Sravankumar Nimma
Chennai
Summary
Experienced Middleware Admin with 12 years and 8 months of total experience, including 8 years specializing in WebSphere Application Server. Seeking a challenging position in the field of middleware to continue advancing as an Admin. Bring a wealth of expertise and knowledge to effectively manage and optimize middleware systems for career growth opportunities.
Overview
1
1
Certification
Work History
Middleware Admin
Kyndryl India Pvt Ltd (IBM India Pvt Ltd)
- Deployed various profiles which have EAR, JAR mappings to various environments including Component Integration testing boxes, Staging, QA and Prod environments and ensuring environment readiness for testing after each latest deploys
- Configuration of WebSphere Application Server resources like Data Sources, JDBC, JNDI and Connection Pooling in order to connect to the databases
- Configured and Enabled the Global Security System WAS Administration for console users and console groups
- Worked on Administration and troubleshooting of Apache Tomcat
- Have involved in Tomcat Deployments and configuration like data base configurations, JVM Ports update in server.xml file
- Installed and configured the WebSphere proxy for remote web servers
- Have worked in certificate updates in Tomcat like updating trust store where third party certificates are stored
- Participated in Critical issues which would occur in Production environment which are causing revenue impact to business and Worked on various tickets (problem, incident and change management)
- Working with multiple team’s (Network Team, Firewall Team, MQ Team, DBA Team and UNIX team) to solve critical issues
- Installation of certificates for IIS server (Windows ) , App pool restarts if needed , executing the scripts of Deployment for IIS servers Have worked on troubleshooting of memory, disk & performance issues for the applications
- Worked on the complete diagnose of logs and Event logs if there is any issues with IIS servers.
Linux Technical Administrator
Kyndryl India Pvt Ltd (IBM India Pvt Ltd)
- Installing and Managing Linux Servers standalone, Blade
- Responsible for managing different environments PROD, Stage, QA & DEV
- Also need to taking care of HO-AIX servers, checking the hardware and OS related issues as well
- Coordinating with development team during load tests and capturing the system performance results and analyze them
- Adding Start-up and shutdown Scripts for servers as per the requirement from application teams and supporting the NFS configuration for sharing the Files as per the application requirement
- Troubleshooting day to day issues, such as login problems, network issues, permission issues
- Creation of File systems on Virtual and physical servers as per the requirement Volume Group, import & export, mirroring logical volume and File systems
- Raising H/W and software vendor case for identifying issues by sending snaps
- Created scripts to take OS backups, creating users, and environment specific scripts to negate manual work
- Responsible for various tasks of User Administration of creating users, manage user permissions
- Understanding Integration of Linux servers with Active directory and working with User Administration tasks System recovery and finding root cause for server crashes
- Maintains system performance by performing system monitoring and analysis
- Installation and configuration of SMTP (send mail, Postfix), NFS, Troubleshoot Read Only File system
- System Unresponsive Regular Updates to Clients and Issue Escalations as per SLA’s defined
- ITSM Ticketing system to solve the incidents
- Attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment
- Provided 24x7 on call production support.
Technology Services Engineer III
Walmart Global Tech India
- Current
- Diagnosing and resolving the application performance bottle necks within the WebSphere servers and preparing RCA documentation
- Installation & Deployment of Enterprise Applications in Production, Acceptance and Test environment Maintaining the environment with applying latest fix pack as per the release
- Applied fix packs for WebSphere application server including IHS and Plugins, application server
- Experienced in LDAP Configuration with WebSphere admin console as part of global security
- I have done for all three stages in test, QA, Production environments which is one of the major tasks in the project at that time
- Managing and Monitoring the JVM performance by Web Sphere Heap Size, Garbage Collection & Thread & Heap Dumps
- Configuring and Renewed SSL Certificates on application server level, IIS, webservers levels
- Resolved high priority problem tickets within time frame and analyzed for root causes as part of problem Management process
- Documented necessary procedures and production issues for my team reference in future
- Implemented workload management (WLM) for failover using a horizontal, vertical and a combination of horizontal and vertical clustering
- Configured Web Sphere resources such as JDBC Providers, Data Sources and Connection Pooling
- Create/configure web-instances; generate/propagate plug-ins
- Responsible for incident Management, Change Management Problem Management Attending the Daily PDM Call to Discuss the High priority Incidents which we Handled for past 24Hrs
- Attending weekly Connect call with Technology L3 Connect calls.
Education
Skills
- Network Troubleshooting
- Training and mentoring
- System monitoring
- Incident Management
- Cloud Middleware Management
- Web Services Management
- Application Server Administration
- Database Connectivity
Certification
Graduated from Smarter Blue Program conducted by IBM for L1-L2 level.
Languages
Telugu
English
Hindi
Itacquaintance
WebSphere ND V6.x, 7.x, 8.x, Tomcat, IIS Windows servers, IBM HTTP Server, Apache Server, UNIX, LINUX, AIX, Windows, ORACLE, DB2, Service-now, Putty, WinSCP
Professional Highlights
- Have good work experience with WebSphere Application Server System Installation, Configuration, Deployment, Administration and Production Support on platforms like AIX, Linux and Windows NT environment with different versions of WebSphere Application Server like V6.x, V7.x, and V8.5, and Apache Tomcat, and involved in the issues in IBM HTTP Server and PLUGIN on different platforms.
- Provided extensive support in code deploy, change management, and application-level troubleshooting for the Dev, Test, Pre-Prod & Production environment.
- Experienced in Administering, Deploying J2EE applications on WAS V6.x, V7.x, and V8.5 versions using Admin console and other third-party tools.
- Involved in Configuring WebSphere resources such as JDBC Provider, Data Sources and Connection Pooling to connect to ORACLE, and DB2 database. Created the Connection factory (QCF Name, JNDI name, Host Name, Qmgr name, Port Number, Channel Name).
- Experienced in implementing SSL Configurations for the servers with Certification Authority.
- Experienced in Collection of JVM Statistics, Garbage Collection data for monitoring the heap memory and generating Heap dumps &Thread dumps and in using troubleshooting tools to analyze logs and dumps.
- Experience in applying Refresh packs, Fix packs, I-Fix/E-Fix for all versions of WebSphere application server and different flavors of Web Servers using Update Installer and in silent mode.
- Have a good experience in Apache and Tomcat Administration. Worked on Tomcat Deployments and configuration like data base configurations, JVM Ports update in server.xml file. manually, Fixpack installation, Backup and restore process.
- Provided support in a demanding 24/7 Production Environment.
Personal Information
- Date of Birth: 01/26/87
- Marital Status: Married
Timeline
Middleware Admin
Kyndryl India Pvt Ltd (IBM India Pvt Ltd)
Linux Technical Administrator
Kyndryl India Pvt Ltd (IBM India Pvt Ltd)
Technology Services Engineer III
Walmart Global Tech India
- Current
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