Lavan Kumar Email & Phone Number

United States

• Actively involved in Analysis, Design, Development, System Testing, and User Acceptance Testing. Successfully followed agile methodology in the Scrum Cycle model.• Architected and developed full-stack web applications using React, Java SE, and SpringBoot for enterprise clients, delivering robust and scalable solutions.• Collaborated with data science teams to integrate complex algorithms into backend REST APIs, ensuring seamless data flow and processing.• Designed and implemented dynamic, responsive user interfaces with React and AngularJS, enhancing user experience with intuitive controls and visualizations.• Optimized backend performance by implementing multithreading and performance tuning, resulting in a 30% improvement in response times.• Mentored junior developers, guiding them through coding best practices, and contributing to their professional growth within Agile teams.• Managed deployment pipelines and automated CI/CD processes using GitHub Actions, reducing manual deployment efforts by 40%.• Worked closely with UX designers to bring detailed designs to life, ensuring the final product matched client expectations.• Led troubleshooting and debugging sessions during UAT, resolving complex integration issues, and ensuring timely project delivery.• Integrated and maintained RDBMS (MySQL) and NoSQL (MongoDB) databases, optimizing queries and ensuring data integrity across applications.• Configured and managed cloud infrastructure on Microsoft Azure, including Web Apps, Storage, and VMs, ensuring high availability and performance.• Spearheaded the development of a high-traffic data visualization platform, using D3.js for interactive dashboards, driving a 20% increase in user engagement.• Developed and deployed microservices architecture, leveraging RabbitMQ for messaging and Nginx as a reverse proxy, ensuring seamless scalability and load balancing.

United States

• Successfully completed the Design and Development of project modules. Interacted with end users to gather, analyse, and implemented business logic using Agile Scrum Software Development methodology.• Designed and developed UI of application modules using CSS, jQuery, Angular.js, AJAX, JSON and DOJO.• Created and maintained Kafka topics and partitions, ensuring data consistency and replication.• Implemented Flux pattern by using redux framework as a core dependency.• Designed several UI screens with React.js, Redux, Saga, React HOC, React Bootstrap, Axios, SASS, and LESS.• Manage datasets using Panda data frames and MySQL, queried MYSQL database queries from python using Python-MySQL connector and MySQL dB package to retrieve information.• Involved in the Web/Application development using Python 3.5, HTML5, CSS3, AJAX, JSON and jQuery.• Experience in Designing, Architecting, and implementing scalable cloud-based web applications using AWS and GCP.• Developed a GCP Firewall rules to allow or deny traffic to and from the VM's instances based on specified configuration and used CP cloud CD (content delivery network) to deliver content from CP cache locations drastically improving user experience and latency.• Experience in providing highly available and fault tolerant applications utilizing orchestration technologies like Kubernetes.• Expertise in administering Red Hat OpenShift for deploying and managing containerized applications.• Improved application performance by 20% through code optimization and debugging.• Worked with Docker and Kubernetes to manage containerized applications.• Developed modules using Core Java APIs, Collections, Java 11 (Streams), Jordan API (Dates), Multi-threading, Exception Handling, Generics, Enums, Java I/O and object-oriented designs patterns.• integrated Flink with other components of the data processing ecosystem, such as Kafka or Hadoop.

United States

• Actively participated in the Analysis, Design, Development and Testing phases of various modules.• Understand and adopt Microservices architecture to gradually replace a core monolithic application to Microservices.• Implemented Model View Controller (MVC) architecture and developed Form classes, Action Classes for the entire application using Spring Framework.• Involved in developing UI using HTML5, CSS3, Bootstrap, Ajax, React JS, JavaScript, Typescript, jQuery and other JavaScript libraries.• Developed real time tracking of class schedules using Node JS (socket.io based on socket technology, Express JS framework).• Developed user interface by using React JS, Flux for SPA development.• Implemented React JS code to handle cross browser compatibility issues in Mozilla, IE, Safari,and FF.• Developed modules using Core Java APIs, Collections, Java 11 (Streams), Jordan API (Dates), Multi-threading, Exception Handling, Generics, Enums, Java I/O and object-oriented designs patterns.• Managed Eureka Client, Eureka Server, Eureka Instance, Eureka Service through Spring Boot.• Involved in implementing Microservices Architecture using Boot Application, Eureka Discovery Service, Eureka Client, REST, SOAP, Hibernate.• Secured the REST API’s by implementing OAuth token-based authorization scheme using Spring security.• Expertise in spring based microservices, and enabled discovery using Eureka Server.• Designed and developed RESTful Web Services using Spring Boot.• Involved in using React.js for creating interactive UIs using One-way data flow, Virtual DOM, JSX.• Implement modules into Node JS to integrate with designs and requirements.• Developed server-side application to interact with database using Spring Boot and Hibernate.• Developed RESTful Services with Java using JAX-RS, Jersey, and Spring Boot.• Worked on NOSQL database as part of Open-Source participation.

India

• Responsible for gathering and understanding the system requirements by interacting with clients.• Generated the Class diagrams, Sequence diagrams extensively for all the process flows using RAD, MS VISIO.• Designed and developed GUI screens for user interfaces using JSP, JavaScript, XSLT, AJAX, XML, HTML5, CSS3, Bootstrap, jQuery and DHTML.• Design and developed the REST based Microservices using the Spring Boot, Spring Data with JPA.• Worked on Java 8 functional programming concepts like Streams, Functional Interfaces, new date time API and lambda expressions.• Extensively involved in coding with Core Java concepts like Collections, Exception Handling,Multithreading, Java I/O, and Generics to implement some business logic.• Used Core, Context, and Security, Bean modules of Spring Framework.• Implemented MVC, Singleton, Factory, DAO, Value Object, session, Facade, Data Access Object, Business Object paradigm.• Implemented microservices using Pivotal Cloud Foundry (PCF) platform built upon Spring Boot Services.• JPA and Spring Rest to provide a Restful Interface based on Spring Boot application.• Handling orchestration service and rule engine which is implemented in NodeJS.• Created Stored Procedures, SQL Statements and triggers for the effective retrieval and storage of data into database.• Setup CI/CD pipeline process for the application using the Jenkins.• Used microservice architecture, with Spring Boot-based services interacting through a combination of REST and MQ or Apache Kafka message brokers and leveraging AWS to build, test and deploy microservices.• Used Apache Kafka as a messaging system in migrating microservices to the cloud.• Changing the AWS infrastructure Elastic Beanstalk to Docker with Kubernetes.• Moving existing monolithic architecture to microservices and migrating them to AWS cloud.• Used AWS Services platform to upload data into AWS S3 buckets and create EC2 instances.

India

• Collaborate closely with business owners, users, project managers, requirements analysts, testers, and other stakeholders in the software development process.• Developed the presentation layer written using JSP, HTML, CSS and client-side validations were done using JavaScript, and jQuery and Angular JS.• Extensively used AngularJS, jQuery UI to add functionalities and effects like Accordion, Infinite Scroll bar, Slider bar, Draggle/Droppable, Resizable, Progress bar.• Used jQuery framework for creating front end applications and for Client-Side validations.• Worked on the JAVA Collections API for handling the data objects between the business layers and the front end.• Implemented Multithreading for handling multiple requests and for high performance.• Implemented Java Swing for developing light weight front end screens.• Used IBM WebSphere and JBoss as the Application Servers.• Estimate effort for completing new features, enhancements, and detect fixes.• Participated in design review and code review activities of the team.• Used the Agile methodology to develop the application.• Implemented AJAX Frame works, jQuery tools examples like Auto Completer, Tab Module, and Calendar and Floating windows.• Worked on JMS and IBM Messaging Queue (MQ) configurations.• Built REST API endpoints for various concepts using JAX RS API.• Developed Session, Entity and CMP beans (EJB) for crucial business Logic.• SQL queries and Stored Procedures were written to get data from various tables.• Updated Struts-config.xml files to integrate all the components in the Struts framework.• Development carried out under Eclipse Integrated Development Environment (IDE).• Used Maven as a build tool.• Participated in design discussions and object model development workshop sessions for different lines of business.• Build and maintain SQL scripts, indexes, and complex queries for data analysis and extraction.