQL, Cassandra to write storing procedures, functions and Triggers for different Data Models. Experience in Configuration Management, setting up company Version policies, build schedule using SVN, Spark, Bit Bucket, No SQL Spring Boot and Node JS, Spark Git. SKILLS SET Languages Java 17, Java 11, Java 8, J2EE, SQL, Python, PL/SQL, UML, C, C++ Enterprise Java Servlets, JSTL, Design Patterns, JSF, JMS, JSP, JNDI, JDBC, Log4J API, Java security Mark-up/XML Technologies HTML, XHTML, JavaScript, CSS, XML, XSD, XSL/XSLT, AJAX, Node JS, React JS, jQuery, JSON, Bootstrap, Angular 12/8, Angular JS Tools & Framework Spring 4/5, Spring MVC, Spring Boot, Spring batch, Spring Security, Spring AOP, Struts, JSF, Log4J, Jasper reports Web Services SOAP, REST, REST API, WSDL Web/App Servers Web Sphere, Web Logic, Apache Tomcat, Apache Kafka, JBoss, Jetty Server Database Oracle, MONGODB, No SQL, MySQL server Development Tools Eclipse, My Eclipse, Spring Tool Suite STS O-R mapping Hibernate, JPA AWS EC2, RDS, S3, ELB, EBS Version Control Tools Source Tree, Git, Bit bucket, Tortoise SVN Built Tools J Unit, Soap UI, ANT, MAVEN, Gradle, Putty, CI/CD, PCF, Google Cloud Platform (GCP), Rational Clear Quest, Azure, Miskito, Fitness, Kubernetes, Load UI, Groovy Spock, Docker, Jenkins OS & Environment Windows, Linux, UNIX Design Patterns MVC, Front Controller, Singleton, Business Delegate and DAO patterns PROFESSIONAL EXPERIENCE Walmart, Sunnyvale Senior Java Developer May 2025 Present Accomplishments: Designed and developed Java 17 backend microservices using Spring Boot, applying functional programming concepts (Streams, Lambdas, Optional) to build scalable, high-throughput services. Built event-driven data platforms leveraging Apache Kafka and Google BigQuery to support near real-time ingestion, transformation, and analytics of large-scale retail datasets. Implemented Java-based BigQuery integrations using Google Cloud libraries to execute complex analytical queries, manage datasets, partitions, and clustered tables. Developed backend services to process, cleanse, and enrich streaming data, consuming Kafka topics and publishing curated datasets into BigQuery. Designed BigQuery-optimized data models using denormalized schemas, partitioning, and clustering to improve query performance and cost efficiency. Exposed RESTful APIs using Spring Boot to deliver BigQuery-backed metrics, aggregations, and reporting services to downstream applications. Modernized legacy systems by migrating monolithic applications to microservices, decoupling analytics workloads and improving scalability and resiliency. Implemented fault-tolerant asynchronous processing with retries, dead-letter topics, and idempotent consumers to ensure data consistency. Applied BigQuery SQL for advanced analytics including window functions, nested and repeated fields, and time-based aggregations. Integrated CI/CD pipelines using Jenkins, automating build, test, and deployment for Java microservices. Enhanced backend performance through parallel processing, batch ingestion, memory optimization, and query tuning. Implemented security best practices using service accounts, IAM roles, and API-level authorization for BigQuery and backend services. Collaborated with cross-functional teams (product, data engineering, QA, DevOps) to deliver highly reliable, productionscale backend systems. Developed unit and integration tests using JUnit and Mockito to validate Kafka consumers, BigQuery queries, and REST APIs. Improved observability using structured logging, metrics, and alerting for streaming pipelines and backend services. Participated in architecture reviews, code reviews, and on-call production support. Environment: Java 17, J2EE, SOAP, REST, REST API, Spring 5.x, Spring Boot, Angular, Oracle 11.g, PL/SQL, Struts, MicroServices, AWS, Kubernetes, Kafka, GraphQL, Hibernate, jQuery, CI/CD, AJAX, Node JS, Spark, Lambda, Apache Maven, J Unit, HTML5, BigQuery Capital One, United states (Remote) Full Stack Java Developer May 2023 Apr 2025 Accomplishments: Implementing Java 17 features like Lambda expressions, Streams, filters, Spark, pipelines, Optional Interfaces etc. used Apache Kafka, AWS Advanced as the messaging infrastructure for asynchronous processing. Having good experience in Node JS, Java 17, J2EE, Spark, Cassandra technologies (Spring, Hibernate) and design patterns such as Fa ade. Wrote SQL queries to get the data, update the data from the database and to connect database in the DAO implementation. Involved in DevOps, Spark activities like configuring Jenkins job, Jenkins pipeline Script for CI/CD. Developing logical & physical data model using data warehouse methodologies worked on Amazon web services (AWS) specifically Amazon Lambda, Node JS for developing and deploying application. Designing dimensional modeling using SSAS packages for End-User and created Hierarchies Node JS in dimensional model for faster performance. Implementing Node JS, Cassandra Expressions, Directives, Controllers, filters and created Angular JS, service layer worked extensively on the front-end side using JSP, CSS, JavaScript, Spring Boot, Slick Grid, and jQuery & Spring Ajax. Experience in MicroServices development using spring 5.x and deployment in AWS Advanced created deployment models for cloud foundry. Working on data preprocessing, cleaning and publishing data to Apache Kafka topics writing Java 17 classes, reusable components and Java Beans for getting data from oracle tables. Implement PL/SQL procedures and views in Oracle 11.g Database using Altova No SQL Database spy performed configurations and day to day activities using Web Logic 12c. Migrate an existing application into a Microservices architecture using Mockito, REST APIs, Spring Boot and GraphQL, Enhanced UI modularity with Angular in microservices framework. Involving a Queuing system that takes in files from various sources formats them and uploads them to an s3 bucket using AWS Lambda, Node JS, No SQL and SQS. Involving in coding used Struts, Spring and Hibernate, REST/SOAP web services, JSF frame, Spark works designed and developed MicroServices business components using Spring Boot. Consuming REST API based MicroServices with Rest template based on Restful APIs worked with DevOps team for continuous integration (CI) with other software products and continuous development of the products (CD). Built open source, Message Broker Apache Kafka Node JS, Cassandra, No SQL and worked extensively to do a real-time streaming of Data Records between applications. Creating and exposed Restful APIs, Cassandra using Spring REST and Spring boot designed specific databases for collection, tracking, and reporting of administrative clinical data using AWS Advanced, SQL Server Management Studio. Migrate an existing application into a Microservices architecture using REST APIs, Spring Boot and GraphQL, Enhanced UI modularity with Angular in microservices framework. Executing SQL queries to retrieve data from databases for analysis extensively used ETL, AWS Advanced, Cassandra Spring Boot Data Stage to load from different source systems and load into the target data warehouse. Working on Procedure API and Consumer API to publish Stream of records to Kafka, Node JS, Spark Topics and to subscribe one or More Topics, Respectively Involving in the Development of Spring, Node JS, Cassandra, No SQL Framework Controller for request, response paradigm by Spring Controllers using Spring Boot. Environment: Java 17, J2EE, SOAP, REST, REST API, Spring 5.x, Spring Boot, Angular, Oracle 11.g, PL/SQL, Struts, MicroServices, AWS, Kubernetes, Kafka, GraphQL, Hibernate, jQuery, CI/CD, AJAX, Node JS, Spark, Lambda, Apache Maven, J Unit, HTML5, Web Logic 12c. Lumen Technologies, Bangalore, India Java Software Developer Aug 2021 - Aug 2022 Accomplishments: Designed System Testing and User Acceptance Testing migrated applications from Ant project structure to Maven, Node JS to support deployment on Tomcat. Used Java 11 expressions along with Streams for creating internal iteration and performing chain operations such as Filter, Map, Collect on a collection. Created clusters in and manage the clusters using Kubernetes (k8s) Jenkins to deploy code to create new namespaces, creating Docker images and pushing them to container registry. Used Java 11 features like Streams and Exp for API Development and performed unit testing using frameworks with Node JS framework, No SQL Spring Boot including authoring complex directives, services, controllers and filters. Strong experience with MONGODB, Spark development (reports, schema design, map reduce functions) and migrations from SQL relational databases to NoSQL, Node JS databases like MONGODB. Implemented PL/SQL procedures and views in Database using Altova Database spy performed configurations and day to day activities using Web Logic. Collaborated in an Agile Scrum team to deliver performant mobile features, ensuring quality through unit testing and end-to-end testing with Jest and React Native Testing Library. Used AngularJS, in creating animations based on CSS classes for a new requirement surfaced for the client developed the web services classes by using Service Oriented Architecture SOAP, WSDL, and UDDI. Involved in using AWS (Amazon Web Services) services like EC2, VPC, Cloud Watch, Cloud Front, Cloud Formation, IAM, S3, Amazon RDS, Elastic Cache, SNS, and SQS. Developed Bootstrap responsive web application using Angular for the UI with components, hooks, and RESTful web service APIs and GraphQL to fetch and display dynamic data. Migrated application logging framework from Log4j to Log back, Node JS followed Agile, Spring Boot methodology in used the fundamentals of Java Node JS features like parallel streams and filters through along with multithreading using did smoke tests, which are functional unit and integration tests on all major system components. Converted a monolithic app to MicroServices, No SQL architecture using spring 4.x using 12 factor app methodology. Deployed, Scaled, Configured, wrote manifest file for various MicroServices. Extensive experience in Amazon Web Services (Amazon EC2, Amazon S3, Amazon Simple DB, Amazon RDS, Amazon SQS, AWS Identity and access management, AWS Cloud Watch, Amazon EBS and Amazon). Used Cassandra, Core Java/Executor Service (multithreading, concurrency, memory management) consumed REST Web Services for getting the credit card information from third party application using EME. Involved in developing and delivery of a Microservices application utilizing almost of the AWS Stack including S3, EC2, DynamoDB, Kinesis, SNS and SQS. Used Angular 8, No SQL framework where data from backend is stored in model and populated it to UI developed unit and integration tests for existing MicroServices, Cassandra using J Unit, Miskito and Docker, Node JS environments. Implemented Spring Circuit breaker pattern, integrated Hysteria dashboard to monitor Spring MicroServices used Get as Version Control System for the application. Developed REST API's, Node JS using Spring Boot and hosted all MicroServices used based services to interact through a combination of REST, Spark and Apache Kafka, Node JS message brokers. Designed and Implemented the DAO layer using spring, Hibernate. Used MicroServices architecture, with Spring Boot, Node JS, No SQL based services interacting through a combination of REST and Apache Kafka message brokers. Environment: Java 11, J2EE, Spring 4.x, Spring Boot, AWS, Hibernate, GraphQL, OAUTH 2.0, SOAP, REST, REST API, JSP, Angular, MONGODB, AJAX, Kubernetes, jQuery, MicroServices, Jira, Kafka, Docker, spark, Maven, Ant, PL/SQL, Log4j, Log back, Tomcat and Web Logic. Stanvac Systems, Hyderabad, India Java/J2EE Developer Jan 2019 - Aug 2021 Accomplishments: Developed Intranet Web Application using Java 8, J2EE, Cassandra architecture, using JSP to design the user interfaces and Hibernate for database connectivity and Rest services templates are generated using swagger2 specifications Worked on the critical areas of the applications like Impersonation functionality, Internal Login page maintenance of the internal Asset Management tool which is especially designed to manage the images that are used in the application. Involved in the integration of Struts with Spring, Framework and implemented Spring MVC, Spring IoC, Spring AOP, Spring JDBC, Spring Persistence with JPA. Designed, developed and test HTML, CSS, JQuery, Angular JS, GCP and Redux that meet the accessibility of the web browser. Developed and consumed SOAP/Restful MicroServices Web Services using XML, and JSON message formats responsible for the analysis, documenting the requirements and architecting the application based on J2EE standards. Developed SOAP Web services for getting information from third party designed Frontend with in object-oriented Java 8 Framework. Excellent knowledge on Java concepts like Streams, Lambda Expressions, Method References used Maven for dependency management and build purposes and Jenkins, MicroServices, No SQL for continuous builds and deployments Experienced in deploying and managing virtual private cloud (VPC) and custom VPC subnets in GCP, to secure sensitive data and resources. Wrote the Hibernate-mapping XML files to define java classes database tables mapping used Hibernate Template for various database update, insert, delete operations and for involving functions, stored procedures, triggers. Experience in providing highly available and fault tolerant applications utilizing orchestration technologies like Kubernetes and Apache Mesas on (GCP) Google Cloud Platform. Used the tags inside the HTML, Spring MVC page to make the page effectively and to have great user interface developed and designed new cross-browser accessible interfaces using JQuery and JavaScript. Involved in developing applications for workflow using JSP's, spring MVC, Hibernate, AJAX, JavaScript technologies using Apache Tomcat 5.x. Developed new library with MicroServices, Spring MVC architecture using Rest APIs and fixed the defects that are not only raised on the areas that worked but also on the entire application. Environment: Java 8, J2EE, Spring, Spring MVC, Spring JDBC, SOAP, GCP, REST, REST API, JSP, Servlets, Angular JS, HTML, CSS, JavaScript, Hibernate, MicroServices, Bootstrap 4, Struts, Log4J, JSON, AJAX, SQL, Apache Tomcat 5.x, JIRA. EDUCATION Master s in Computer Science from The University of San Jose State University, USA (2022 2024) Keywords: cprogramm cplusplus continuous integration continuous deployment quality analyst user interface message queue javascript sthree database active directory rlang information technology microsoft mississippi procedural language