Saisrikar Boyapati

SAI SRIKAR Email:- Contact Number: - Summary: An accomplished software engineer specialized in object-oriented programming analysis with extensive full Software Development Lifecycle (SDLC) experience in Application Software Specifications, Design, Development, Testing and debugging, Maintenance. More than 7 years of strong software experience in design, development and deployment of web-based and Client-Server business applications using OOP, Java/J2EE technologies in various domains likeE-Commerce/Insurance. Ability to efficiently translate algorithms, ideas and concepts to software applications. Proficient in applying design patterns like MVC, Singleton, Session Facade, Service Locator, Visitor, Observer, Decorator, Front Controller, Data Access Object. Expertise in design with Use Case, Sequence diagrams, Activity diagrams, Class diagrams with exposure to UML, tools like Rational Rose and use of Rational Unified Process (RUP). Excellent experience in Object Oriented Analysis and Design (OOAD), Development, Implementation and Testing of various software applications using Java, J2EE. Good experience in developing customized policies in Apigee Edge and developing API's Expertise in the implementation of Core concepts of Java, J2EE Technologies: JSP, Servlets, JSF, JSTL, EJB transaction implementation (CMP, BMP, Message-Driven Beans),JMS, Struts, Spring, Swing, Hibernate, Java Beans, JDBC, XML, Web Services, JNDI, Multi-Threading etc. Proficient in implementation of frameworks like Struts, Spring, JSF, AJAX frameworks (RichFaces, MyFaces) and ORM frameworks like Hibernate. Expertise in XML technologies such as XSL, XSLT, XML schemas, XPath, XForms, XSL-FO and parsers like SAX, DOM. Expertise in developing REST and J2EE Web Services based on SOAP, WSDL, UDDI, JAX-WS, JAXB, JAX-RPC using tools like Apache Axis. Hands on Experience in creating API Proxy's in Apigee Edge using Node.js and Java Script. Proven experience with Application Servers like IBM WebSphere 6.x/5.x/7.x, Oracle/BEA WebLogic9.x/8.x/7.x/6.x, JBoss and Tomcat 5.x/4.x/3/x Proven experience in writing Queries, Stored Procedures, Triggers, Cursors, Functions and Packages using TOAD. Excellent experience with major relational databases – Oracle 8i/9i/10g, SQL Server 2000/2005/2008, DB2, My SQL. Extensive development experience in different IDE's like Eclipse 3.x, Aptana Studio, Jbuilder 9.x/8.x, WSAD 5.x, IBM RAD and Altova XMLSpy. Experience with Angular JS, JQuery, JavaScript, VBScript, Perl, AJAX, Adobe Flex, ActionScript, JSON, HTML, DHTML, CSS, Tiles, Tag Libraries. Experience in software configuration management using CVS, SVN and IBM Clear Case. Hands on experience with build tools like ANT, Maven and logging tools like Log4J. Expertise in testing with Junit using tools like JMeter. Experience in Agile software development process, Test Driven Development and Scrum. Experience in Jenkins integration service for software development. Experience in developing API and Security implementations using Apigee, Cassandra, Zookeeper REST API, Middleware, Layer 7 Secure Span Gateway, Experienced in Web designing & development, using HTML5, CSS3, JavaScript, XML, Angular JS,Angular 2.0, jQuery,Bootstrap, JSP, JSON, JSF and AJAX.  Experienced in Mean Stack (Mongo DB, Express JS, AngularJS, Node JS). Solid working experience on XML parsing using SAX, DOM and JAXB parsers Production support-Provided development (quick fixes) and technical support for complex/ critical applications. Coordinated with other teams to resolve end-user issues promptly. Expertise in implementing MicroServices Architecture using Boot Application, Eureka Discovery Service, Eureka Client, Netflix Eureka, Eureka Instance, REST, SOAP, JPA, Hibernate. Experienced in Non-Relational Databases MongoDB, Cassandra. Excellent written and verbal communication skills, Analytical, Problem Solving skills, strict attention to detail and ability to work independently, lead/work within a team environment. Skills: Java/J2EE Technologies Servlets, JSP, JSTL, JDBC, JMS, JNDI, RMI, EJB, JFC/Swing, AWT, Applets, Multi-threading, Java Networking Programming Languages Java JDK1.4/1.5/1.6,1.7,1.8 C++, C, SQL, PL/SQL Application/Web Servers: Oracle/BEA WebLogic 8.1/9.1, IBM WebSphere 5.1/6.0/6.1/7.0, JBoss, Tomcat 5.0.28/6.0,Bug tracking, Jenkins. Frameworks Struts 2.x/1.x, Spring 3.x/ 2.x, Hibernate 3.x, JSF 1.2/2.0,iBatis,Flex IDEs Eclipse 3.x, IBM WSAD, IBM RAD 7.x/6/x, IntelliJ Web technologies JSP, JavaScript, Json, jQuery, AJAX, XML, XSLT, HTML, DHTML, CSS Web Services JAX-WS, JAX-RPC, JAX-RS, SOAP, WSDL, UDDI, REST XML Tools JAXB, Apache Axis, AltovaXMLSpy Methodologies Agile, Scrum, RUP, TDD, OOAD, SDLC Modelling Tools UML, Rational Rose, Visio Testing technologies/tools JUnit, JMeter, HTML Unit Database Servers Oracle 8i/9i/10g/11g, DB2, SQL Server 2000/2005/2008, MySQL Version Control CVS,SVN, Rational clear case, git Build Tools ANT, Maven Platforms Windows 2000/98/95/NT4.0, UNIX, Windows 7 Professional Experience: Client: Verizon, Lowell, MANov ‘18 – Till now Role: Sr. Full Stack Developer Involved in analysis and design phases of Software Development Life Cycle SDLC/Agile. Developed Servlets and JSPs based on MVC pattern using Struts framework. Developed the User Interfaces using Struts, JSP, JSTL, HTML and Ajax, JavaScript. Developed Rest architecture-based web services to facilitate communication between client and servers. Extensively written unit test cases using JUnit framework. Optimized SQL queries used in batch processing. Implemented the caching mechanism in Hibernate to load data from Oracle database. Developed various generic JavaScript functions used for validations. Developed the presentation layer and GUI framework in JSP and Client-Side validations were done. Exposed the Web Services to the client applications by sharing the WSDL’s. Created and modified several UNIX Shell Scripts according to the changing needs of the project and client requirements. Wrote Unix Shell Scripts to process the files on daily basis like renaming the file, extracting date from the file, unzipping the file and remove the junk characters from the file before loading them into the base tables. Involved in the continuous enhancements and fixing of production problems. Generated server-side PL/SQL scripts for data manipulation and validation and materialized views for remote instances. Worked closely with QA team and fixed QA bugs as well as production issues with a quick turnaround time. Used multithreading for writing the collector parser and distributor process, which was getting real-time data from zacks API in format of JSON, using multithreading improved the performance by a lot. More over using concurrency package of collections made it thread safe. Setup the continuous Integration (CI) and continuous Deployment (CD) process for the application using the Jenkins. Implementing a Continuous Delivery framework using Jenkins in Linux environment. Using Jenkins for CI/CD, using Ant for build, GIT for version control On call production support, troubleshooting, root cause analysis experience Environment:J2EE,Jython, Oracle 12c, Eclipse, Ant, Tomcat, Agile Methodology, GitHub, JUnit, Unix, Jenkins. Client: Allstate Insurance Company, Chicago, ILAug ‘16 – Oct ‘18 Role: Sr. Full Stack Developer Description: The Allstate hosted services for premier insurance clients like Esurance, AFI that will allow a user to establish an account that will allow memberregistration and trips upload based on their driving behaviour. Customers will able to consume get serviceslike Get Scores, Get Trip Summary, Get Trip Details, Get Reports.Based on their scores the policy will be. Responsibilities: Extensively participated in the Analysis, System study and Designing of the project. Worked extensively with API Management product of Apigee edge in consuming the APIs in implementing customer use cases. Participated in Scrum meetings and project planning and coordinated the status sessions Developed front-end content using HTML5, CSS3, Bootstrap, Ajax, Angular 2and client-side validations using JavaScript. Created Typescript reusable components and services to consume REST API's using Component based architecture provided by Angular 2. Implemented Angular Router to enable navigation from one view to the next as user performs application tasks. Used Apigee Management API’s for certain operations. Implemented HTTP requests using Rxjs Observable library to handle multiple values over time. Involved in the development using Java/J2EE Technologies, Web services, Hibernate ORM Framework.  Responsible for creating and designing API’s using Apigee Edge. Implemented MicroserviceArchitecture, with SpringBoot-based services interacting through a combination of REST. Led the development & delivery of API program using Apigee platform. Implemented Producer-Subscriber model using Rabbit-MQ to handle backend Asynchronous calls.  Involved in creating MongoDB, collections and documents and developed Mongoose Schema objects to perform CRUD operations. Implemented Micro services Registration and Discovery with Spring Cloud and Netflix's Eureka.  Implemented RestTemplate, SpringMockMVC for Integrations tests &Mockito to mock the dependencies. Developed REST service documentation using Swagger UI and developed test cases using Junit and Mockito.  Developed Hibernate mappings, model objects, HQL, Query, Criteria, Lazy loading Transactions and Locking. Implemented application using Spring IOC, Spring MVC, Spring Batch, handled security using Spring Security. Developed Hibernate with Spring Integration as the data abstraction to interact with the database.   For Distributed Logging purpose used Spring Cloud Sleuth for Tracer & span Id generator. Used Pivotal App Manager to handle blue-green deployment.  Created Docker images and ran the Docker containers in various environments Implemented Dependency Injection using Core Spring Framework. Configured and used Log4J for logging all the debugging and error information. Written unit test scripts for controllers, filters and services using karma, Jasmine. Deployed Micro services/Cloud Native App's in Pivotal Cloud Foundry (Paas) and AWS. Implemented and maintained monitoring and alerting of production and corporate servers such as EC2 and storage such as S3 buckets using AWS.  Created Amazon Elasti Cache nodes, shards and clusters in Amazon Elastic Cache deployment.  Worked with project management tools like JIRA and worked in cloud computing environment.  Environment:  Java 1.8, HTML5, CSS3, JavaScript, Bootstrap, AJAX,JSON, Angular 2, Typescript, Spring (MVC, Security, Batch, Boot, Cloud), JPA, Hibernate 4.0, REST, SOAP, Apache CXF, MicroServices,Oracle 11g, Log4J, JUnit, APIGEE Edge, Security, Rabbit MQ, Spring Cloud Sleuth, MongoDB ,Maven 3.4, Git 1.8, Jenkins, SQL, Oracle SQL Developer, Windows 7,STS (Spring Tool Suite), Splunk, Hystrix, Ribbon, Zuul, Pivotal Cloud Foundry 1.7/1.9,Pivotal App Manger(PaaS), Pivotal Autoscaler, AWS, Pivotal CF Router, App Dynamics, Swagger-UI, Postman, SOAP UI. Client: AXA Equitable Insurance, Charlotte, NCNov ‘14 – Jul ‘16 Role: Full Stack Developer Description: The AXA Equitable hosted enrolment website for premier insurance clients that will allow a user to establish an account that will allow registration of multiple cards to one username and password. They will be able to receive the alerts via SMS, email or both when their card is used in a country that is determined to be outside their home country. The enrolment web service utilizes the in-Control platform to deliver the alerts. In addition, the existing Common Registration Web Service and Banknet Bridge services are utilized. Responsibilities: Involved in Requirement gathering, Conceptual design, Analysis, Detail design, Development, System Testing, and User Acceptance. Extensively used Scrum Programming concept which is part of Agile methodologies to plan work for every iteration and used continuous integration tool to make the build passes before deploying the code to other environments. Skilled in using Jira - Atlassian Agile Development software to meet the Sprint goals. Developed the J2EE application based on the Service Oriented Architecture (SOA). Responsible for building, maintaining and enhancing the Client/Server application using J2EE standard open-source framework Spring MVC, Hibernate and Oracle as Back-end. Developed front-end content using HTML5, CSS3, Bootstrap, Angular Js. Implemented latest HTML5 and CSS3 features like creating various effects, shading, 2D 3D animation, Shapes, Handling multimedia files and many others. Implemented Single Page Application (SPA) Pattern and used Angular Js to build a cross-browser application. Developed scalable applications using the MEAN (Mongo-DB + Express.JS+ Angular JS +NodeJS) Developed REST services using Node-JS, Express-JS, Body-Parser, Mongoose, Underscore-JS and other node modules to serve the web application with JSON data. Implemented best Search Engine Optimization (SEO) techniques for designing web pages to validate the Https request and response of the REST API using Postman which are generated by the node.js and express.js. Created various Mongo-DB collections and wrote services to store and retrieve user data from the application Implemented core features of Angular Js framework such as Dependency Injection, Data-Binding, Filters, Directives, Templates Services and Deep Linking. Used AJAX to get the data from the server asynchronously by using JSON/XML object and Jackson API. Developed angular JS based user interface and consumed RESTful services using AJAX calls.  Developed angular JS controllers, services and interacted with REST services using $resource. Involved in implementation of enterprise integration with web services and legacy systems using REST. Developed Rest Web Services to produce application business services at Web layer level. Used Java Messaging Services (JMS) for reliable and asynchronous exchange of important information such as payment status report on IBM WebSphere MQ messaging system. Micro services have been built using spring boot, Spring security and deployed to AWS cloud. Implemented Multi-Threading concept to pull data concurrently from multiple resources in order to generate PDF file in a timely manner. Developed the application using Spring Framework that leverages the classical MVC (Model-View-Controller) architecture. Designed, built, and deployed a multitude application utilizing almost the entire AWS stack (Including EC2, R53, S3, RDS, DynamoDB, SQS, IAM, and EMR), focusing on high-availability, fault tolerance, and auto-scaling.  Analyze AWS solutions to meet the application specific needs and discuss the same with business, get approvals.  Automation of various administrative tasks using AWS Lambda services. Working on performance and cost efficient solutions in AWS cloud to suit application specific needs Implemented features like logging, user session validation using Spring-AOP module and Spring security framework for authentication and authorization of the application. Used Spring Core for dependency injection/Inversion of control (IOC) and implemented using Spring Annotations. Secured the REST services using Spring Security and OAUTH framework. Designed and developed various Oracle database Simple and Complex Queries, PL/SQL procedures, Stored Procedures, Trigger and Functions Used Spring Batch for scheduling and maintenance of batch jobs. JMS was used to send/receive Asynchronous data from various message brokers. Used Hibernate as Object Relational Mapping (ORM) tool for back-end data Persistency. Extensively used Hibernate Query Language (HQL) for data retrieval from the database and managed the transactions using the Spring Hibernate Transaction Management. Developed Maven scripts for various tasks to automate the build process and for the deployment of the application in WebSphere server by generating WAR and EAR files. Implemented unit test cases using JUnit & Jasmine and used Jenkins for Continuous Integration and Continuous Development. Environment: Java 1.7, HTML5, CSS3, JavaScript, Node JS, Express JS,AJAX, JSON, Angular JS, Spring (MVC, Security, Batch, Boot), AWS, Mongo-DB ,Hibernate 4.0, REST, SOAP, Apache CXF, Apache Camel, Derby Database 10.5, Oracle 11g, Log4J,JUnit,IBM Web Sphere MQ, JNDI, Maven 3.2, Stash, Tortoise Git 1.8, Jenkins, SourceTree 1.6, JDK Migrator 1.0, SQL, UNIX, Oracle SQL Developer, Windows 7, Eclipse IDE 7.0. Client: GAPVAK Technologies, AP, IndiaMay ‘12 - July’ 14 Role: Java/J2EE Developer Description: Developed Freight tracking and forwarding system. It meets all the information requirements of freight service providers in moving their customers' shipments across various locations. It handles all operational, customer relations, financial, marketing and sales information needs of Air, Ocean and Trucking. Responsibilities: Designed the application using the J2EE design patterns such as Session Façade, Business Delegate, Service Locator, Value Object, Value List Handler, and Singleton. Developed Use case diagrams, Object diagrams, Class diagrams, and Sequence diagrams using UML. Developed presentation tier as HTML, JSPs using Struts Framework. Developed the middle tier using EJBs. Developed session, entity beans and message driven beans. Entity Beans used for accessing data from the SQL Server database. Prepared highand low level design documents for the business modules for future references and updates. Deployed the application on WebSphere application server in development and production environment. Undertook the Integration and testing of the different parts of the application. Developed automated Build files using ANT. Used Subversion for version control and log4j for logging errors. Code Walkthrough, Test cases and Test Plans. Environment: Java/J2EE, Struts 1.2, Tiles, EJB, JMS, Servlets, JSP, JDBC, HTML, CSS, JavaScript, JUnit, WebSphere 7.0, Eclipse, SQL Server 2000, log4j, Subversion, Windows NT Education details: Masters in Computers Science in Northwestern Polytechnic Univeristy in the year 2015 passed out. Bachelor of Technology in Computer Science Engineering, Acharya Nagarjuna University in the year 2012.