Tariq Khan

Experience

• 

  KPIT

  Jun 2008 - Sept 2010

  Weblogic Adminstrator

  Working as a Senior Engineer for “Oracle Weblogic Fusion Middleware.”Work involves configuring Weblogic domains, clusters, troubleshooting the issues of Weblogic application server and the deployed Java/J2EE applications in production environment. Good communication skills being an important aspect of the job profile. Handling critical severity 1 issues in the least time possible for the customer.Working on Weblogic versions: 8.x, 9.x, 10.xAreas of Focus : • JVM Tuning – Sun JDK OOM crash issues troubleshooting and tuning.• JRockit- Monitoring using Mission control, Analyzing JRA recordings, • Tuning JRockit.• Weblogic utilities- Monitoring and editing WebLogic domains via utilities like weblogic.admin and WLST, • Cluster configuration and tuning.• Proxy configuration • Severity 1 issue handling. • Weblogic Upgrade.SSL: • Cipher Suite Concepts. • Configuration of Private keys, digital certificates, and trusted certificate. • One Way & Two way SSL. • Obtaining Private Keys, Digital Certificates, and Trusted Certificate Authorities. • Using KEYTOOL & Cert gen Utilities. • Chaining of Certificates. • Inter-conversion of certificates in various formats. • Self signing the Certificates. • Keystore creation. • SSO using SAML & Kerberos. • Authentication /Authorization concepts. • Configuring SSL, generating x509 Certificates, Keytool, 2 way SSL, Sample codes to be used with SSL and stand alone clients.LDAP: • Active Directory Configuration with Application servers. • Iplanet Directory Server Configuration with Application servers WEBSERVER: • Apache websever configuration with Application server (Load balancing) • IIS configuration with Application server (Load balancing). Show less

• 

  Amdocs

  Oct 2010 - Jan 2013

  AT&T is the largest provider of local and long distance telephone services in the United States, and also sells digital subscriber line Internet access and digital television service. AT&T is the second largest provider of wireless service in the United States, with over 85.1 million wireless customers and more than 150 million total customers .Telegence API is a billing system used by AT&T for processing it's mobile phone bills .Telegence API is a JAVA/J2EE based application deployed on ORACLE - Weblogic Application Server (9.2 MP2) There are many systems/Subsystems attached to the Telegence API ,primarily TUXEDOS .Telegence API Weblogic servers connect to tuxedos using WTC as well as JOLT pools .Telegence API is a gateway for any application to reach the internal core of the billing system .Roles & Responsibilities:1. Production & QA Environment Building/Validating.2. LAB environment setup/validation.3. Code Refresh of QA, Production & LABS.4. Monitoring/validation of markets (Using Introscope - WLDF)5. SAPI monitoring.6. Running of API servers if the boxes are in maintenances.7. Creation of datasheets/documents for production & QA.8. WR:-TTrack, SOD, Webtrax. (Ticket Monitoring)9. ACSI Technical Discussions.10. MCM/database/Box maintenances monitoring/validation.11. Deployment of applications.12. WLS/JVM Performance Tuning.13. WLS Cluster & Load Balancer (Hardware) configuration.14. Thread Dump analysis.15. Writing scripts (JMX & WLST) as per requirements.16. Building DR (Disaster recovery) Supplement Production Environments and validating them Show less AT&T is the largest provider of local and long distance telephone services in the United States, and also sells digital subscriber line Internet access and digital television service. AT&T is the second largest provider of wireless service in the United States, with over 85.1 million wireless customers and more than 150 million total customers .Telegence API is a billing system used by AT&T for processing it's mobile phone bills .Telegence API is a JAVA/J2EE based application deployed on ORACLE - Weblogic Application Server (9.2 MP2) There are many systems/Subsystems attached to the Telegence API ,primarily TUXEDOS .Telegence API Weblogic servers connect to tuxedos using WTC as well as JOLT pools .Telegence API is a gateway for any application to reach the internal core of the billing system Show less

  • Senior Subject Matter Expert (ORACLE WEBLOGIC SERVER)

    Oct 2010 - Jan 2013

  • Senior Subject Matter Expert

    Oct 2010 - Jan 2013
• 

  Cognizant

  Jan 2013 - Jun 2015

  Technical Lead

  Managing java apps over weblogic servers for the project of a leading banking firm.

• 

  Atos

  Jun 2015 - Dec 2018

  Consultant
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  Wipro

  Jan 2019 - now

  Lead Administrator

  More than 10 years of Middle ware Experience along with managing teams of resources to provide satisfaction and result driven value to the business. Knowledge for products ranging from the top tiers of Application Servers/Web servers and other products along the family for Oracle;IBM;Red Hat.