Engineer Manager
Resume:
Ambujakshan Kalluadi
Email: *********@*****.***
Experience Summary
Having 22 Years of experience on various IT infrastructure projects for SAUDI ARAMCO, KAUST, Saudi Arabian Monetary Agency (SAMA) Experience in installation, configuration, upgrade, maintenance, performance monitoring and troubleshooting of AIX Red Hat Enterprise Linux and SuSE Linux on various types of servers. Experience with installation and configuration of IBM and DDN storage, GPFS file system, High Performance Computing cluster systems for Oil exploration, SAP HANA clustering Systems for Core Banking Systems. Swift and Banking enforcement for Financial services on IBM hardware and AIX OS. Hands on experience of systems creation and configuration (RHEL and SUSE servers) on VMware based environment, Experience with TSM backup solution, configuration of different vendors layer 2 networking devices.
Platforms/Architecture
Linux Red Hat, CentOS, Ubuntu, SUSE
Unix AIX, Sun Solaris
Microsoft Windows 2012, 2008, 2003, 2000, NT4
IBM Hardware IBM p520, p550,p570,X3850, x3650, x3550, NeXtScale nx360, HP Hardware DL 380, DL360, DL 145, Itanium
Networking
CISCO and HP Procurve 100Mbps, 1/10Gbps Switches and Qlogic, Mellanox 40Gbps infiniband switches for High Performance computing inband network. Storage IBM V7000, DDN 1000SFA and IBM DS9000 series Virtualization VMware Esxi, KVM and Red Hat Enterprise virtualization Cloud Computing Red Hat OpenStack
Certifications
RHCE Red Hat Certified Engineer RHCE6 (Certificate # 120-068-663) SLCP SUSE Certified Linux Professional SUSE 11
SCSA Solaris Certified System Administrator Solaris 10 CCNA Cisco Certified Network Associate CSCO10104953 MCSE Microsoft Certified System Engineer Windows 2000 Present Work Experience Details
Organization: Saudi Business Machines (SBM)
Designation: ITS Software Support
Duration: May 2011 to April 2020
A member of ITS Software team providing support of operations involving complex system on HPC
(Redhat) Environment & implementations and administration tasks for various customers. Implementation and management of SUSE SAP HANA and SUSE SAP application servers on HA environment. Implemented SUSE manager for periodic patch update and provisioning new vms. Managed around 120 LPARS with different AIX flavors running on IBM power Servers, running critical banking applications.
Job Profile: -
Working at client location as AIX and HPC hardware and software support in Saudi Aramco, Dhahran. The job profile was to keep track on all types of Daily, Monthly and Quarterly activities and their timely completion, planning of resources for weekend activities, planning, testing and implementing of OS Patches schedules in advance, troubleshoot and diagnose the OS Issues, performance related issues, provide the OS related solutions for applications and provide 24x7 type of support for the smooth running of applications. Other than these daily responsibilities, there are some routine tasks that are to be taken care.
Linux Environment
Implemented SUSE HANA HA clusters for core banking systems.
Worked on implementation for 2000 Compute nodes of IBM iDataplex Servers dx360 M4 and x3550 M3 with 10G Network having GPU nodes with 40Gbps Qlogic Infiniband inband network at Saudi Aramco on Red Hat linux base HPC cluster. Listed 70th rank in top500.org in supercomputing. http://www.top500.org/site/48751
Worked on implementation of 32 compute nodes IBM NextScale nx360 n4 having infiniband and GPU nodes at KFUPM university, Saudi Arabia.
Provided technical support to King Abdullah University Of Science and Technology (KAUST) on Red Hat linux OS, General Parallel File system(GPFS) and TSM backup solution
Worked on implementation of 850 compute nodes with RHEL5 on IBM Bladecenter HS23 with HPC Management Software xCAT.
Installing and Configuring IBM GPFS Cluster (General Parallel File System )
Installing and configuring (xCAT) Management Node for HPC Environment, Configuring IMM and AMM for remote management.
Red Hat Enterprise Linux Installation on Compute Node through (PXE Network & Kickstart)
Installing QLogic HBA Drivers and verifying its functionality through slci utility.
Installing and configuring IBM Platform HPC for KFUPM University.
Manage nodes for different groups (GPU Nodes, High memory Nodes, Tapenodes)
Extensively Monitoring HPC Cluster through Scheduled scripts.
Installing & Configuring Red Hat HA Cluster.
Installing Stateless and Statefull Red Hat Linux on Compute node (xCAT Stateless)
Troubleshooting hardware problems (CPU, RAM and Network, Disks) and checking critical hardware events/alerts.
Monitoring CPU, Network and Memory utilization on Compute nodes.
Monitoring file systems mounts and Troubleshooting File systems issues.
Monitoring Storage Paths and Storage Disk errors.
Stress Test of Memory, CPU, and Network Benchmarking through IPerf.
Checking messages, dmesg and mce logs,eventlogs.
Identifying the CPU bottle neck and setting the CPU affinity for IRQ and Interrupts.
Archiving and Retrieving data through IBM TSM 6.x on RHEL 6.0 and Microsoft Windows Server
Migrating users data onto new storage, ensuring data consistency, and security permissions AIX Environment
Performed system startup and shutdown, monitored system status, add and deleted user accounts and groups.
Performed file system maintenance relative to mounting and unmounting, periodic cleanup and troubleshooting any discrepancies in performance of the file systems.
monitored system performance
Administration of AIX Logical Volume Manager (LVM)
setting up and configuration of NFS Server
Handled backup and restoration process
Enhanced customer service by resolving problems while serving as escalation point contact for global operation teams
Handled periodic system performance tuning issues and management.
Generates and analyses system error logs
Worked on live Disaster Recovery of the production servers.
Installing AIX servers using NIM server.
Document server architecture and recommend areas/opportunities to improve service and management
User Administration tasks such as create users, define or changes their attributes, and define the security environment for the users.
Working with user password policy and configuring user password attributes as per customer policy and using SUDO for command controller
Monitoring and managing processes to examine specific system areas using ps, disk utilization, vmstat, iostat and netstat, nmon.
Using performance tuning for necessary process like vmo, ioo, no, etc.
Configuring and working with disk installation while upgrading and installing patches.
Experience troubleshooting performance related issues (CPU, Memory, Network, disks)
Diagnose hardware problems using errpt and diag and interpreting the output generated by these tools and find, troubleshoot hardware related problems.
Running snaps utility and collect system information and work with IBM Engineers to fix any system issues.
Working on ftp and ssh tool, cron and at job schedule tools
Managing log files, errpt, Daily Management activities and health checks. Checking file system usages, and performing housekeeping to free up the space as and when required.
Working with Network interfaces, adding, removing, configuring ip addresses, network speed and using ping, traceroute, netstat utilities.
Configure system dump devices, determining the dump device size, increasing dump device size, starting dump device etc.
Disk Storage Management in AIX – Logical and Physical Volume Configuration and maintenance.
Creating and removing the Volume Group, Logical volume, File systems.
Modify (Extend and Decrease) LV, PP(rootvg and othervg), FS
Using Mirroring and un mirroring concept in Rootvg and other VGs.
Configuration of new devices using cfgmgr - Disk Replacement incase of any disasters. Working with mirrored logical volumes.
Device management - Including add, change and configuring physical and logical devices.
Worked on exporting volume group from one node to other and adding new disks to volume group, replacing failed devices.
1. Previous Work Experience Details
Organization: Jeraisy Computers & communication service (JCCS) Designation : Technical Service Professional
Duration : June1998 to July 2011
Job Profile: - Inclusive Date: From 2005 Feb to March 2011
Assigned as HPC Linux Cluster Support professional at Saudi ARAMCO to maintain HP Servers and Operating Systems such as Red Hat Linux.
Updating the Patches, Kernel for Vurnability & Bugs issues & Firmware upgrade on HP DL series Servers. Resolving file system issues. Hardening Linux Servers, Shell Scripting using BASH.
Performance and tuning of Red Hat Linux and troubleshooting of OS and applications related problems.
Implemented and configured high speed, low latency switches such as Qlogic, InfiniBand, Cisco and HP Procurve for Application and private networks on HPC environment.
Creating and Implementing Changes on production servers.
Preparing reports for Root Cause Analysis (RCA).
Patch and upgrade systems ranging from Linux workstations to HP HPC Cluster systems. Job Profile: - Inclusive Date: From Aug, 2003 to Jan, 2005 Designation : Technical Service Professional
Interface with the user reported problem, provides user support and recommendations.
Hardware and software Installation and Maintenance of the following Sun systems such as Sun Ultra 80/60/10/5, Sun blade 1000 workstations,
Installation and configuration of external peripherals such as disk drives, tape drives and cd rom drives.
Configuration of dual head workstation in CDE environment. Configures DNS, NFS, NIS, TCP/IP, hardware/software setup, install server and boot server.
Perform patches search, patches installation, bug fixing, firmware upgrades and package Installation, Spare parts management and Documentation. Job Profile: - Inclusive Date: From Feb, 1998 to July, 2003 Designation : Senior Lead Engineer
Network Administration, Troubleshooting Software, Hardware problem, Access Limitations, Software Installations,
Lead Engineer in Southern & Western Area Saudi Aramco- ensuring that all assigned of work is completed as per published response and resolution targets.
Provide technical Support up 1,000 to 3,000 workstation Nationwide Saudi Aramco,
Investigate user’s problems and identify their source, possible solution, test and implement solutions.
2. Previous Work Experience Details
Organization: CMS Computer Service Ltd
Designation: System Administrator at Citi Bank for systems / Network support project Job Profile: - Inclusive Dates: From Aug 1996 to Feb 1998
Worked as a LAN Administrator to maintain the network link connecting 15 sites in Mumbai.
Creation and managing user ID, Print Servers, troubleshooting network and OS such as Novell 3.12, 4 and Windows NT machines including server & workstation.
Configuration, Management, Updating operating system and respective software and application administration.
Basic Configuration of Cisco switches and routers. Educational Qualifications
Kerala Government Certificate examination in Electrical Engineering (Kerala Government Technical Board)
Personal Profile
Name : Ambujakshan Kalluadi
Date of Birth : 10th Dec1969
Marital Status : Married
Nationality : Indian
Contact this candidate