Zohirul A. Islam: (929) 483-6475 - Linux Engineer - Devops - Site Reliability Engineer
Zohirul A. Islam: (929) 483-6475 - Linux Engineer - Devops - Site Reliability Engineer
Zohirul A. Islam: (929) 483-6475 - Linux Engineer - Devops - Site Reliability Engineer
Islam
(929) 483-6475 | zoh.islam1@gmail.com
PROFESSIONAL SUMMARY
Highly motivated Site Reliability/Devops Engineer with 5+ year’s experience automating,
optimizing and provisioning deployments on Linux Multi-Cloud/On-Prem environments. Leveraging
configuration management, CI/CD, and DevOps processes. Experience in SCM, Build/Release
Management, Change/Incident Management, and VMware. Excellent communication and collaboration
skills.
EXPERIENCE
Staples: Inc. Framingham, MA
● Production support for various applications on RedHat Linux, Ubuntu, VMware and CentOS.
● Managed storage, and disks using LVM, SAN, and local partitions.
● Implemented network security using IPtables and Firewalld rules.
● Implement advanced disk configuration such as raid 5 for redundancy and performance.
● Installed new servers using kick-start installation and configuration methods.
● Automated tasks through CRON regarding administration and maintenance.
● Installation of SSL certificates on Linux servers encrypted channel for communication on apps.
● Replaced hardware components, and set up infrastructure at Cyxtera data centers.
● Setup LDAP auth with different client servers and domains using high availability for Linux OS.
● Troubleshooting network and system issues through ticket management such as JIRA and
Salesforce with external customers.
● Used GitHub for source control management working with branches, and branch workflow.
● Management of Users accounts, System security, change management and performance tuning.
● Integration of various network related services like NFS, DNS, and DHCP.
● Server administration of local and remote systems via Command Line Interface (CLI),
monitoring logs for stop processes, disk space utilization, hardware failures, and etc.
● Configured VMware on clustered environment, implemented migration of virtual machines using
VMotion and configured HA and FT on servers, and vms.
● Created ovf backup templates of vms, setup DPM and DRS for high efficiency.
● Created puppet manifests to configure hosts, and manage OS configuration.
● Created documentation on confluence for how to’s, deployment steps, or team tasks.
● Worked on flexible hours for production, backup and on-call support for 24/7.
● Managed large scale Linux server environments: handling Linux environment, including
deployment, administration, networking, performance monitoring and tuning, security hardening,
troubleshooting and production operations
● Configured NIC bonding to increase available bandwidth and provided redundancy on switches.
● Provisioned multiple servers as in PXE, TFTP, FTP, NFS, AUTOFS, DHCP, and DNS.
● Provisioned a VMware ESXi on a Dell PowerEdge server to host multiple operating systems.
● Managed aptly local repo for legacy applications and created published snapshot repos.
● Used foreman to configure instances on RHEV for various environments.
● Troubleshooted slow servers by checking resources, I/O wait, load average, and swap space.
● Created a LVM to provide elasticity so you can scale up or down depending on the needs.
● Created a bash script to monitor specific resources as in CPU, Memory, Swap Space, I/O stats.
● Completed backups using NetBackup, scheduled during off business hours.
● Network troubleshooting related to TCP/IP, ethernet performance, NIC tuning, routing, subnets
gateway. Also worked with LAN, WAN, MAN, Hubs, Switches, Firewalls, and IPtables.
● Updated BIOS firmware and other software updates using iDrac console.
● Perform migration of virtualized servers with operating systems using VMotion.
● Troubleshooted boot failures, using single user mode, and iDrac/console.
● Communicated with hardware vendors and communicated with Cyxtera to fill in requests for
emergency changes.
TECHNICAL SKILLS
Linux, CentOS, RedHat, Ubuntu AWS, Docker, Kubernetes, GIT, Ansible, VMware, NFS, AutoFS, FTP,
Networking, CRON, Bash scripting, Azure, PXE, NGINX, Jira, Apache, Bitbucket, Microsoft Visual
Studio, Raid, Service Now, Nagios, Jenkins, EKS, AKS, Bamboo, GitHub, ECS, DevOps, Python,
Terraform