Nithun Marka

Company Overview: Loan Product Advisor enables you to assess a loan's overall underwriting risk against Freddie Mac credit requirements.

• Provided production support by actively monitoring system performance and addressing incidents, ensuring minimal downtime and efficient resolution for 24/7 available under writing FM applications.
• Managed incident triage for critical production issues, facilitating communication across technical and non-technical teams to ensure timely incident resolution.
• Coordinated and led incident response calls, working cross-functionally to analyze root causes and restore services with minimal disruption to the business.
• Monitored system health using industry-standard tools such as Dynatrace, ESS, and Splunk, responding promptly to any alerts or system anomalies.
• Performed proactive system health checks and alert configuration to identify potential issues before they impacted production environments.
• Regularly reviewed application logs and performance metrics to troubleshoot and optimize system performance in both cloud and on-premise environments.
• Provided expert-level troubleshooting for application related issues, Unix/Linux servers, database systems and cloud-based infrastructures (AWS).
• Assisted in resolving application-level issues by analyzing system logs, network traffic, and database queries to pinpoint underlying problems.
• Delivered technical support for software and hardware components, ensuring alignment with internal SLAs and minimizing service interruptions.
• Managed cloud-based infrastructure, including monitoring and troubleshooting AWS Cloud services, ensuring system stability and reliability.
• Assisted in deploying and configuring new software and hardware solutions, optimizing cloud and on-premise environments for better resource allocation.
• Acted as a liaison between the operations team, management, and other stakeholders during high-priority incidents, keeping all parties informed with real-time updates.
• Facilitated MS-Teams calls and virtual meetings to discuss incident details, resolution strategies, and business impact, ensuring seamless communication during incidents.
• Supported change control processes by coordinating and validating post-deployment testing, ensuring system stability and performance after major changes.
• Created Splunk dashboards on all UW apps for E2E business monitoring provides availability of the applications helps in identifying potential issues when it drops.
• Created numerous ESS alerts one are missed by developments teams, we analyze code and suggest what helps in identifying issue.
• Automated many on demand business reports there is no utility or applications to pull report there is a common Jenkins which we built to run on demand reports.
• Automated pulling PDR reports for valuation team, BACE application won’t support downloading customer PDR PDF reports.
• Automated service account password rotations – to receive email every day to show when accounts are close to expiry and also rotation – had many issues around password rotations this report helps to correlate on an incident.
• Loan Product Advisor enables you to assess a loan's overall underwriting risk against Freddie Mac credit requirements.

• Company Overview: Project named Corvette falls under Experian Consumer Services (ECS) division which provides different services to like Offers, Subscriptions, Fulfilment, Billing, Discounts etc.. for customers to create subscriptions. All these services work as micro services and interact with each other.
• Developed new Internal REST API Routes for Offers, Billing and Fulfilment, Fulfillment sweeper micro services as JSON input/output.
• Developed new Adapter classes for interaction across different micro services.
• Published events to AWS SQS and subscribe to SQS events by Event Listener.
• Reading/writing data from/to Amazon DynamoDB as required by micro services.
• Worked with Amazon Lambda to schedule an event.
• Worked with Java 1.8 lambda expressions.
• Monitor and administer the automated build and continuous integration process to ensure correct build execution and facilitate resolution of build failures.
• Working in Agile/Scrum methodology attending daily stand ups.
• Did performance testing on all the services by observing CPU Utilization and Memory Utilization Metrics in ECS and adjusting the CPU and memory limits on observations.
• Worked in getting Google Sales Report from Google Cloud Storage.
• Worked in getting Apple Sales Report using Auto Ingestion Tool.
• Worked on writing data to Amazon S3 that stores reports.
• Worked on Amazon SNS for publishing Topics.
• Log4j is used for logging.
• Wrote Groovy Test cases for performing unit testing.
• Worked on Automation scripts for Fulfilment services.
• Used Gherkin and Cucumber Frame works to write automation scripts.
• Worked on Python Scripts to read records from CSV file and get subscriptions data from DynamoDB for testing Cache.
• Used GIT repository for code branching/versioning activities.
• The project named Corvette falls under the Experian Consumer Services (ECS) division which provides different services to like Offers, Subscriptions, Fulfilment, Billing, Discounts etc.. for the customers to create subscriptions. All these services work as micro services and interact with each other.

• Company Overview: The application functionality was extended by providing User Provisioning to help organizations streamline user lifecycle processes more quickly, more efficiently and more securely. It also provides Easy Pay for members to purchase without using CC.
• Automation of Processing Business Flows using Business Process Management Tool Camunda.
• Designed BPMN Diagram for process engine to read and go through business flow.
• Developed different SOAP Web Services using WSDL.
• Interacted with external services to get the user information making web service SOAP calls.
• Used XML, WSDL, and SOAP Web Services for communicating data between different applications.
• Developing re-usable web services using SOAP, XML, WSDL, XML Schema.
• Used XSL/XSLT for transforming and displaying data.
• Created Database Tables, Sequences and wrote hibernate mapping files and POJO class.
• Used Hibernate annotations to persist the data into Oracle Database.
• Extensively used Hibernate concepts such as inheritance, lazy loading, dirty bit checking, optimistic locking, and transactions.
• Developed PL/SQL trigger that fires on Delete/Update table and calls REST service.
• Implemented Message Queues using ActiveMQ and JMS.
• Used Log4j and commons-logging frameworks for logging the application flow.
• Developed unit test cases and functional test cases using Junit.
• Migrating SVN projects to GIT.
• Used GIT, SVN as version control system.
• SOAP UI is used extensively to test the middleware components independently.
• Used Jira for bug tracking and project management.
• Worked with QA team for testing and resolving defects.
• Created build and deployment plans for QA, TRN and PRD environments using Bamboo.
• Leading DevOps and AppOps for QA, TRN and PRD deployments.
• The application functionality was extended by providing User Provisioning to help organizations streamline user lifecycle processes more quickly, more efficiently and more securely. It also provides Easy Pay for members to purchase without using CC.

• Company Overview: Pricing Manager Application (PMA) is the web-based front end for Price Definition. It provides the functionality to enter, manipulate, save, and retrieve the pricing grids.
• Involved in complete life cycle of software development including designing, developing, testing, and deployment of application.
• Setting up an environment, configuring an application and deployment in IBM Web Sphere7 Application Server.
• Designed and developed UML diagrams using Rational Rose.
• Implemented MVC for designing and implementing the UI Layer for the application.
• Created various pages using JSF/ PrimeFaces.
• Created views using components of PrimeFaces in XHTML files and configured JSF framework.
• Used Prime faces as a JSF extension libraries for rich components such as Accordion, Calendar, Data Table, Panel and various components.
• Created many DHTML pages within a single view.
• Used JSF Validation and Custom tags, Backing beans.
• Visual front end that was developed using JSF/PrimeFaces for performing bulk operations like insert, update and delete operations and the results would be published in this front-end application for viewing, modifying and saving.
• In addition, the front end also had capabilities to which could be exported as XLS reports for the data saved.
• Wrote all client-side validations using JavaScript.
• Developed server-side services using Java (multithreading, collections).
• Used Hibernate for mapping java objects to the relational database in hbm.xml file.
• EJB 3.0, JPA is used to interact with Database.
• Worked with executed unit test cases by using JUNIT for accuracy of code and logging with log4j.
• Designed, developed and implemented document transformation applications using XML tool.
• Used DOM parsing methodology for serializing and parsing the XML request and response.
• Used ALM for Bug tracking as well as various User Stories based on Release and Sprint Plan.
• Used IBM Clear case as version control system.
• Pricing Manager Application (PMA) is the web-based front end for Price Definition. It provides the functionality to enter, manipulate, save, and retrieve the pricing grids.

• Company Overview: CASHplus is a cash management solution, leveraging the most advanced technologies, the most efficient system architecture and the most progressive functionality to provide cash management services for an ever-widening global marketplace. CASH plus is a multi-lingual, multi-currency product that offers a comprehensive set of Internet banking services through a full range of delivery channels.
• CASHplus is a cash management solution, leveraging most advanced technologies, most efficient system architecture and the most progressive functionality to provide cash management services for an ever-widening global marketplace. CASH plus is a multi-lingual, multi-currency product that offers a comprehensive set of Internet banking services through a full range of delivery channels.