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Click here or scroll down to respond to this candidate NAME: Candidate's Name KRISHNA MEKALAFull Stack Java DeveloperPHONE: PHONE NUMBER AVAILABLEEMAIL: EMAIL AVAILABLELINKEDIN URL: https://LINKEDIN LINK AVAILABLE===================================================================================Professional Summary: Full Stack Java Developer with 10+ years of professional experience in Software Development Lifecycle (SDLC) core areas such as analysis, design, implementation, testing and deployment of Object Oriented, Client - Server, Web-Based, Distributed and Enterprise Applications with Java/J2EE technologies and developing applications with Agile methodology. Proficient in analysis, design and development of Java, Spring, and Struts with Hibernate, Servlet, JSP, JavaScript, jQuery, Direct Web Remoting, and JDBC based applications. Skilled with Java features like parallel streams, lambda expressions, functional interfaces and filters.
Knowledgeable in Core Java concepts such as OOPS, Collections, Threading, generics, Exception handling, Multi-Threading, Execution services, concurrent utilities, File IO, Garbage Collection and Serialization. Adept in using and implementing design patterns such as Model-View-Control (MVC), Data Access Object (DAO), Service Locator Factory, and Singleton & Business Delegate. Competent in applying best practice Design Patterns and Strategies to enterprise applications to reduce tight coupling, maximize performance, and reduce maintenance/extensibility risks. Well versed in client scripting languages and server scripting languages like HTML5, CSS3, Boot Strap, Ajax, and jQuery, JavaScript, AngularJS, NodeJS, ReactJS and VueJS. Experienced in developing applications in a single page (SPAs) using various JavaScript frameworks like ReactJS, Angular12/8/6/4/2, AngularJS, BackboneJS, NodeJS, VueJS and ExpressJS. Familiar with Kafka for streaming real-time feeds from external rest applications to Kafka topics. Proficient in implementing Spring Boot Microservices to divide the application into various sub modules. Specialized in Microservices development using Spring Boot and deployment in Pivotal Cloud Foundry (PCF).
Skilled in application development using Spring Modules like Spring Boot, Spring Data JPA, Spring Core, Spring AOP, Spring MVC, Spring Security, Spring Batch, Spring Cloud and Spring DAO. Expertise in batch processing using Spring Batch framework to extract data from database and load into corresponding Loan App tables. Well-versed in Hibernate and in using Hibernate Connection Pooling, HQL, Collections, Hibernate Caching, Hibernate Transactions, and Optimistic.
Proficient in SOAP based Web Services using Apache CXF, JAX-WS and RESTful organizations like JAX-RS. Strong background in XML and its parsing technologies like XSL/XSLT, SAX, DOM, X path, SOAP, WSDL, DTD, XSD, XMI, SOA, JAXB, JAXP, Apache Axis.
Experienced in AWS Cloud platform and its features like EC2, VPC, EBS, Redshift, AMI, Lambda, SNS, RDS, Aurora, EBS, CloudWatch, CloudTrail, CloudFormation, Auto scaling, CloudFront, Security Groups, IAM, S3, and Route53. Extensive experience on serverless architecture using AWS Lambda.
Hands-on experience in Azure Cloud Services (PaaS & IaaS), Storage, Web Apps, Application Insights, Logic Apps, Function Apps, Service Bus, Azure Monitoring, ACR and Azure SQL. Skilled in working on PCF (Pivotal Cloud Foundry) open-source service that allows development teams to run applications on various on-demand cloud computing platforms.
Proficient in Docker Containers to create Docker Images and Kubernetes.
Expert in using Azure SQL extensively for database needs in various applications.
Hands-on experience with SQL/No SQL databases systems like Oracle, SQL Server, MySQL, MongoDB and DB2. Capable of writing and handling SQL Queries, PL/SQL, Stored Procedures and Triggers. Engaged in J2EE Testing in creating experiments with JUnit for Unit testing, and logging utilizing Log4j. Experienced with IDE tools like Eclipse, STS, NetBeans, and IntelliJ.
Proficient in using the version control tools such as GIT, SVN, CVS and Rational Clear Case.
Knowledgeable in developing building tools like Ant, Maven and Gradle. Hands on experience with UNIX, Linux commands and deployment of applications in Server and ability to work effectively on Windows platforms. Skilled in entire SDLC in Intranet and Internet applications using Web/Application Servers like Tomcat, Glassfish, JBoss, WebSphere and WebLogic Application Server.Technical Skills:Java/J2EE TechnologiesJava 11/8/7/6, JDBC, JNDI, JMS, JSTL, Java Beans, Java Multithreading, EJBWeb TechnologiesHTML5, XML, SAX, DOM, CSS3, JavaScript, AJAX, jQuery, Angular 12/8/6/4/2, AngularJS, NodeJS, Bootstrap, ReactJS, Typescript, VueJSFrameworksSpring (MVC, IOC, Boot), Hibernate, Spring Batch, Spring Security, Spring Cloud, Spring DAO, StrutsDesign & GUI ToolsEclipse, IBM Integration BUSApp ServersIBM WebSphere, Apache Tomcat, BEA Web Logic, JBossCloud TechnologiesAWS Cloud (EC2, VPC, EBS, Redshift, AMI, Lambda, SNS, RDS, Aurora, CloudWatch, CloudTrail, CloudFormation, Auto scaling, CloudFront, Security Groups, IAM, S3, and Route53), MS Azure Cloud, PCFDatabases/ToolsOracle, SQL Server, MySQL, Toad, MongoDBMethodologiesAgile, WaterfallVersion Control/CI-CDCVS, SVN, Git, GitHub, JenkinsOperating SystemsWindows, Linux, UNIXProfessional Experience:Client: Ensono Company, Chicago, Illinois. June 2022 - PresentSr. Java Full Stack Developer.Responsibilities: Develop programming logic, and code changes by using Spring Boot on the server side and Angular with Typescript on the client side. Execute business logic, and validation framework using Spring Webflow and Spring MVC. Develop catalog-specific microservices on Spring Boot and integrated JAX-RS into Spring Boot application. Create Hibernate mapping files for class associations, inheritances, and generating sequences. Integrate Hibernate with Spring and configured corresponding XML configuration files. Apply REST client using JERSY to consume data from the legacy applications. Implement Java Beans with JAXB Annotations for converting Java Objects to and from XML Develop SQL for querying the Database, wrote stored procedures and triggers for SQL server. Increased database performance utilizing MySQL configuration changes across multiple instances. Configure JBOSS Application server and used Oracle database with Hibernate ORM framework and used the functionalities of Hibernate's second-level EHCache. Design dynamic schemas in NoSQL MongoDB, using rich queries and sharding for horizontal scalability. Develop front end GUI using JavaScript frameworks for single-page applications. Use Angular CLI to generate components, services, and filters and compiled them in different environments. Create reusable UI Directives by defining AngularJS Directives attaching Event Listeners and updating DOM. Develop POCs and Solutions for various system components using Microsoft Azure. Implement Azure Application Insights to store user activities and error logging. Develop Azure Function App to drive events and compute the code triggered in Azure or third-party service. Configure the Docker Containers and created Docker files for multiple environments. Migrate existing modules in IBM MQ to Apache Kafka and created Kafka adaptors for decoupling the dependency. Design and code application components in agile environment using Jira with test-driven development approach. Perform manual and regression testing using JIRA X-RAY tests, writing the scenarios. Utilize XML technologies like XPath, and XSTL for preparing reports. Use Git for source code management and Log4j for the logging the output to the files. Configure Continuous Integration and Continuous Deployment (CI/CD) with Jenkins. Develop the application using Spring Tool Suite (STS) and GIT for version control.Environment: JavaJDK 11, Microsoft Azure, Azure Application Insight, Azure Function App, Spring Boot, AngularJS, Angular 12, Java Beans, JavaScript, HTML, CSS, Restful Services, SQL, Docker, Web services, Microservices, Maven, Spring Tool Suite, JAX-RS/Jersey, JUnit, Log4j, XML, and JSONClient: Texas Health and Human Services - Austin, TX. Sept 2020 - May 2022Java Full Stack Developer.Responsibilities: Involved in all the phases of software development lifecycle (SDLC) including requirements collection, design & analysis of the customer specifications, development, deployment and customization of the application. Applied Core Java concepts including Multi-Threading, Exception Handling, and Collections framework extensively in the business logic layer to manage application data objects. Leveraged J2EE patterns such as Singleton, Service Locator, Session Fa ade and Business Delegate in development. Maintained relationships between application components using Spring MVC Framework IOC design pattern. Designed and developed application based on Spring Framework, Spring MVC and Spring Templates. Utilized Spring Framework for Dependency Injection and integrated with Hibernate DAOs for ORM mapping. Implemented the logging using Log4j which is used to log both User Interface and Domain Level Messages. Implemented Hibernate in persistence layer for mapping an object-oriented domain model to a relational database. Involved in Spring Configuration XML files that contain declarations and another dependent object declaration. Used Spring Transactions in the application and spring beans to develop Session beans for the business logic. Implemented Spring service layer with dependency injection, transaction management, and DAO annotations. Employed Maven as the build tool and utilized GIT to access the code repository. Contributed to enterprise application integration with Web Services and Legacy Systems via REST, leveraging Axis and Jersey frameworks. Leveraged Microservices with Spring Boot services interacting through a combination of REST and Spring Boot. Implemented Spring OAuth authentication framework to secure Restful web services by generating access tokens for accessing protected resources. Developed UI using HTML, CSS and jQuery to display the data on the client side. Called web services with REST Architecture to specify constraints through Angular JS services to get XML files. Optimized in-browser use with Backbone JS to load the module and to improve the Speed. Utilized JavaScript frameworks such as jQuery, NodeJS and AngularJS for Front-end development. Developed a dashboard based on Ajax calls with Business Customers Count, Flags, Real-time graphs for Analytical Reporting using NodeJS. Wrote SPA using NodeJS as the server side, Gulp, Webpack (ES6), Restful web services plus Ajax and AngularJS. Developed infrastructure on AWS by employing services such as EC2, RDS, Cloud Front, Cloud Watch, and VPC. Created customized AMIs based on existing AWS EC2 instances by creating image functionality, and snapshot for disaster recovery. Configured AWS Identity Access Management (IAM) Group and Users for improved login authentication. Set up an Elastic Load Balancer to balance and distribute incoming traffic to multiple servers running on EC2 instances. Configured EC2 instance and Route53 for DNS hosting on AWS for dev environment. Managed the multi-tier and multi-region architecture using AWS Cloud Formation. Built scripts on AWS Cloud for scheduling EC2 auto scaling load balancer with Java SDK. Automated data changes and reporting by composing and executing MongoDB scripts and wrote a MongoDB client to receive data from AMC for companies. Provided recommendations on Performance tuning for applications with NoSQL MongoDB database. Employed Selenium Data-Driven framework for application testing, integrated with Maven, TestNG (Unit Testing tool), and Jenkins (Continuous Integration Tool) for continuous delivery pipeline.Environment: Java, J2EE, Spring 4.0, Hibernate 4.0, AWS, EC2, RDS, IAM, Cloud Front, Cloud Watch, VPC, Pivotal Cloud Foundry (PCF), Spring MVC, Spring Boot, Spring Eureka, AJAX, JMS 1.1, XML, SOAP, WSDL, REST, JDBC, JAX-WS 2.2, JavaScript 1.8.2, Angular 8, NodeJS, UML, HTML5, JAXB 2.2, SVN, Log4J, JMeter, Grunt, Webpack, Microservices, WebSphere 8.5, Application Server, Eclipse, Oracle 11g, GIT, Maven, Jenkins, Selenium, TestNGClient: GE Healthcare, Chicago, Illinois. Dec 2018 - Aug 2020Full Stack Java Developer.Responsibilities: Developed the application with Spring Boot using annotations and configured Spring bean profiles. Created SOAP and RESTful web services with Spring MVC, utilizing WSDL, DTDs, and XSD schemas for Active Directory integration. Integrated data in multiple applications using MongoDB for dynamic JSON document management. Utilized JUnit for unit testing, Selenium for UI testing, and FitNesse for integration testing. Configured SOAP/WSDL web services and tested them with SOAP UI, developed a NodeJS and MongoDB POC. Built JAX-WS web services with Apache CXF and created NodeJS client APIs. Implemented REST controllers with Spring Data REST for JSON data services. Used Spring Core Annotations for dependency injection and integrated Spring with Apache Camel. Developed DAOs with JPA and Hibernate for Oracle database interactions. Managed version control with GIT, built with Maven, and automated CI/CD with Jenkins. Created ReactJS components with Redux, Flux, and animations. Configured Jenkins and AWS for builds and deployments on the Tomcat server. Performed security scanning with Veracode and fixed identified vulnerabilities. Developed applications using Spring Boot and secured them with Spring Security, JSTL, and EL. Deployed applications on Pivotal Cloud Foundry with role-based access controls. Re-architected monolithic services to microservices with Spring Boot and Pivotal Cloud Foundry. Optimized front-end performance with Backbone JS and frameworks like jQuery, NodeJS, and AngularJS. Configured AWS Elastic Load Balancer, EC2 instances, and Route53 for DNS hosting in the dev environment. Managed multi-tier, multi-region AWS architecture with CloudFormation. Automated EC2 auto-scaling with Java SDK scripts on AWS. Developed robust service classes and utility APIs for cross-framework integration and reusability. Enhanced the UI using HTML, JavaScript, XML, JSP, CSS as per the requirements and applied JQuery for client-side validations.Environment: Java 11, Microservices, AWS, Hibernate, Spring, Spring MVC, Spring Boot, Spring Security, Spring Data, Spring Batch, SOAP, RESTful, Soap UI, MongoDB, HTML, JavaScript, ReactJS, NodeJS, AJAX, Log4J, JUnit, Selenium, Protractor, Veracode, Maven, Apache Tomcat, Jenkins, GIT, Bash Shell, JIRA, Eclipse, MongoDBClient: Bank of New York Mellon, NY. June 2017 - Nov 2018Java Developer.Responsibilities: Participated in all SDLC phases following Agile Methodology. Developed object-oriented JavaScript, proficient in AJAX, jQuery, HTML5, Angular, Node.js, and CSS. Utilized Spring MVC and Hibernate to enhance the MVC framework. Implemented efficient data transactions with Hibernate and MySQL Database. Established database connectivity using Spring JDBC framework across various modules. Developed logical layers and modules including UI Delegate Layer, Data Access Layer, and Services Layer. Implemented Data Access Object (DAO) layer for JDBC-supported SQL query execution. Employed Hibernate for object-relational mapping and SQL query optimization. Implemented back-end functionality with Singleton and Session Facade design patterns. Designed and developed REST API-based Microservices with Spring Boot, Spring Data JPA, and Swagger. Developed Spring Boot Microservices and maintained legacy Spring MVC applications on WebSphere. Employed Spring Boot for rapid cloud Microservices development and implemented Spring IOC Injection.
Utilized Java Server Faces (JSF) Navigation rules and tags for UI enhancement. Implemented AJAX in JSP for client-side validation. Deployed applications on WebLogic Server and integrated Drools Rules as a service in J2EE environment. Wrote SQL queries, PL/SQL stored procedures, triggers, and packages for Oracle database. Developed Apache Ant scripts for war/ear file creation and deployment. Managed version control with Git, performing code merges and branching in GitHub. Conducted unit testing with JUnit and utilized Git for version control. Utilized JIRA issue tracker for bug tracking and resolution.Environment: Java 8, Ajax, jQuery, Spring MVC, Spring Boot, Spring JDBC, Spring IOC, Spring Data, Microservices, JSP, JDBC, Hibernate, JSF, AngularJS, Angular 2, JavaScript, HTML5, CSS3, Servlet, Drools Rules, WebLogic, Rest API, Oracle, GitHub, JUnit, Ant, Eclipse, JiraClient: Arvan Technologies Pvt Ltd. June 2012 July 2015Java/J2EE Developer.
Responsibilities: Successfully designed, coded, and tested business logic for software applications. Implemented Java Beans with JAXB Annotations for marshaling and un-marshaling of Java Objects. Utilized JSP as the view, Servlet as the controller, and Java Beans as the model to implement Spring MVC for handling HTTP requests. Employed Hibernate for object-relational mapping, including creating mapping files for class associations, inheritances, and generating sequences. Developed SCM using JSP/HTML for user interfaces, Servlets for business logic controllers, and JDBC/XML parsing for MVC. Designed Action Class components for executing business processes and configured Struts components like Struts-config.xml, tiles, form-beans, and plug-ins for Bootstrapping technology. Created reusable Java classes for business logic functionality using services like JDBC and JNDI. Implemented Struts framework using MVC design pattern and front controller pattern. Designed user interface with Struts web MVC and Action Servlet as the front controller. Developed websites with Java and XSLT, integrating Tag Libraries in Struts framework. Extensively used JavaScript and jQuery plug-ins for data fetching, display, and interactive features. Set up Java/J2EE development environment using Eclipse, Ant, and Apache Tomcat.Environment: Core Java, JDK, J2EE, JSP, Java Beans, MySQL, Ant Build, JDBC, Struts, Hibernate, HTML, CSS, XML, XSLT, JavaScript, jQuery, JUnit, Ajax, TDD Methodology, Apache Tomcat, Maven, Eclipse IDE_______________________________________________________________________________________________Education Details:Eastern Illinois University, Charleston, IL Aug 2015 May 2017Master of Computer and Information Sciences GPA 3.5/4Jawaharlal Nehru Technological University Hyderabad, India May 2012 completedBachelor of Technology in Computer Science and Engineering |
