Kabilan Subramanian is an experienced middleware architect and system administrator with 16 years in IT, specializing in middleware technologies and system administration across various industries. He possesses strong skills in multiple middleware platforms, configuration management, and DevOps practices, along with certifications in WebLogic administration. His professional background includes significant roles at organizations such as Experian, Citigroup, and Moody's Corporation, where he handled production support, migrations, and performance tuning for critical systems.

1. KABILAN SUBRAMANIAN Phone: 972 215 6990
Middleware Architect/Lead/Sr. Admin
PROFESSIONAL SUMMARY
 Around 16 years of IT experience Architect/Lead/Administration for middleware, Networking
and System Administration for BFSI, Telecom and Retail companies.
 Specialized in multiple middleware technologies, like, JBoss6, JBoss5.x, Oracle Fusion
middleware (SOA,OSB)11g, Weblogic 10g,9.x, 8.1, IBM WAS 7, WAS 6.1, Datapower
appliance, Webservers like Apache 2.2, Apache 2.4, IPlanet 7, IPlanet 6, IBM HTTP servers 7.
 Knowledge and understanding on programing skills of basic Java, Visual Basic, Visual Studio 6,
C++ along database query skills with products like Oracle 8, SQL server and MS Access.
 Working knowledge on ITIL V2/V3 model of service deliver, service support areas of service
level, Incident, Problem, Change, Release Management and Service desk.
 Knowledge on networking and wireless networking (A/B/G/N) devices like, Switches, Routers,
wireless routers, access points NAS etc.
 Knowledge on Load balancing, Proxy mechanism.
 Understanding on DevOps model, automation and some hands on skills with products like
Ansible and chef.
 Customer support and services skills over the phone and mails (support background)
 Team lead and team player skills with strong multitasking, problem solving and analytical skills.
 Excellent communications and user interface skills, both written and verbal at all levels.
EDUCATION
 Bachelor of Science – Information Technology (B Sc. IT) Distance Education at MAHE, Manipal,
India (2002-08)
 Diploma in Electronics and Communication Engineering (DECE), DOTE Chennai, India(1995-98)
CERTIFICATIONS / COURSES
 Oracle Weblogic 10g Certified System Administrator
 Oracle Weblogic 8.1 Certified System Administrator
 Higher Diploma in Software Engineering (HDSE) (1998-00)
 Diploma in Consumer Electronics & Telecom Tech(DCTT) (1998-99)
COMPETENCIES
 Excellent communication, presentation and management skills.
 Good team player.
 Organized and well-structured at work.
 Independent and self-motivated.
 Committed to deadlines and schedules.
 Honest, Sincere and a Hard Worker with a high level of Integrity.

2. TECHNICAL SKILLS
Middleware Technologies:
 Apps – JBoss 56, JBoss 5.1, Weblogic 12c, 11g, 10g, 9.x, 8.1, 7.0, Oracle Fusion middleware(SOA/OSB
admin), Websphere WAS 7.0 ND, WAS 6.1
 Webs –Apache 2.x, Sunone (IPlanet) 7, 6.x, IBM HTTP 7.x
 Device – Datapower Service gateway XG45
 SSO Siteminder/RSA Webagent configuration
 SSL Certificate request, renewal and setup on various devices. Tools like Openssl, keytool, IBMs
Ikeyman etc. This includes Administration of certs on Entrust cloud.
OS:
Linux (SUSE, RHEL), AIX, Solaris (10, 9, 8), HP-Unix, Windows Servers (2000-2008).
VM: VMware, Oracle VM
Cloud services: Platform as Service (PaaS) on Amazon web services (AWS) and OpenShift.
Networking (SOHO based):
Basic networking like configuration of ROUTERS, SWITCHES, Wireless routers, Access Points, Bridges,
VPN, NAS.
Other Technologies (Programming and configuration):
C, C++, VB, VC++, Java, Oracle Database SQL server, Crystal reports.
Management Skills: Project Management, BFSI Compliances, Vulnerability Management, ITIL foundation
PROFESSIONAL EXPERIENCE:
System Engineer Expert - Middleware
Experian, TX July 2015 – till date
Working as System Engineer expert for middleware technologies in Experian. Performing migration of
Weblogic to JBoss and IPlanet to Apache. The other day to day activities include setup, patching and
support of JBoss, Apache. Certificate management and configuration for various business requirement.
Troubleshoot for different business. 24/7 support roles to cover major production incidents.
Responsibilities:
 JBoss, Apache Setup, Upgrade and any path patch or related configuration
 24x7 support for production environment for any incident or nightly configuration tasks.
 Patch co-ordination for the middleware servers with UNIX administration team and associated
business.
 Performing end to end SSL certificate tasks and Entrust certificate administration.
 Supporting and troubleshooting Datapower, Weblogic SOA servers, and Tomcat servers.
 Data source configuration and troubleshooting
 SSO agent configuration on Apache/IPlanet webservers and troubleshooting
 Working on vulnerability issues reported for SSL, OS, Web/App servers

3. Environment:
JBoss 6, JBoss 5.1, Datapower XG45, Weblogic 11g, Apache 2.x, IPlanet 7, Suse Linux, Solaris.
Level 3 Administrator - Middleware
Citigroup, TX Sep 2014-July 2015
As Weblogic Administrator for Citi Mexico project (BANAMEX). Performed migration of application
servers (11g, HP UNIX) from existing Data center to new a data centers (12c RHEL). This includes few
other tasks like cert configuration, SSO on IPlanet webservers, testing and monitoring script.
Responsibilities:
 Weblogic 12c server setup and migration in a clustered environment across two data centers in
Mexico
 Configuring the WTC (Tuxedo) services on Weblogic servers.
 Performing testing for the servers related to infrastructure.
 Performing end to end SSL certificate tasks, from requesting, generating certs, implementing and
testing them.
 Troubleshooting and fixing cert related issues for Weblogic 12c
 Performing server troubleshooting and fixing issues based on escalation from L2 support.
 Migrated and fixed Monitoring related scripts from HP UNIX based environment to Linux servers,
which performs tasks like server status, thread dumps, error logs scanning and uploading to ftp server
etc.
 Node manager configuration and trouble shooting.
 Datasource configuration and troubleshooting
 Weblogic Patching and performance tuning
 SSO configuration on IPlanet webservers and troubleshooting
 Fixing Citi standard vulnerability issues reported for webserver, Appserver and windows registry
level changes.
Environment:
Weblogic 12c, IPlanet webserver, IIS webservers, SSO agent, Red Hat Linux, HP Unix, Windows
2008 server.
Architect – Middleware (Specialist)
Moody’s corporation, NY Dec 2013- Sep 2014
Worked as Middleware Architect for Moody’s Corporation. Worked on a project called “Operational
Resiliency” which targets the critical application with eyes on glass and work towards high availability
migration.
Responsibilities:
 “Resiliency project” targeting the critical application with eyes on glass and high availability migration.
 Building and managing specific application Environments part of eCommerce infrastructure project
delivery.
 Production support (24 X 7) for around 100+ applications.

4.  Installation, configuration, administration and performance tuning on JBoss 5.1 EAS, WAS ND,
Weblogic OCM (Content Management), Apache Webservers.
 JBoss EAS Installation, configuration, administration, performance tuning and patching.
 WebSphere Application Server ND 7 configuration, administration, performance tuning.
 Weblogic Application server /OCM Installation, configuration, HA setup, administration, performance
tuning upgrades, patches.
 Worked on Operating Systems like Linux and Windows based servers for the middleware related
products.
 Application performance monitoring and tuning using Manage Engine [I.T. 360].
 Managed the environment using Shell, WLST scripting.
 Automating the Application environment Creation and Decommission of Servers for Datacenter
Migration.
Environment:
JBoss 5.1 EAS, Weblogic 11g, Websphere 8.5, 7.0 ND, 6.1, Websphere ICS 5, IBM HTTP Server 7.0
on RHEL, AIX, Windows 2003
Administrator - Middleware
Citigroup (mortgage), TX Jul 2012 – Dec 2013
Websphere administrator for Citi mortgage (Real Estate and lending). Part of team of 12 Members,
responsible for 24X7 support for mortgage based Enterprise applications. Setting up new environment with
web/enterprise tier and maintain the application. CitiMortgage is one of the major external site with high
visibility and sensitive. Few other day to day activities include plugin config of Tibco, JMS, and Datasources
configuration. We also maintained couple of WAS Portal, MQ 5.x, Cognos, Filenet servers. SSO (Single Sign
On) integration and managing few IBM HTTP server were also part of our job roles.
Responsibilities:
 Websphere(8.5, 7.0 ND, 6.1) administration, Weblogic 9.x, 10.x, MQ Administration for DEV, UAT,
LOAD, PROD and COB
 Configure and setup new environment
 Troubleshoot and monitoring
 Apply necessary patches whenever required
 JDBC, JMS & other resource configuration.
 Co-ordinate with Unix and DB team for necessary downtime and uptime during maintenance
 Help developers configure, JMS, Datasources and other related configuration
 Deploy the J2EE application in the form of ear, war, rar etc. as and when required
 Configure and handle IPlanet, IIS & IBM HTTP webservers
 CA Certificate installation and renewals.
 Single Sign on (SSO) Siteminder Webagent 6.x configuration.
 Have performed end to end Migration of environment, including IPlanet to HTTP server and WAS
6.1 to 7.0 ND.
 Incident management, Problem management
 Using WLST, basic shell based scripting for activities like, start/stop, configure or monitor
application server.
Environment:

5. Weblogic 9.x, 10.x, Websphere 8.5, 7.0 ND, 6.1, IBM HTTP Server 7.0 on RHEL, AIX, IIS 7.0 on
Windows 2008
Administrator - OSB/Weblogic
Nestle, India Dec 2011 – Jul 2012
Worked as SOA (OSB) Administration. Responsible for the DEV/TEST/PRE/PROD environments that were
dedicated for Nestle’s “Nespresso” product. Performing various day to day activities like Setup/Domain
creation, configuration, and deployments. Troubleshooting, and tuning related activities, extensively on JMS,
Datasources, Adapter Configuration, troubleshooting. Also have done hands on with OEM and OEPE
installation and configuration.
Responsibilities:
 Weblogic and OSB administration for 4 environment like DEV, UAT, PRE PROD and PROD
 Configure and setup new environment
 SB Console configuration and mapping
 Troubleshoot and monitoring
 Adapter trouble shooting.
 Apply necessary patches whenever required
 Co-ordinate with Unix and DB team for necessary downtime and uptime during maintenance
 Help developers configure, JMS, Datasources and other related configuration
 Deploy the J2EE application in the form of ear, war, rar etc as and when required
 Generate report and plan for any COB activities
 Set up Business Architecture, Application Architecture and Technology architecture.
 Led and contributed to the architectural review processes
 Participated for SOA governance
 Helped using architectural patterns, J2EE patterns and Application Integration patterns.
 Architected and designed Health Monitoring System that checks the health of all the services in the
SOA environment.
Environment:
Oracle Fusion Middleware 11g, IPlanet 6 sp12 on RHEL
VTM Life Cycle Manager
Citigroup, TX Feb 2011- Nov 2011
Worked as VTM Life Cycle Manager (LCM). The major responsibility was to Manage and help different
team across Citi global for security related vulnerability patching and remediation. The products include
Websphere, Weblogic, IPlanet, IIS, Apache, JRun, TIBCO, Websphere MQ, Sun JDK etc.
Responsibilities:
 Provide support to Citi’s global technology managers on all vulnerability related issues for
middleware components. E.g. IBM, Oracle, Microsoft & other related products.
 Maintain vulnerability records in Citi’s golden source system the Vulnerability & Threat
Management Automation Systems (VTMAS)
 Coordinate VTM Forums with regional teams to collect key updates on remediation projects
 Escalate issues and delays in the VTM process to management

6. Environment:
Information security, Vulnerability assessments, Citi compliance and process oriented.
Technical Lead
Citigroup, India Feb 2008- Feb 2011
Worked for a Citibank NA project called “Webbank” Application Support Team. I was responsible for
managing a Team of 11. They were responsible for “web hosting”. We provided 16X7 support for our client
and had around 1000+ Apps across DEV/STG/PROD and COB servers.
Responsibilities:
 Project Management
 Work allocation, shift schedule & escalations
 Provide BAU support, Incident management, Problem management
 Setting up environment (Weblogic IPlanet, IIS, JRun)
 Deploy the J2EE application in the form of ear, war, rar etc
 Siteminder agent 6.x (SSO) configuration
 Making necessary DNS alias entries using Big IP (QIP)
 Cert installations (CA) requests and managing them for the PROD servers
 Log reviewing and reporting for auditing purposes
 Decommissioning of application which are outdated
 Involve in Client Meetings, Resource management, training new resources, etc.
 Thread dump & analysis.
Environment:
Weblogic 8.1, 9.x, 10g, IPlanet (sows) 6 sp9, sp12, JRun 4 on Solaris 10, RHEL.
System Analyst - Consultant
Infosys, India. Jun 2007 – Jan 2008
Worked for Infosys Technologies, as consultant and was performing Weblogic Support / Admin from
offshore to a Belgium company “Proximus/ Belgacom Mobile”, a telecom major.
Responsibilities:
 Server Maintenance – 3 Production Domains with 40 Clusters (4 Managed servers each) and 2 Test
domains (All running on Weblogic 8.1 SP4)
 Deploy the J2EE application in the form of ear, war, rar etc
 Performance Tuning and related
 Domain/Cluster/Server creation along Connection Pool creation and deployments.
 Analyzing the logs
 Thread dumps and thread dump analysis.
 Capacity planning
 Maintaining Sunone (IPlanet) webservers, and supporting few test environments running on
Weblogic 9.0 and Websphere 8.1.
 Problem & Incident Management.
 BMC Patrolling, Scheduler & management.
Environment:

7. Weblogic 8.1, 9.x on Solaris 9 & 10.
Analyst Programming
Metasolv Oracle Corporation, India. Jan 2006 – Jun 2007
Worked for Metasolv (Oracle Corporation through Syntel Ltd.,Was responsible for Weblogic support to
various clients. There were global wide customer who used this product and to name few majors like ATT,
Verizon, CenturyTel, Timewaner.
Responsibilities:
 Providing production support for the major Telecom Giants related to installation and functionality of
the Application server running on Weblogic 8.1 Weblogic 7.0, Novell Extend 5.1 and Silverstream,
JMS, Plugin configuration TIBCO etc.
 Deploy the J2EE application in the form of ear, war, rar etc
 Help customer to setup a new environment with Single/Cluster server based on their requirement
 Troubleshooting and providing workaround, if not debug with the help of thread dumps and if found
issue with the code level, then move the issue to development for Fix (Enhancement Fix)
 Applying the Enhancements / Fixes and upgrades.
 Problem and Incident management using IBM Clear case.
 Shell scripting for monitoring and other administration tasks.
 Thread dump and analysis
 Worked as on site coordinator from client place in Plano, Texas, US.
Environment:
Weblogic 8.1, 9.x, Novell extend 5.1, Silverstream 2 on Solaris 9, IBM AIX, HP Unix.
Other Work experiences:
Escalation Lead & Trainer
Linksys, India. Jul 2004 – Jan 2006
SOHO Routers, Switches & the Wireless based Networking Devices (802.11 A, B, G and N) LAN, VLAN,
Bridges, AP, VPN Routers, Network Storage devices, etc.
System Admin Dec 2003 – Jun 2004
INET Computers, India.
System Admin, Assembling PCs, Hardware / OS problems.
System Admin 2001 – 2003
ISEXFASHIONS PVT. Ltd, India.
Managing the customized ERP Package for Garment Industry, the software is running on Windows 2000
Server. (By supervising & reporting the bugs, requirement & changes as required by the end users to The
Technology Dept.)