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Sr. Unix Administrator (sme) Resume

SUMMARY:

  • Substantial hands on technical expert with an overall 12+ years of experience as Linux/Unix System Administrator/Infrastructure build and manage on Cloud, on premise, Virtual environment and other IT and Telecom sectors. Detail oriented, accomplished, outcome driven, problem solver, self starter, lead/manage team independly, little/no supervision. Comfortable adapting to rapidly changing environments.
  • Experience in CI/CD Automation Tools such as Jenkins, AWS CloudFormation, AWS OpsWorks.
  • Proficient in Amazon Web Services such as AWS Lambda, EC2, ECS, VPC,S3, RDS, DynamoDB, Lambda, IAM, SQS, SNS.
  • Expertise in Infrastructure Configuration using Orchestration Tools as Chef, Ansible, Puppet.
  • Experience in Containerized Application Deployment using Kubernetes and Docker
  • Experience working with Source Control Management tools such as Git, SVN
  • Proficient in Unix/Linux based OS Configuration and code for automated tasks using scripting in Bash, shell, python.
  • System administration on RHEL, OEL, CentOS, SUSE, Solaris, VMware and Windows
  • Hands on experience with Services/Systems like Apache, LAMP, VMware virtualization, Software Load Balancer
  • Expertise in Performance Monitoring Tool like Nagios, AWS CloudWatch, Cacti.
  • Expertise in managing several file systems using Logical Volume Manager (LVM), SVM, ZFS, VXFS
  • Experience in Opscneter to deploy Solaris LDOM and Zone.
  • Experience in database like Oracle, Informix, Timesten, MySQL.
  • Experience in Storage (Hitachi/EMC/XIO)

PROFESSIONAL EXPERIENCES:

Confidential

Sr. Unix Administrator (SME)

Responsibilities:

  • Managing systems backup ( Avamar and Veritas Netbackup ) .
  • Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents.
  • IP configuration, bonding, IPMP, Teaming and troubleshooting using ethtool, tcpdump. Snoop, ARP.
  • User and group management as requested.
  • Vcpu and memory allocation in ESX as requested .
  • Configured High Availability clusters ( RAC , VCS ) on Linux .
  • Preparing servers for Oracle RAC including tuning the kernel, passwordless ssh, SELINUX , GRUB configuration .
  • Involved in Datacenter server migration , cloning , vmotion , P2V , V2V using vmware converter and OVF .
  • Data migration with Robocopy .
  • Created and managed templates in VCenter .
  • Created Standard and Distributed Switches (dvSwitch) and VLAN in the vCenter for making use of best network design and stability across the vCenter.
  • Storage configuration using Logical Volume Manager ( LVM) , Veritas Volume Manager ( VxVM) .
  • Deployed VMs using OVF / OVA Templates.
  • SAN assessment for decom server and remove from Hitachi, EMC device as well as unzoning and port reclaim from Cisco and brocade switch.
  • Perform scripting on Perl and shell to perform build QA .
  • Configuring the FTP , DNS , SMTP , NTP and troubleshooting them.
  • Installing and configuring opsware agent to patch all Linux , windows and solaris servers.
  • Managing internal DNS server records addition.
  • Implement infrastructure using AWS , EC2 , S3 , ALB , IAM , VPC , VPC peering , Cloudformation, Resizing root EBS volume, Route 53
  • Hands on experience with using Lambda function to create job.
  • Deploying Ansible, Deploying service with ansible, Create some playbooks.
  • Install Docker Container, Deploying website,
  • Install and configure Jenkins. Building jenkins CI/CD pipelines. Deploying docker container and Kubernetes with Jenkins pipelines.
  • Install Kubernetes and orchestration docker container
  • Build Infrastructure , involves builds and decommissioning of Solaris, Linux (RHEL 5x, 6x 7x OEL 5x, 6x 7x), Windows (2K3, 2K8, 2K12, 2K16 ), ESX servers.
  • Deploy servers using Kickstart , Jumpstart and wanboot .
  • Configuring and sizing of Solaris LDOM and Zone through Opscenter .
  • RPM and YUM package installations, patch and other server management.

Confidential

Sr. System Engineer

Responsibilities:

  • Installation of RHEL (RedHat Enterprise Linux) 5.X, 6.X, 7.X administrator and server maintenance.
  • Automate server health checkup using script.
  • Experienced on string processing utility ( AWK , SED , cut , tr , grep )
  • Experienced in Installation, configuration of application and web server.
  • Built Solaris servers, including LDOMs and Zones.
  • Involved in supporting and maintenance of HP ProLiant servers, HP blade systems, Dell PowerEdge Servers, Sun Fire V series, T series and M - series servers
  • Diagnosis and maintenance of hardware issues involving single and multiple point failures, working with vendors for H/W replacements.
  • Creating and managing Virtual Machines and Templates on VMware ESX (4.x, 5.x)
  • Support autofs mounts, installing packages using yum and rpm packagement on Linux.
  • Experience installing, configuring, tuning, and supporting Linux servers.
  • Involved extensively in virtualizing and managing them using VMware and VCenter VSphere.
  • Experienced in tasks like managing User Accounts and Groups, managing Disks and File Systems.
  • Worked on Analyze system performance, client to server traffic and server to server traffic.
  • Performed OS provisioning using Kickstart and Jumpstart.
  • Experienced with VMware Virtualization using ESX hypervisor of VSphere.
  • Create, extend, reduce and administration of Logical Volume Manager (LVM) in RHEL environment.
  • Maintaining Solaris Volume Manager (SVM)
  • Storage configuration (SAN and NAS).
  • Configuration of Network bonding which include Active/Standby and Active/Active.
  • Tune kernel in RHEL and OEL.
  • Ensure daily backup using rsync .
  • Experienced on version control tool ( Git , SVN ).
  • Troubleshooting Network,memory,cpu,swap and File system issues,TCP/IP, NFS, DNS, SMTP in Linux and Solaris servers.
  • Creation of Jumpstart and Kickstart configuration for the automatic provision of servers.

Confidential

Linux/Unix System Admin istrator

Responsibilities :

  • Installation and troubleshooting of RHEL , Debian , Ubuntu , and SUSE (10, 11)
  • Writing shell and Perl scripts for automation of various repitative tasks.
  • Configuring file systems using Logical Volume Manager ( LVM ) .
  • Installation of ESXi , creation of new CentOS servers, worked on creating and monitoring new virtual machines.
  • Experience in Install ing LAMP stack, backup and restore MySQL database.
  • Experience in configuring multipathing for RHEL 6 servers and HP - UX servers.
  • Configuring DNS, subnetting , TCP/IP, NFS, DHCP .
  • Install and maintenance of Nagios and adding new server.
  • Experience in administering, troubleshooting and deployment of Tomcat 6.x
  • Hands on experience on configuring Load balancer ( haproxy )
  • Experience in managing and troubleshooting Apache Web servers .

Confidential

Application and Software Engineer

Responsibilities:

  • As a technical expert engaged in overseas project in Bhutan.
  • Design, planning and deploy application software in Tashi Cell, Bhutan.
  • Support one of the biggest telecom operators (Robi) in Bangladesh and multiple telecom operators in Bangladesh.
  • Installing and configuring Linux and Solaris OS on IBM Servers. Installation, Configuration, Administration & Trouble Shooting of RHEL servers on large scale.
  • Creating and deleting user - ids as per requests.
  • Closely working with network team and security team.
  • Operating system tuning.
  • Handling trouble ticket and Incident management maintaining SLA.
  • Monitoring and troubleshooting system performance related activities.
  • Experienced on job scheduler ( cron , at ).
  • Write and execute script to automate repitative task.
  • Database and application backup/recovery and monitoring.
  • Working on change management.
  • Job scheduling using cron, at.
  • Review and Maintain logs of production failures and resolutions.
  • System updates.
  • Assigning LUNs to the server.

Confidential

Support Engineer

Responsibilities:

  • CPU , Memory , disk checking .
  • Performance monitoring .
  • Installing and maintaining monitoring tool Cacti , dstat , sysstat .
  • DNS , mail , Samba , apache installation and maintenance.
  • Hands on experience using the VI editor.
  • Install, configure, tuning, security, backup, recovery and upgrades of RHEL 5.5 and higher.
  • Perform day to day System Admin tasks.
  • Good Knowledge of LVM, which include creating PVs, VGs, LVs and filesystems and troubleshooting.

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