SUMMARY

I have 16 years of rich work experience as a Lead Unix Admin and Storage Administrator managing data center operations, excellent communication skills, leadership qualities, Trained and setup support teams in 2 global locations, enthusiastic initiator, excellent problem solver, seeking a Lead Linux infrastructure/Cloud Architect position with a desire to achieve outstanding results. Directly managing more than 250 nodes in over 19 data­centers with servers/vm's of multiple linux flavors hosting different HCM products. I was the escalation end point for our L2 operations team from Bangalore and Budapest.

TECHNICAL SKILLS

Linux: Red Hat, SLES, Debian, Fedora, Solaris,HP - UX, AIX,

Databases: MS SQL, Oracle-9i, 10g, 11g, Oracle-RAC, MySQL, Access

Tools: Tomcat, JBoss Segue - SILK Testing tool, Rational Rose, CVS, ClearCase, MS-VSS, Remedy, RSA Remote VPN, Cisco Anyconnect & SSL VPN, VMware ESX, EMULEX HBA, Brocade San-Surfer, Capistrano, Puppet, Splunk, Atlassian JIRA, freshClam clamav anti-viruses, MRTG. Vintella Auth Services- VAS, Centrify AD,Akamai, F5 load Balancer, GIT.

Monitoring tools: MRTG, Nagios, Sitescope, Zabbix, Pingdom, Groundworks Splunk, Centreon.

Confidential suite: Navisphere Manager (Storage array GUI), Navisphere navicli (Storage array CLI), Mirror-view (storage mirroring), Snap-view (Online data backup). SAN-COPY (Data Transfer tool), Incremental SANCopy (Incremental Data Transfer tool), Confidential PowerPath Failover utility

Languages: Basic, Fortran, Pascal, Bash, Perl, Shell scripting

Networking: TCP/IP, NFS, NIS DNS, FTP, SSH, DHCP

O.S.: Red Hat Linux, SuSE Linux SLES, Solaris, HP-UX, AIX, Debian, Windows

SAN Switches: Brocade-16 & 32 ports, Mc. Data-16 & 32 ports

Storage Arrays: Confidential /CLARiiON FC4700, FC4500, 5500, 5400, 4500, CX400, CX600, CX800, CX450, CX650, CX700, AX100, AX150, NetApp NAS - Data ONTAP ver 7.2.4

CLOUD Tech: Worked on AWS, IBM Cloud and SAP Cloud, SAML, OKTA, LDAP, AD, Kerberos authentication, Centrify-AD.

PROFESSIONAL EXPERIENCE

Confidential, Cambridge, MA

Principal Linux Administrator

Responsibilities:

• Setting up Suse Linux SLES servers to be used as Application & web server for SAP e- sourcing Material Mgmt module. Administering over 200 servers in 7 datacenters globally.
• Managing & administering 250 servers in 12 Datacenters hosting SAP’s products like SAP-Success-Factors, SAP-Jobs2web, SAP-BizX Federal database, SAP LMS- Learning Management Systems, SAP-RMK -Recruitment and Marketing, SAP Cloud infrastructure.
• Developed and trained SAP Bangalore & Budapest L1, L2 support team on RCA and ticket resolution as part of the 24x7 support.
• Setup a Virtual images for Linux- both SLES & Red-Hat, and Windows-XP/2003
• Compiled the stock kernel to a customized hardened kernel & the PAM modules for security.
• Modified kernel parameters for optimal jboss, and apache performance.
• Ran the CIS benchmarking tool to rate the security on the servers & configured Bastille.
• Setting users & groups with controlled access privileges.
• Setup aliases & sudo to be used by overseas 24x7 L1 support team.
• Used Symantec Ghost application to store the customized kernel and use it as a cookie cutter to deploy on multiple servers.
• Configured Akamai web caching for customers accessing our application
• Configured Load Balancer for HA and load balancing.
• Setup network card teaming/ bonding and also IP aliasing on the linux servers for high availability.
• NTP Expert- Setup ntp to sync clock on all servers with our internal/external ntp time servers. Also configured “ NTP peering ”. Familiarity with using the Tardis & SNTP.
• Participated in annual Audits -SAS, ISO-27001 for policies and facilities. Also documented topics like - Change control, system builds, physical security, backups, operational processes, ticketing, testing and risk assessments.
• Participate in ethical hacking exercise to test and secure our applications identifying and plugging potential loopholes.
• Installation of the NetWeaver CE 7.1 on SLES10 server and Red-Hat-AS
• Setup Amazon Cloud instances consisting of server running SLES, NetWeaver CE7.1, DB2 9.1 FP3 database and the SAP E-Sourcing application
• Setup and configured alerts and triggers on Nagios, Zabbix, Sitescope, Pingdom. to monitor server health, setup Splunk for log files management.
• SAP HCM Product: Deploying weekly code to over 250+ servers globally using Capistrano deployment tool.
• Currently migrating our HCM applications from Debian Linux to SLES Linux globally.
• DC operations like migrating data from NAS filer to clustered storage filers, Migrating database from Virtual to physical, increasing compute, disk and memory h/w resources on VM etc.
• Build out the HANA servers with SLES OS and customized Disk partition using both SSD drives & SATA drives for product Streamworks.
• Manage, administer & fine tuning of Streamwork servers running SAP’s HANA database.
• Using SAP HANA Studio graphical dashboard to manage the HANA dB instances.
• Set up snapshot and snap-mirror cron scripts to run on the NetApp and stored at a DR site for database backup and restore for DR.
• Setup persistent Oracle backup between database and standby servers over NFS.
• Facilitated the management of linux servers with native Kerberos authentication of linux clients with Windows AD servers.
• Implemented the Quest-Vintella Windows Active Directory Authentication services using the VGP - Vintella Group Policy Objective.

Confidential, Westborough, MA

Linux Admin

Responsibilities:

• Account management- Setup users and groups with controlled access privileges.
• Setup aliases & sudo to allow 24x7 L2 support to log into the servers for restarting services.
• Setup Disk quotas and resource limits to overcome memory leaks.
• Setup ssh files to display corporate warnings on logins & disabled transmission of root passwords.
• Setup Logrotation & Custom Log Formatting to be used as per audit requirement.
• Setup init/boot scripts for services to be activated in event of server reboots.
• Configuring NIS/YP Servers for Centralized and secure Password and Login management.
• Set up Intranet Web Servers with APACHE, multiple-site management with named-based Virtual Hosting and access control with HTTP/HTTPS authentication
• Hardened Apache configuration to disallow indexes and symbolic links from being displayed in the web page.
• Was responsible for configuring, administering & backing up VM’s in our group.
• Setup Cygwin on terminal servers to access the linux servers via ssh.
• Enabled X-forwarding onto windows machines for remote administration purposes using Xming and Cygwin.
• Remote administration using IBM RSA -Remote Slimline Adaptor or HP LightsOut utility.

Confidential, Westborough, MA

Senior Software Engineer

Responsibilities:

• Performing Linux and Windows QA/Testing tasks, configurations and management of multiple family lines of Fiber and iSCSI storage arrays,
• Setting up a FABRIC using Brocade/Mc. Data switches to zone the storage arrays with hosts, using World Wide Name Zoning & port zoning. Host OS were Windows, Red Hat Linux, SLES, Solaris, HP-UX, AIX, and Netware
• Doing NDU- non-destructive upgrade on the both Fiber and iSCSI storage arrays.
• Backend Cabling of the DAE -Disk Array Enclosure and DPE -Disk Processor Enclosure on the Fiber/iSCSI Confidential Storage arrays.
• Upgrading the Firmware on both switch and array, installing patches on Linux
• Writing Smoke, Negative, Regression, Functional, Boundary, System, Integration test cases.
• Writing batch files, PERL scripts to test CLI commands, SILK tests for testing GUI.
• Creating Test Plans using the Functional Specifications, & getting the test plan approved by the developers by organizing a Test Plan Review meeting.
• Attending & contributing to Functional Specification review, Test Plan review, Code Review, New product training and Inter/ Intra group meeting, Defect resolution review, QA Post Mortem meetings.
• Kernel Compilation, Kernel Hardening and Customizing Kernel from stock kernel to handle additional non-standard h/w and s/w.
• Use of Confidential Navisphere product suite - mirroring (MirrorView), snapshots (SnapView), Incremental SANCopy (ISC) for backup strategy.
• Strong concepts/implementation of backups/DR & planning/strategies
• Simulating I/O for raw databases as well as Volume groups, LVM’s, file systems
• Creating RAID 0,1, 3, 5 luns & Raid Group and attaching them to Hosts- Netware, Linux-RH, Fedora, Debian and SLES, AIX, HP-UX, Solaris & Window- 2000, 2003.
• Used Remedy for tracking defects, Clearcase for documentation, CVS for Perl script source control, and MS Visual SourceSafe for Test Plan source control.
• Setting up Secure NFS Servers with multiple Clients for File and Disk sharing for Corporate Intranets’ include Failover, High-Availability NFS Servers..
• Setting up SAMBA servers, to enable Windows clients to communicate with Linux
• Used LVM for dynamically extending & reducing partition sizes.
• Setup and configured GNU/Linux X-Window Jump-Host servers to remotely log in from various different Clients over remote Networks.