EXPERIENCE SUMMARY:

• Around 9 years of Total IT experience in Deploying, Supporting, Monitoring and Maintaining applications in LINUX and Windows in both PRODUCTION/Non - PRODUCTION environments (Dev, QA and STAGE).
• Supported systems and applications present in multiple geographical locations and followed sun supporting model.
• Experienced in handling wide range of application servers such as WEBLOGIC, JBOSS, APACHE.
• Specialized in trouble shooting Application Server (JBOSS/WEBLOGIC) side issues such as JVM Memory tuning, CPU and Disk Usage issues and DB Issues such as deadlocks, failover messages.
• Specialized in trouble shooting memory issues on Application Server by taking Thread/Heap dumps, analyzing the same using Heap Dump Analyzer, Thread Dump Analyzer and recommending appropriate memory tuning parameters.
• Experienced in deploying, configuring and Maintaining 3rd party Applications such as Microsoft Fast Search Engine, MySQL, Tomcat and Monitoring tools such as Nagios, SCOM.Experienced in handling Production Outage, taking corrective actions in restoring services, communicating to the effected customers, Performing Root Cause Analysis and documenting the same.
• Experienced in Managing Linux Servers such as Maintaining User Access Controls, Starting and Stopping required services and automating the same, Disk allocation, Maintaining NFS mounts.
• Worked with backend server teams (such as DELL, HP) in case of any hardware issues, Updating OS patches, or NFS maintenance, preparing road map for maintenance and implementing the same.
• Good Experience in shell scripting and automating the same using Crontab.
• Handled Day to Day Operations for Client Applications, System Monitoring and automating the same using Shell Scripts.
• Experienced in installing and configuring MySQL for using at as DataWare House engine that provides data about day to day system usage, migrated existing content platform from XML file into MYSQL DB.
• Experienced in using multiple Monitoring tools such as Systems Centre for Operations and Management, Nagios and Application Monitors such as Gomez, Pingdom.
• Deployed and Maintained check points for monitoring Applications, Application Critical Process, and Physical Servers using Systems Center for Operations Manager and standardizing the threshold values across multiple platforms.
• Worked with Business/Development teams for estimating system requirements for upcoming applications and implementing the same.
• Analyzing the logs of both Application (Client application), Server logs (both JBOSS, Linux), SQL Server logs and escalating to Development teams via JIRA
• Handled DOS attacks by analyzing APACHE logs and writing APACHE rewrite rules for stopping traffic at Web Server layer to prevent reaching Application Server.
• Experienced in using various kind of network Traffic capturing tools such as FIDDLER, Wireshark for trouble shooting application accessibility issues on client side.
• Having experience in handling projects in onsite, offsite, onsite-offshore model
• Provided On-call Support as required.
• Experienced in Writing Complex SQL queries using JOINS, Temporary tables.
• A Team Player with excellent communication, analytical, verbal and writing skills.

TECHNICAL SKILLS:

Linux Versions: RHEL 4, 5 and 6, Cent OS 6, Ubuntu 10, 12, Solaris 8/9

Application Servers: JBOSS, Weblogic 8/10, Apache, Tomcat

Hardware: HP Proliant Servers, HP Blade Servers, Dell T410

Databases: MySQL 5.1, Microsoft SQL Server 2005/2008R2, Oracle

Version Controller: GIT, CVS

Deployment Tools: Puppet

Search Engine Software: Microsoft FAST ESP 4.3, 5.1.

Monitoring Tools: Systems Centre for Operations Manager 2008/2012, Nagios

Networking: TCP/IP settings, FIDDLER, Wireshark

Languages: Java

Ticketing System: Star Ticketing System, Service Desk Plus, JIRA, Confluence

Windows Operating Systems: 2003, 2008, 2012 Servers, Windows XP, Vista, Windows 7.

PROFESSIONAL EXPERIENCE:

Confidential

Dev OPS Engineer/ Linux System Administrator

Responsibilities:

• Installing, configuring and maintenance of OS and Application Servers such as JBOSS, APACHE on DEV, QA and Staging systems on Physical servers and VM's.
• Performing day to day system Maintenance and Monitoring Server parameters CPU, Memory, disk usage on the environments.
• Involved in planning, scheduling and Maintenance of multiple environments/Applications present in multiple Geographies such as APAC, EUROPE and North America.
• Analyzing logs from Application (client application) and Server logs files (such as JBOSS access logs) for any Application related error messages and escalating to DEV team using JIRA or Mantis.
• Preparing the road map, deploying upcoming releases in DEV, QA and STAGE environments and bench marking the same to estimate the time for deploying the same in PRODUCTION Environment.
• Assisting Performance engineering team in Performance tests by making/Roll backing changes in environments.
• Experienced in trouble shooting Java Memory tuning issues by taking heap & thread dumps, analyzing the same using Heap Dump analyzer and updating server start-up parameters.
• Successfully migrated existing content management system to MYSQL DB for supporting new Search platform, optimized migration by creating NFS mounts between old and new platforms, used temporary tables for migration into MYSQL.
• Identifying, creating scripts for taking backups of system critical data and restoring the same.
• Identifying deadlock issues in back-end DB Server (in MSSQL, MYSQL and ORACLE) and taking corrective actions by identifying the store procedure, killing the process and escalating to DEV further analysis using JIRA.
• Experienced in using deploying and configuring various tools (such as fakesmtp, dynatrace etc) used by DEV team for various POC's.
• Handled requests from various BU's as per the SLA agreement and ITIL standards.
• Configuring and Managing of ACL's, SSH and NFS Services required for end client application.
• Installed, configured and bench marked various monitoring parameters using various monitoring tools such as SCOM, Nagios.
• Monitoring Linux, JBOSS and Database Servers using SCOM, Nagios and taking corrective actions accordingly.
• Identifying DOS attacks by analyzing WEB server logs using the DWH tool and preventing the same using rewrite rules.
• Analyzing the Application performance from System logs, various 3rd monitoring tools such as GOMEZ and escalating to development team in case of latency caused due to Code issue via JIRA.
• Taking corrective actions in case of any production outages such as restoring services, notifying the end customers via Microsoft Share point, performing RCA and documenting the same for future .
• Experienced with various version controlling systems such as CVS, GIT and performed a POC to use puppet as configuration management tool in current application.
• Documenting standard Server/Application Monitoring procedures, maintenance activities using confluence.
• Experienced in writing SQL QUERIES on Data Ware housing DB for identifying any DOS attacks and blocking these requests at WEB Server layer.
• Working with Back-end DELL/HP team for applying various patches/updates on the OS platforms and make ensure that no functionality was broken due to dis updates.
• Preparing Daily, Weekly and Monthly server Usage reports.
• Providing on-call support for multiple applications.
• Raising Service tickets for back-end DELL team in case of any server side issues using Service Desk Plus, JIRA and STAR ticketing mechanism.

Environment: Windows SQL Server 2005/2008,Windows XP/Win 7, HP Blade Servers, Red Hat Linux Version 4, 5 and 6, JBOSS, MYSQL, Tomcat, SCOM,