Sam B Email & Phone Number

Developed scalable and elegant solutions for our B2B cloud-based marketplace and manage tasks and provide quality deliverables in a highly agile team environment. Collected records from 5 different data warehouses and push to Kafka topics by constructing Scala Spark software data pipelines. Worked on Cassandra concepts such as locking, transactions, indexes, replications, schema design, configured Dispatch Servlet in Spring MVC for handling business logic and ran Log aggregations, website Activity tracking and commit log for distributed system using Apache Kafka. Developed Spring REST web services to serve multiple clients across the application and organization. The data is provided in JSON and used Jackson library and consumed REST web services and designed and developed the REST based Microservices using the Spring Boot, Spring Data with JPA. Strong experience in big data, Bigdata Integration and Analytics technologies including Apache Spark, Hadoop, Kafka, Storm. Leveraged GraphQL Introspection in performing static analysis on GraphQL API queries to quantify query characteristics, cross-reference queries. Implemented Java J2EE standards, MVC architecture using Spring Framework, used Spring framework for implementing Dependency Injection, AOP, Spring ORM. Responsible for creating efficient design and developing User Interaction screens using HTML, CSS3, Bootstrap, JavaScript and Node JS. Worked on messaging/queuing systems, streams and Microservices. Developed Robust User Interface using Bootstrap, ReactJS, NodeJS, BackboneJS, JSP, JavaScript, jQuery, CSS, and HTML. Development of software using core java 11 with integration of Apache Storm, Apache Kafka. Involved in coding for the presentation layer using Apache Struts, XML and JavaScript.

 Developed Spark-Scala applications to migrate Historical and incremental data load from different source systems file, RDBMS and streaming data into Hadoop and also developed End to End Spark applications Using Scala as per the Business Developed restful webservice using Spring Boot and deployed to Pivotal webservices, designed and developed Micro services business components using Spring Boot. Implemented user interface guidelines and standards throughout the development and maintenance of the Website using the HTML, CSS, JavaScript, jQuery and React JS. Built reusable and customizable components for the new website using React.JS and React-Routes to create a single page web application.  Designed and implemented a dynamic DB driven data capture solution and worked with RabbitMQ and AMQP Java APIs for Queues to build the application as SOA used technologies such as the Web Services Description Language (WSDL) and Simple Object Access Protocol (SOAP) to build enterprise applications. Developed a Spark job in Java which indexes data into Elasticsearch from external Hive Tab Administer CI/CD(Jenkins) tools stack administration and maintenance and used Jenkins for Continuous Integration (CI) and Continuous deployment (CD) Logic application Server. Launched AWS EMR Instance using Amazon Web Services using spark application, implemented Spark using PySpark and Spark SQL for faster processing of data. Involved in designing and coding of payment services as well as written sequence diagrams of payment services, also developed mobile payments platform using Agile methodology, OOA/OOD, Design Pattern, Test Driven programming, Java/JEE, Spring Framework, Spring Integration, PostgreSQL, DB Unit, Liquibase, Web Services, GIT, Maven, Tomcat, JUNIT, mockito, testing, CI/CD etc.  Experience in back-end, including implementation and maintenance of web applications, web services, microservices, and data access layers using MVC, REST, JSON.

 Designed and coded application components in an Agile/TDD environment utilizing a test-driven development and pair-programming. Used Average aggregations metrics in Elastic Search to look for specific numeric field in various documents. Created Front-end Single Page Applications using semantics in HTML5, CSS3, JavaScript, Bootstrap, ReactJS, NodeJS and MongoDB. Developed the application using spring framework that leverages model view layer architecture, also configured Dependency Injection also involved in the sprint planning sessions of the Agile SCRUM methodology with Architecture, BA and QA teams. Used Micro service architecture with Spring Boot based services interacting through a combination of REST and Apache Kafka message brokers and also worked with Kafka Cluster using Zookeeper. Worked on developing Restful endpoints to cache application specific data in in-memory data clusters like REDIS and exposed them with Restful endpoints. Created new REST web service operations and modified the existing web service's WADLs Web Application Description Language as well as also used SOAP UI tool to test the REST web service operations. Implemented Docker containers to create images of the applications and dynamically provision slaves to Jenkins CI/CD pipelines and actively worked in migrating the application from WebLogic to WebSphere environment. Designed and Developed Agent Interface from scratch Used Spring Core Annotations for Dependency Injection Spring DI and Spring MVC for REST API s and Spring Boot for micro-services and Used JDBC interfaces to perform CRUD operations on database. Designed and developed the REST based microservices using the Spring Boot, Spring Data with JPA. Maintained Cross Browser compatibility & implement Responsive Web Design using Twitter Bootstrap, custom media queries.