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Nikhil B - Java Full Stack Developer

[email protected]

Location: Remote, Remote, USA

Relocation: Any

Visa: H1B

Nikhil B Java Full Stack Developer 720-738-0738 [email protected] Any H1B ________________________________________ Senior Java Full Stack Developer with a demonstrated history of working in Software from past 9+ years. Great Experience on Enterprise, Distributed Application Development, Client/Server Applications, Web Services, Application development using J2EE Technologies such as Spring boot, Spring MVC, Spring Data, Node JS, Microservices, Hibernate. Expert in cloud technologies like AWS, Azure, PCF, GCP. PROFESSIONAL SUMMARY: Expertise in J2EE technologies such as Spring MVC, Spring Boot, Spring IOC, Spring batch, Hibernate, Soap and Restful web services, EJB, Struts, Servlets JSP JDBC, AWT, Swing and J2EE Design Patterns like MVC, DAO, Singleton, Factory pattern, service locator and Delegate. Proficient in Object Oriented Programming (OOP), Object Oriented Analysis (OOA) and Object-oriented design (OOD). Familiar with web services formats XML and JSON. Developed UI using HTML, CSS3, Typescript, Angular JS, Angular 4/6/8/9, Ajax, React, jQuery. Good Knowledge of developing the UI pages from scratch using HTML5, CSS3, JavaScript, jQuery, AJAX, Angular JS, React JS, and Node JS. Familiar with creating Custom Reusable React Components Library. Strong database development skills using Database Servers like Oracle, Sybase, and SQL Server. Used SQL, PL/SQL in Oracle, SQL Server in database modelling, administration, and development. Designed and developed the REST-based Microservices using the Spring Boot, Spring Data with JPA (Java Persistence API), and deployed Microservices onto Docker. Hands-on experience in multi-tier distributed environment, OOPS and OOAD concepts, good understanding of Software Development Lifecycle (SDLC), Service Oriented Architecture (SOA). Implemented Service Oriented Architecture (SOA) using Spring REST to create REST resources that include several components like Jersey Framework, Spring Boot (JAX-RS, Spring Boot), SOAP (JAX-WS, Apache CXF, WSDL, Apache Axis2), documented using Swagger& WADL. Implemented latest React features such as React Context API, React Hooks, Functional Components, and middleware such as Redux Thunk, Redux-Saga. Experience using React Components, Forms, Events, Keys, Redux, Animations, Flux concepts. Have Experience with RESTful Microservices using Spring Boot for customers to consume data. Expertise in Core Java concepts like Collections, Exception Handling, Multi-Threading, Java I/O. Experience in front end development using HTML5, CSS3, JavaScript, jQuery, Ajax, JSON, JSTL Good understanding of NoSQL Databases and hands-on work experience in writing applications on NoSQL databases like Cassandra DB, MongoDB, PostgreSQL DB. Implemented various screens for the front end using React JS and various predefined components from NPM (Node Package Manager), bower and redux library for Dependency management. Expertise in Swagger, AWS cloud platform which includes services like Elastic Bean Stalk, Route 53, Cloud Formation, Cloud security groups, deploying applications in AWS as EC2 instances. Good experience in working with Web/Application servers like Apache Tomcat, IBM WebSphere and/or Web Logic, JBoss. Experience in installing, configuring, tuning Apache Tomcat, JBoss. Worked on CI/CD tools for creating Jenkins jobs, triggering the build, and performing release cuts. Strong experience and knowledge of real-time data analytics using Spark Streaming, and Kafka. Good experience working with AWS Services like EC2, S3, Amazon Simple DB, Amazon RDS, Amazon Elastic Load Balancing, Amazon SQS, AWS Lambda, AWS Identity and access management (IAM), AWS CloudWatch, Amazon EBS, and Amazon CloudFront. Experience on DevOps essential tools like Kubernetes, Dockers GIT, Jenkins, deployed/managed applications to AWS, GCP, PCF. Experience in working with the APIGEE Developer portal. Expert in Various Agile methodologies like SCRUM, Test Driven Development (TTD), Incremental and Iteration methodology, Agile Development & Testing using Software Development Life Cycle. ________________________________________ TECHNICAL SKILLS: Programming Languages C, C++, Java/J2EE, SQL, PL/SQL, Python Java APIs J2EE, EJB, Servlets, JSP, JSTL, Custom Tag Libraries, JAX-RPC, JDBC, JMS, JAXB, JUnit, Mockito, Spring MVC, Hibernate, Spring AOP, Spring DAO, Spring Core, Spring Security, Spring REST, Spring Boot, JPA, Apache Kafka. Tools & Frameworks Struts, Spring, Hibernate, Spring MVC, Spring IOC, Spring AOP, Spring Security, JSF, Junit, SOAP UI, RabbitMQ, Spring Boot. Scripting Languages JavaScript, TypeScript, jQuery Web Technologies HTML/HTML5, XML, CSS/CSS3, Bootstrap, JSP, Ajax, Node JS, Express, React JS, AngularJS, Angular 4/6/8/9 Web/Application Servers Apache Tomcat, WebSphere, WebLogic, JBoss IDE s Eclipse, NetBeans, IntelliJ, IBM RAD, WSAD Databases Oracle, MySQL, NoSQL, MongoDB XML Technologies XML, XSL, DOM, SAX, DTD, XQuery, XSD and XSLT. Version Control CVS, Clear Case, SVN, GitHub, Bitbucket Methodologies Agile, Waterfall, Test Driven Development (TDD) Build Tools Maven, Gradle, Ant, Docker, Jenkins ________________________________________ PROFESSIONAL EXPERIENCES: Client: BNY Mellon, Pittsburgh, PA Mar 2022 to Present Sr. Java Full Stack Developer Developed Microservices using Spring Boot, Hibernate, Oracle. Used Eureka to call other Microservices. Created reusable and testable React JS functional and class components using ES6. Created RESTful Webservices using JSON data format to communicate with systems using Spring MVC. Developed Web interface using React JS, HTML, CSS, JavaScript, and Bootstrap. Implementing Service-oriented architecture (SOA) and OOP concepts using Web Services like SOAP, REST. Select the appropriate AWS service based on computing, data, or security requirements. Migrate Oracle 11g database to PostgreSQL database using ESF Database migration toolkit. Developed UI using Angular JS, Node JS, Typescript, JSP, CSS3, HTML 5, jQuery, Bootstrap, JavaScript. Implemented Spring boot-microservices to process the messages into the Kafka cluster setup. Develop REST Microservices using Java JDK 1.8 by previous phase resources and integration with Oracle. Deployed PCF on AWS EC2 to manage the containers created by PCF. Secured the APIs by implementing Oauth2 token-based authentication using spring security. Developed User Interaction UI screens using HTML, CSS3, Bootstrap, JavaScript, Angular 9, and NodeJS. Implemented security on microservices using Spring Boot Auth server which generated JWT tokens as OAUTH2 mechanism. Created pipelines in AWS Code Pipeline to deploy Docker containers in AWS ECS using CloudFormation, CodeBuild, CodeDeploy, S3, puppet. Created AWS S3 buckets for web app files, CloudFormation templates. Deployed Spring Batch application on Pivotal Cloud Foundry (PCF) instance and bind PostgreSQL services. Hands-on experience with AWS EC2, AWS S3, AWS RDS, VPC, IAM, AWS Elastic Load Balancing, Auto Scaling, Cloud Front, CloudWatch, SNS, SES, SQS, and other services. Create Spring Boot Microservices apps to Integrate, validate, decision, aggregate, audit, and exception. Used Angular 8 to create Single Page Application (SPA) to bind data to views, synchronize data with server. Created Angular service, integrated with REST APIs, Angular HTTP Client to send GET/POST requests, fetch data from server. Developed user interface by using the React JS, Redux for SPA development. Worked on building a data center with AWS. Installed SVN, GIT, Jenkins images on AWS. Developed a RESTful web API using Spring Boot. Spring Data is used to communicate with MongoDB. Used React JS for templating for faster compilation and developing reusable components. Used Java 8 features- lambda expressions, Parallel operations on collections, multithreading, effective sorting. Created custom, reusable, angular 8/9 modules, controllers, services to implement functionalities. Creates and configured Microservices architecture, integrated it with the React JS application. Used React & Redux Dev Tools plugins to observe component state and prop changes instantly. Managed clusters/workloads running on self-managed Kubernetes, AWS EKS, AWS ECS, and AWS Fargate. Extensively used Angular-CLI to generate components, routes, services, pipes and to run tests. Used AWS Cloud Watch to monitor AWS services and logs to monitor applications. Patch, Upgrade, and keep the PostgreSQL DBs current. Review all PostgreSQL logs for problems. Used Microservices, with Spring Boot services interacting through an amalgamation of REST, Swagger, Cassandra, and MQ message brokers and leveraging. Enhanced performance by Angular 8 Component-based development in view of future Angular transitions. Installation, administration, maintenance of CI/CD applications: Jenkins, Artifactory, SonarQube, Stash, and Docker. Created private cloud using Kubernetes that supports DEV, TEST, and PROD environments. Environment: Java 8, Angular 8/9, Servlets, EJB, JSP, JDBC, JNDI, XML, HTML/DHTML, CSS, Webservices, AWS Lambda, Kafka, JMS. AJAX, SOA, IBM MQ, JUnit, UNIX, SQL, Oracle 10g, 11g, Spring boot. Client: Liberty Mutual, Boston, MA Sep 2021 to Feb 2022 Sr. Java Full Stack Developer Developed Web interface using React JS, HTML, CSS, JavaScript, and Bootstrap. Comprehensive experience in using Node JS and Spring Boot implementing RESTful web service. Hosted and consumed RESTful Web services using JAX-RS API with Spring Boot. Used advanced java 8 features like Lambda expressions for array operations, Streams, Method reference, collections. Enhanced concurrency methods etc. throughout the application. Installed application on AWS EC2 instances and configured the storage on S3 buckets. Strong experience in developing Dynamic Single Page Application (SPA) using MEAN (Mongo, Express Angular and Node) full stack development tool kit. Developed Microservices using RESTful web services to provide all the CRUD capabilities. Used Amazon Cloud Watch to monitor AWS services and logs to monitor applications. Created reusable and testable React JS functional and class components using ES6. Used Microservice architecture with Spring Boot interacting through REST and used Executor Service framework to implement multithreading in programming to improve overall performance. Used React JS to create custom components to manipulate and display data in standard format. Built Angular 8 components, UI services to consume RESTful services using Angular 8 based components. Extensively used Node Package Manager (npm) tools like Gulp, Grunt, Web pack. Enhanced performance by Angular 8 Component-based development for future Angular transitions. Created and configured Microservices architecture, integrated it with the React JS application. Used React & Redux Dev Tools plugins to observe component state and prop changes instantly. Applied significant knowledge of industry trends and developments to improve service to our clients. Used Multithreading extensively to improve the performance of the application. Worked on React Virtual DOM,react views, rendering using components that has custom HTML tags Used Angular 8 for UI development and Developed HTML views with HTML5, CSS4, bootstrap, Angular 8. Implemented CI/CD with Jenkins, AWS Code Deploy, Packer for the deployment of Java Applications Implementing or exposing the Microservice architecture with Spring Boot-based services interacting through a combination of REST and Apache Kafka message brokers. Developed microservices with Spring to retrieve API routes for the entire cluster. Using this strategy each Microservice in a cluster can be load balanced and exposed through one API gateway. Implemented Microservice architecture using Spring boot and Spring REST to create REST endpoints and integrated Swagger to get dynamic documentation. Used Docker to implement a high-level API to provide lightweight containers that run processes isolation and worked on the creation of customized Docker container images. Configured Swagger for auto-generated documentation for all REST API calls. Deployed Docker contained Spring REST services into AWS EC2 container service using AWS admin console and used lambda to run applications in AWS console. Used Amazon Web Services (AWS) like EC2, S3, and Elastic Search. Experience with building Docker Images and running them on Docker containers. Environment: Angular 8, HTML5, CSS3, JavaScript, jQuery, AJAX, Spring Batch, JSON, TypeScript, Jenkins, Agile, REST, log4j2, Spring MVC, Spring, Spring Boot (Microservices), Swagger, Apache Kafka, Docker, JAX-RS, Junit, Mockito, Gradle, Oracle, SOAPUI, AWS EC2, AWS lambda, Hibernate. ________________________________________ Client: Workday, Pleasanton, CA Nov 2020 to Aug 2021 Sr. Java Full Stack Developer Implemented the Project structure based on Spring MVC pattern using Spring Boot. Developed RESTful service interface using Spring Boot to the underlying Agent Services API. Designed and Developed REST Web Services based on REST architecture, implemented various HTTP methods, did Error Handling to provided data to the front end Angular 7 in JSON format. Designed the user experience using UI Libraries including ReactJS, JavaScript. Experienced with event-driven, scheduled AWS Lambda functions to trigger various resources. Implemented REST Microservices using spring boot. Generated Metrics with method-level granularity and Persistence using Spring AOP and Spring Actuator. Developed user interface with HTML5, CSS3, SAAS, JSON, AJAX, Angular 7 and TypeScript. Developed with single page application framework Angular 7 extensively using routing, services, views, directives navigation through the different status and multiple modules. Developed reusable UI Components in Angular 7. Established simulation service with Spring Boot, RESTAPI. Used Angular 7 HTTP Module to make API calls and worked with the observables. Used other front-end technologies such as JavaScript, jQuery, HTML5, CSS 3.0, and Bootstrap. Microservices have been built using Spring boot, and Spring security and deployed to the AWS cloud. Developed UI Rich Web Applications and Web Service Applications using HTML 5, CSS 3, XML, AJAX, Object-Oriented JavaScript, Angular 7, Bootstrap, RESTful services, JAVA, JSP Integrated Spring ORM frameworks Hibernate for database operations with ORACLE. Used Hibernate Transaction Management, Hibernate Batch Transactions, and Cache concepts. Used Apache Kafka for building real-time streaming data pipelines (Message Queues) for the asynchronous exchange of vital information between multiple business applications. Developed RESTful service interface using Spring Boot to the underlying Agent Services API. Worked on React JS Virtual Dom, react views, rendering using components that contain custom HTML tags. Written SQL scripts and PL/SQL Scripts to extract data from Database and for Testing Purposes. Developed Interfaces using UNIX Shell Scripts to automate the bulk load & update Processes. Developed microservices with Spring to retrieve API routes for the entire cluster. Using this strategy each Microservice in a cluster can be load balanced and exposed through one API gateway. Performed Service Testing for Web services using Soap UI. Designed UI Libraries in ReactJS, JavaScript. Involved in writing Java API for Amazon Lambda to manage some of the AWS services. Utilized AWS Lambda to upload data into AWS S3 buckets and to trigger other Lambda functions. Developed Multi-Threaded Producer and Consumer MQ applications using spring boot. Installed the application on AWS EC2 instances and configured the storage on S3 buckets. Worked on creation of custom Docker container images, tagging, and pushing the images. Developed Mockito and JUnit test cases to improve code coverage. Set up CI/CD pipeline using Jenkins. Designed and developed Microservices business components using Spring Boot. Implemented unit tests for testing Angular components with frameworks using Karma and Jasmine. Created JSON request and validated the response using postman Interceptor and Swagger UI. Monitored the Error logs using Log4j and fixed the problems. Environment: Java 8, Spring 4, Hibernate, React, Spring batch, Spring Boot, JPA, JavaScript, Angular, CSS3, HTML5, Oracle 11g, log4j, Junit, TestNG, Microservices, Selenium, RabbitMQ, XML, Web Services, SOAP UI ________________________________________ Client: Bank of America, Charlotte, NC May 2019 to Oct 2020 Full Stack Java Developer Involved in multi-tier Java applications support, writing business logic using core Java, SQL queries for RDBMS. Developed Spring Boot application with Microservices, deployed it into AWS using EC2 instances. Implemented asynchronous messaging service using Kafka in Microservices-based application. Designing and implementing scalable, RESTful, and Microservices-based backend. The backend is being written in Java using Spring Boot for simplicity and scalability. Used Postman tool to test the API workflow on JSON files which are generated by NodeJS, Hapi JS. Developed Microservices (Spring Boot) to Integrate, validate, rate, pay, decision, aggregate, audit, exception. Worked with Angular Forms, Validations, Components, directives, controllers, and HTTP Request. Developed the Services using AWS Elastic Search, Restful Services using JAX-RS and Java Independently integrate multiple APIs and new features using React + Graph QL stack. Worked on React Virtual DOM, react views, rendering using components contain HTML tags. Used React JS to create custom components to manipulate and display data in standard format. Experience with Kibana to check logs and other time-stamped data sets stored in AWS Elastic Search. Implemented security on microservices using Spring Boot Auth server to generate JWT tokens as OAUTH 2. Responsible for migrating the Web services from shared Java environment to PCF - Cloud platform. Used AWS RDS databases, using data pump to migrate data to Relational Database Services (RDS). Involved in making of efficient and fast application running using Node JS Nonblocking I/O. Created and Worked with React JS Forms, Keys, Router, components, Events. Consumed Webservices (JAX-WS, JAX-RX) using Spring and used SOAP UI for testing these services. Created SQL queries to ensure integrity of data with frequent restoration, backup using PostgreSQL. Manipulated DOM, handled events, and applied animation effects with React. Involved in fetching user details from third-party applications using OAuth Authentication. Developed UI Screens for presentation using JSP, HTML5, CSS3, Bootstrap, JavaScript, and Angular JS 5/6. Implemented client-side data validations using JavaScript, Server-side validations with JSF validators. Developed the Rest API using the Java Spring Boot framework required for completing the stories. Implemented Cassandra NoSQL DB, associated RESTful web service for user profile data for vertical teams. Managed containers using AWS EC2, ECR, EKS, Fargate. Upgraded system from Angular 5 to Angular 6 Used Eclipse as a development tool, WebLogic as an application server, and CVS as version control. Used AWS Fargate service to auto-scale AWS EC2 instances with AWS Oracle RDS database service. Written different Routing (SPA), modules, and reusable components using Angular 6. Used React JS to turn application into Single Page. Implemented Drag and Drop using React-Draggable. Worked on setting up Maven scripts to build, package, and deploy application code to the target Apache Tomcat Servers and worked on continuous integration servers like Jenkins. Experience in SPA development, Directives, Services, Filters, Guard and Validations in Angular 6. Developed application based on Struts MVC, J2EE Design Patterns like Facade, Singleton, Factory & Value. Deployed Docker contained Spring REST services into AWS EC2 container service using AWS admin console and used lambda to run applications in AWS console. Used React JS for templating for faster compilation and developing reusable components. Developed application using Spring Boot, Java8, Hibernate, Web Services (RESTful). Environment: Java 8, React, Angular 4/5/6, Servlets, JMeter, EJB, Struts, JSP, JDBC, HTML/DHTML, CSS, Webservices, AWS Lambda, Kafka, JMS, AJAX, SOA, PCF, WebSphere, JUnit, SQL, Oracle, Spring, Hibernate. ________________________________________ Client: Idea Labs, Hyderabad, India Jan 2018 to Aug 2018 Sr. Software Developer Maintained Interface compatibility and concurrency using Java 8 new features like default, static methods, and Concurrency API. Also, used Functional Interfaces, Lambda expressions. Responsibilities included the development of new modules of the application such as Web using J2EE technologies and Spring Framework. Implemented service layer using Spring IOC and annotations and Controllers using Spring MVC. Implemented DAOs, and entities using Hibernate API and Hibernate QL. Implemented functionalities using Spring IO/Spring Boot and Hibernate ORM. Implemented Java EE components using Spring MVC, Spring IOC, spring transactions, and spring security modules. Developed Hibernate mapping file and the HQL queries and Criteria API for retrieving data. Created automated pipelines in AWS pipeline to deploy Docker containers in AWS ECS using services like CloudFormation, Code Build, Code Deploy, S3, and puppet. Built S3 buckets, managed policies for S3 buckets. used Glacier for storage and backup on AWS. Configured AWS Multi-Factor Authentication in IAM to implement 2 step authentication of user's access using Google Authenticator and AWS Virtual MFA. Worked with the team to develop POJO s using spring framework for dependency injection and integrating it with Hibernate and Spring Data JPA. Extensively worked on N-Tier architecture systems with application system development using Java8, J2EE, JSP, Servlets, Struts, JMS, EJB, JDBC, and Multithreading. Responsible for creating efficient design and developing User Interaction screens using HTML, CSS3, Bootstrap, JavaScript, Angular 6, and Node JS. Enhanced application performance by Angular 6 Component-based development in view of future Angular framework transitions. Developed Session Bean/Entity Beans for MPI. Created documentation for all the components which is included on the React-Bootstrap page. Worked on React JS usage metrics and end-to-end event tracing for analysis purposes. Coordinated with installations and upgrades to ensure proper Unix system performance. Served as PowerShell developer in many Windows-based migration and automation projects. Installed and maintained Unix security patches on the development systems. Engineered and implemented a fully automated end-user, data migration solution to eliminate business downtime during acquisition/merger using Windows PowerShell. Created PowerShell scripts to constantly monitor the messaging infrastructure health and notify my teammates in the event of a problem. Good amount of hands-on experience in developing server-side JavaScript frameworks using Node JS (Hapi JS, Express JS) to build event driven, non-blocking I/o model web applications. Developed DAO layer exposing access to MongoDB. Worked with containerization tools, can implement the transition to Docker and develop distributed cloud system using Kubernetes and Helm package manager for Kubernetes. Design, build and manage the ELK (Elasticsearch, Logstash, and Kibana) cluster for centralized logging and search functionalities for the App. Can handle commissioning and decommissioning nodes along with monitoring of Cassandra Cluster. Closely worked with kafka Admin team to set up Kafka cluster setup on the QA and Production. Environment: Java 8, Spring, Hibernate, Spring Data JPA, Webservices, WebLogic, JMS, EJB, AJAX, Struts, Web Services, Apache Kafka, SOAP, XML, JAXP, CSS, DHTML, Oracle, JavaScript, Cassandra, HTML, AWS ________________________________________ Client: Narvee Technologies, Hyderabad, India May 2013 to Dec 2017 Full stack Java Developer Developed the web tier using JSP, and Spring MVC. Implemented Spring Framework for the Application. Integrated Spring Dependency Injection (IoC) among different layers of an application. Used Hibernate for Object Relational Mapping and used JPA for annotations. Implemented REST web services using Apache-CXF framework. Created Data Access Objects (DAO) for addition, modification, deletion of records using specification files. Designed and modified User Interfaces using JSP, JavaScript, DOJO, HTML5, Angular JS, and jQuery and was involved in designing the user interfaces using JSP. Used Spring Boot, Spring and Hibernate in the Microservices. Deployed Spring Boot-based Microservices in Docker and AWS EC2 container using Jenkins. Developed Microservices using Spring MVC, Spring Boot, and Spring Cloud Implemented interface sub-classes using lambda expressions. Developed the UI for internal users with Spring MVC, AJAX, jQuery, AngularJS, and JSON. Designed, configured, and deployed Amazon Web Services (AWS) for a multitude of applications utilizing AWS (Including EC2, S3), focusing on high availability, fault tolerance, and auto-scaling. Implemented design patterns like Singleton, MVC, DAO, and Value Objects/Data Transfer Objects (DTO) to transfer data between different tiers, to decrease the network traffic when invoking remote objects. Involved in writing the web service code to interact with other applications. Integration of spring modules with AWS modules to consume third-party services. Deployed the Application in the WebSphere server. Developed persistence layer using spring JDBC template. Involved in Unit Testing of various modules in generating the Test Cases. Used SVN and GitHub as version control tools, Maven for build and management. Extensively involved in Test-Driven Development (TDD). Converted the HTML Pages to JSF Tag Specific Pages. Developed JSPs, managed beans using JSF. Environment: Java, Spring, Spring Boot, Spring MVC, Spring JDBC, Hibernate, J2EE, JSP, Ajax, XML, Log4j Maven, JavaScript, HTML, CSS, jQuery, SVN, GitHub, WebSphere, Agile, JAX-WS, Apache-CXF, JSF, AWS EDUACTION: Master s in computer science, University Of Dayton. Bachelor s in computer science and technology JNUTH Keywords: cprogramm cplusplus continuous integration continuous deployment quality analyst user interface message queue javascript sthree database information technology procedural language California Massachusetts North Carolina Pennsylvania