KRIS RENGANATHAN

PH: 614-***-**** Email: acv3i3@r.postjobfree.com

Professional Summary

Certified Professional highly successful having more than 15 years of experience in System administration with expertise in conceptualization, planning, design, implementation, production support and maintenance in the following areas: (i) Linux (RHEL & Centos) Unix (Solaris, AIX) and windows Computing Environment facilitating, Client-Server applications – Hardware, Virtualization, Operating Systems and Systems Software. (ii) High availability environment with Veritas cluster to run Oracle Databases (iii) worked in demanding Financial and telecommunication environments requiring extremely high system availability in high-paced, high system load environment. (iv)Extensive knowledge of Business contingency planning, Disaster Recovery planning and Facility & Infrastructure Management, Information Security standards. (v) Excellent Team Player with strong interpersonal, communication, reliable, detail-oriented and multi-tasking. (vi) Developed and maintained Dev, QA and production systems in accordance to business requirements and Industry best practices. (vii) Sound people leadership and teambuilding skills (viii) Proven ability to quickly sift through a complex problem to identify root cause and to implement solutions for mission critical issues with very strict service level agreements. (SLA) & ITIL certified & Best associate Epsilon award

Areas of Expertise

RHEL, Sun & Microsoft Certified

Project, Team and System Management

Capacity Planning & Disaster Recovery

System Performance Monitoring

Technical Support & Training

Sun Jumpstart & Linux Kick start

Server security vulnerability scans and remediation by working on Nexpose Security Scanning Engine

Expertise in Implementation and Delivery life cycle process

Configuration & documentation

24 x 7 Production support experience

Patching and Satellite Server Updates

Hadoop server cluster HW management

Working Knowledge in Big data & AWS

Unix Security (VAS & KEON)

HP-SAS (Opsware) and Blade Logic

Oracle 10/11g/12c with ASM and RAC support

Data center migration &consolidation

TCP/IP, Ethernet and VMware (WKS)

Hitachi-SAN, NAS & Fusion IO Configuration and management on RHEL and ORACLE Linux servers

Good Experience with system

Hardening RHEL and Solaris

Off-shore Team Management

Change/Configuration Management

Operating Systems, Hardware & Software

RHEL (5,6,7) OEL (5,6) Oracle Solaris (10, and 11) AIX (5.3,6.1), VMware 5.1.1 & Rackspace virtualization for Big data and Hadoop environment

HP ProLiant, DELL R servers, Oracle Exadata, IBM Netezza, Oracle T and M series servers,

EMC & Hitachi storage systems (VSP, AMS, HUS) Netapps, Hnas and Qlogic HBAs.

Dream Mail server and SMTP Clients, Nexpose, Rapid7 Security Scanning, Tectia SFTP, IBM Connect Direct NDM, BMC Patrol/Best1 for Unix 6.5.20, LDAP and Centrify single-sign on

Database (MySQL, Oracle standalone and RAC 11g, 12c), Web development (Apache, WebLogic, WebSphere), Heat and CA change management ticketing systems,

Ansible, Opsware SAS 6.x -7.8.1 & Blade Logic.Solar wind & Vistara monitoring, Keon, VAS and E-trust security & Tivoli

Custom(in-house) and 3rd party security application deployment, Veritas NetBackup (6.5.1) with BMR, DNS, NFS, CDFS, OCFS, ACFS Samba support for the UNIX /Linux platform.

EPSILON, Irving, TX Feb 2012 – Till Date

STS Operations Team Lead (UNIX)

Worked as an operations lead responsible for Maintaining hardware and administering (Day today administrations) more than 4000+ servers and 1000+ VMs of different vendor flavours of HP, DELL, ORACLE &NETEZZA.

Quarterly patching, upgrading server firmware and bios with proper change management process. Negotiated and implemented a maintenance window for maintenance activities with different LOB for automated pre-scheduled patching events.

Provided 24 x7 production support to develop, update, support and maintain for key infrastructure services and subject matter expert in Linux and Unix systems for Epsilon’s DB (upgrade, ASM disk allocation, performance tuning) and APP (SSL Certificate &PGP installation, SFTP) environments.

Advised/Managed large/enterprise projects, like… Automation of existing Service applications, data & datacenter migrations, enterprise wide provisioning of servers across multiple platform and application rollouts, hardware refresh, OS conversion with the team of 15+ engineers/architects/developers, with respect to their LOB.

Fully Supported Bigdata, Hadoop and Casendra team for their code deployment,

maintain their HW (DELL R servers), patching (using ansible).

Network administration by maintaining proper network VLAN and subnet segmentation and troubleshooting various network related issues by using tools such as ping, netstat, traceroute, tcpdump,etc., to track the LLDP, NFS, VLAN, Subnet and gateway info

Configuration of VAS (Vintela Authentication Services) for SSO authentication with Active directory.

Have worked in close co-ordination with auditors for PCI & SOX compliance strategy implemented in OS, DB and Applications.

Lead a team, that are geographically dispersed and the single point of contact for P1 and P2 tickets and acted as a resource for colleagues with less experience and took on a lead role with regard to certain aspects of projects.

DYNAMEX, Dallas TX Nov 2010 – Feb 2012

Senior Systems Engineer (Consultant)

Responsible for approximately 200 Enterprise Linux servers, which act as the platform for Oracle Database and Financials applications, Dynamex websites as well as several other Tomcat/J2EE servers to name a few. These responsibilities include engineering and supporting Clarion storage systems utilizing Fiber Channel, utilizing F5 load balancers, and VMware-based virtualized Linux servers.

Worked to consolidate as well as innovated systems, working to eliminate all single points of failure in our current architecture includes Solaris –Linux migration as well as maintaining 99.9% uptime at a minimum.

Installed, configured and implemented 3rd party and in-house (custom) applications as per frequent code change.

Secured and configured multiple network services including vsftpd, NFS, CUPS, Apache, web application firewall on RHEL configured these services for secure access. Closely coordinated with SAN, DB, Network and WEB Logic teams for storage, fabric issues, Db tuning and portal configurations. Also interfaced with developers/functional representative on data load/conversions

Documenting day to day problems (FAQs), major configuration changes and system architecture changes.

Involved in support for production environments and proactive troubleshooting as required for the project.

FIRSTDATA CORPORATION, Dallas, TX Sept 2008 – Oct 2010

Senior Systems Engineer (Lead)

Installed, configured and administered Unix-Solaris 10(Jumpstart) and Linux-RHEL (Kickstart with net and PXE boot) servers with latest patches and FDC’s standard Monitoring and middleware tools for standalone & cost effective Solaris LDOMS, Zones (container) with (ZPOOLS) ZFS and with Virtual x86 Linux with VMware tools.

Configuring distributed file systems and administering NFS server and NFS clients and editing auto-mounting mapping as per system / user requirements on Unix/Linux.

Coordinated with DBA, Storage, Web, Application, Site engineering, Network, Security and Vendors team to resolve bottlenecks like system & network tuning, h/w issues, data migration from old servers, SAN lun (using native rhel dmp, Leadville drivers and veritas DMP) allocation and security issues using standard OS and customized procedures.

Prepared Design, Build, Operational and Production readiness documents for server installation,

As a prime administrator, maintained 4 core Opsware (HPSA) servers and a lab server with 2580 clients which includes Solaris, AIX, Linux and ESX.

Upgraded Opsware version from 7.5.05 to 7.8.2 along with server automation reporter and integrated SAS with NAS.

Worked on Server Security, Patch, Audit and Application configuration compliance and remediation as per Business standard.

Tested patch installation with FDC’s standard for different UNIX (Global and zones) and Linux images using Opsware patch policies.

Plan, Implement and Create proper user, application dynamic and static device groups for easy Opsware administration.

Installed Solaris 10 and Linux standalone, zones, LDOMSs and Linux VM’s with Veritas cluster for HA solutions.

JP Morgan Chase, Columbus, OH

Senior UNIX Implementation Engineer Jan 2004 – Aug 2008

As a Senior UNIX SA in CTRBS solely responsible for GFT- Hardware refresh and DC migration, involved in the following activities.

Consolidated 140 midrange servers (E420R/220R/450/3500) from Solaris 6/8/9 OS to 97 Solaris 10 servers with new

Sun Fire servers T1000/2000/5200/5240 & Fujitsu M4000/5000 servers with LDOMS and Zones along with application,

Data bases and nearly 500 users.

Created 4 x 2 node Veritas clusters (5.0) with veritas I/O fencing for HA on 3 mission critical applications with Veritas volume management software (5.0) and Veritas file system. Mirrored root disks using Solaris volume manager (SVM).

Installed and deployed Opsware SAS 6.x agents, registering H/W and S/W to respective Data center Opsware Cores,

Tested Opsware agents with standard build security compliance policy and connected the same with infovista.

Tested DR servers before go-live and created San boot disks and SRDF failover during DR test (UAT Server used as DR).

Created Shell scripts for repetitive tasks like DB and apps log rotation, veritas volume adjustments and for performance

On Production & pre-production (Dev/UAT/PROD) servers as per DBA’s & AD’s request modified file system sizes on Created Zpools & Veritas volumes on Global(standalone) and Zpools on Ldom and Zones for Solaris 10 /RHEL 4.5 servers with SAN disks (EMC and Hitachi)

Created ECM as per server’s maintenance window and informing the impacted groups.

Following things done in the process of post build tasks on Solaris and Linux servers:

Patch and OBP Upgrade to the latest JPMC Certified Patch Set (2008-07)

Install/Verify Tivoli Endpoint (>=4.124), SUN explorer 5.2

Qwest Communications, Weehawken, NJ

Sr. UNIX System Administrator and Team Lead Feb 1999 - Dec 2003

Unix Team Lead in an Enterprise environment of 300+ servers managing a team of 12 Unix System Administrators.

Evaluated the storage subsystems for host attached storage and implemented Sun T3 attached storage with RAID level 5+ 1+ 0 for performance and redundancy.

DNS DR (disaster recovery) site implementation and testing. This task involved implementation of a disaster recovery site for redundancy.

Support enterprise storage management function to manage allocation, backup, recovery, media retention and forecasting for all administrative disk and tape resources including storage libraries and silos.

Periodical analysis of the UNIX servers for system bottlenecks and performance and implementing remedial measures.

Education:

Master of Engineering (MS) (Electrical and Electronics)

Bachelor of Engineering (BS) (Electronics and Communications)

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