Summary
Overview
Work History
Education
Skills
Timeline
Generic

Muhammad Saad Haroon

Philadelphia,PA

Summary

A passionate Linux System Admin with +6 years of experience. Skilled in installation, patching, and troubleshooting in core-computing environments on servers with RHEL 6, 7, 8, and CentOS 6,7, 8. Expert in performance monitoring of servers as well as kernel tuning. Using Ansible for configuration, and orchestration on large-scale environments. Experienced in handling virtualized environments based on VMware where managed clusters and migrated servers P2V and V2V. Hands-on experience with DevOps tools such as Docker, GIT, AWS (Creating EC2 instances, IAM, S3, ELB, EFS, Route 53, and CloudWatch). Exposed to Kubernetes and knowledge of Bash scripting to automate daily tasks. Good communication and interpersonal skills.

Overview

6
6
years of professional experience

Work History

Linux System Administrator/Linux Engineer II

BNY Mellon
06.2021 - Current
  • Deploying, configuring, and managing of VMware ESXi, and expertise in vCenter to remotely managing Linux-based servers
  • Executed seamless migration and upgrade from RHEL 7 to RHEL 8 for critical production servers by using leapp utility
  • Experienced in using Version Control System (GIT) to store code and maintaining central GitLab repository for code releases
  • Monitored and rectified performance imbalances of system CPU, RAM, I/O, NET
  • Experienced with the configuration of various RAID levels appropriately including RAID 0, 1, 5, 6 & 10 on physical servers
  • Proficient with using LVM for creating, extending, and reducing storage for managing file systems
  • Experience in spinning up AWS EC2 instances, attaching security groups with EC2 instances, using cloud watch for monitoring application health and other resources
  • Creating S3 bucket and using ELB to route incoming traffic and to distribute load on cloud network
  • Used Jira ticketing tool for tracking user requests, incidents, and getting alerts
  • Using Nagios for server performance monitoring and to detect issues
  • Supporting, maintaining, upgrading application servers and environments using Ansible and its components such as playbooks, roles, ADHOC and Ansible tower
  • Scheduling jobs, maintaining inventory, deploying playbooks across groups and hosts using Ansible tower
  • Using Ansible Tower for orchestration of tasks to create jobs and templates for configuration management for remote servers
  • Managing system performance on the command line by utilizing SAR, Netstat, Vmstat, Top, Iostat and took in time corrective measures to resolve issues
  • Working with Active Directory (AD) services and group policies to add new users and managed their access to certain server groups
  • Configuring Network file System (NFS) to share files and directories over network with clients
  • Troubleshooting and ensuring maximum uptime
  • Configuring NIC teaming to create the active backup for crucial network and load balance for high speed traffic management.

Linux System Administrator

Dupont
06.2018 - 05.2021
  • Used logs to analyze and optimize virtualization performance of ESXI hosts and virtual machines
  • Migrated servers from one ESXi host to another within a cluster using vMotion and took advantage of vMotion to move storage of critical data from one server to another
  • Proficient in System administration, System planning, co-ordination, commissioning, setting up security hierarchy and capacity planning
  • Apply OS patches and upgrades on regular basis and upgrade administrative tools and utilities
  • Configure/add new services as necessary
  • Created journaling filesystems to keep track of changes, resized file systems and executed filesystem health check
  • Managed and troubleshoot network traffic on CLI using tcpdump, ifconfig, netstat, traceroute, nslookup, ping, dig, and analyzed packets through Wireshark
  • Added ports and services in firewall by using command line, and managed Selinux to enhance Linux security
  • Strong technical background in Storage, Disk Management, Logical Volume Management (LVM) and logical partitioning
  • Managed and troubleshoot network such as TCP/IP, UDP, NIS, DNS, NTP, SSH, NIC Teaming
  • Performed kernel tuning on application team on request to meet application architecture need
  • Scheduled Back up and different jobs by using list of commands (CronTab) on servers
  • Installed and configured Apache web servers and troubleshoot
  • Performed RCA analysis to identify bottlenecks and improve performance and created documentation for future reference
  • Exposure to pull Docker images from Docker hub and spinning up container and deploying images for application/ developer teams using Docker
  • Set up the users, groups accounts in RHEL 6,7 & set up the local password polices
  • Configured sudoers file to provide elevated privileges to users and exclude root password.

Linux Desk Side Support

GetFelix
03.2017 - 05.2018
  • Installed new equipment and replaced faulty hardware
  • Compressed packages, files, and folders by using TAR utility to save space
  • Generated password-less authentication keys by using ssh-keygen and shared public key with server to ensure password less
  • Add support to Linux Admins and Engineers to complete their tasks smoothly
  • Managed regular updates and upgraded software
  • Performing day-to-day troubleshooting of SAN/NAS/Backup related issues
  • Provided on-call support and worked with Vendors on system issues and bugs for its resolution.

Education

EBF - Energy Business and Finance

The Pennsylvania State University
State College, PA
05.2018

Skills

  • Virtualization: VMware, vSphere, vMotion, vCenter, ESXi
  • Operating Systems:
  • RHEL 6,7, 8, CentOS 6, 7, 8, Ubuntu
  • Package Management: RPM & YUM
  • Monitoring: Nagios, Prometheus, Splunk, SolarWinds
  • Networking: TCP/IP, TCP Dump, SSH, UDP, NIC Teaming, DNS
  • Version Control System: Git, Git Lab
  • Automation: Ansible, Ansible Tower, Bash Scripting, RedHat Satellite
  • Ticketing: ServiceNow, Jira, BMC Remedy
  • Containerization: Docker, Kubernetes
  • User Management: Open LDAP, Active Directory
  • Storage: SAN, NAS, NFS, LVM, RAID
  • Servers: FTP, TFTP, PXE, Apache, Nginx, DHCP, NFS, DNS
  • Cloud (Amazon Web Service) EC2 instances, EBS, EFS, IAM, CloudWatch, S3, ELB, RDS

Timeline

Linux System Administrator/Linux Engineer II

BNY Mellon
06.2021 - Current

Linux System Administrator

Dupont
06.2018 - 05.2021

Linux Desk Side Support

GetFelix
03.2017 - 05.2018

EBF - Energy Business and Finance

The Pennsylvania State University

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Muhammad Saad Haroon