Summary
Overview
Work History
Education
Skills
Career Highlights
Timeline
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Ammar Sheikh

Summary

Linux Systems Administrator/Engineer with over 10 years of experience in Linux and Cloud services. Expertise in monitoring, managing, deploying, and troubleshooting server issues, leading to enhanced system reliability and increased server performance. Committed to continuous learning and contributing to team success through effective problem-solving solutions.

Overview

11
11
years of professional experience

Work History

Linux Kernel Engineer

Lenovo
North Carolina
11.2021 - Current
  • Build the Linux kernels, apply patches to debug the issues, and attempt to resolve it. Alternatively, check if the issue is fixed in a later kernel version, or review the kernel source code to see if the fix is included in the later kernel.
  • Lead the IGEL technical team.
  • Manage issues within the Incident queue using JIRA. Providing detailed notes and troubleshooting steps taken to resolve all each Incident.
  • Perform firmware upgrade for hardware device, manually and thru LVFS.
  • Collaborated with IGEL engineers and QA to debug, test, and resolve any issues that arise during the preload process.
  • Also conducted SSRB reviews for various OS versions.
  • I have collaborated with sales teams from various regions to test IGEL on different platforms and OS versions to ensure its compliance with the device.
  • The Jira workflow and dashboard are continuously being improved to keep track of any bugs and resolve them efficiently, with the goal of minimizing them.
  • Worked on a forum issue and tried to assist the customer in resolving it.
  • Created and updated procedural documentation to assist my Team with daily work duties.
  • Bisect Linux kernel to see check which commit causes the kernel regression issue.

Linux Systems Administrator

JPMorgan Chase & Co
Ohio
03.2020 - 09.2020
  • Support Linux across Physical and Virtual environments and technologies for all on-prem and remote servers, applications, and users in the corporation.
  • Working towards building fully functional Gaia Kubernetes Platform cluster environment.
  • Responsible for installation, configuration, building OS images along with providing deliverables in a timely and projected time frame.
  • Using Ansible and Bash to automate day to day redundant tasks where applicable be it networking or DBA team.
  • Performing quarterly system patching, configuration, and upgrades using AAAS Microservices.
  • Remote administration of Linux server using SSH, Ansible, and Vsphere.
  • Used Version Control system to manage, modify and keep track of data, via Bitbucket.
  • Install and configure monitoring tools such as Geneos, FluentD, Evolven and ESM/CCS.
  • Performing updates and working with vendors to keep the servers in compliance with the corporations policies with the help of ITRC/risk breaks.
  • Managing Rhel 6/7/8 packages using yum and Rpm.
  • Configure IP addresses, Subnet Mask, and Gateway Address on Hosts
  • Executed and Created various Playbooks or projects and day to day task.
  • Assisted the application team with Vormetric Encryption and Geneos onboarding.
  • Installing and updating software packages from a remote repository.
  • Scheduling Cron jobs, and upgrading packages.
  • Updated inventory using inventory-controlled tool called Verum.
  • Provided professional technical support to clients.

Linux System Engineer

Yahoo-Verizon Media
New York
05.2016 - 02.2020
  • Remote administration of Linux server using SSH, Ansible, Nagios and Vcenter.
  • Provisioning and launching EC2 instances.
  • Setting up security groups, NACL’s, and IAM policies to maintain a safe cloud environment.
  • Backing up and storing data in S3 glacier and S3 buckets.
  • The use of Docker files to create private Docker images.
  • Monitoring, provisioning, and troubleshooting Docker containers.
  • Deploying and maintaining Docker containers.
  • Added, Managed, Indexed, updated GIT HUB and its repositories.
  • Installed, configured and deployed using Ansible.
  • Supported DevOps on Ansible platform.
  • Installation and configuration of various Linux flavor such as Red Hat Enterprise Linux 5.0, 5.4, 6.0 and CentOS.
  • Package management using RPM & YUM, Disk Management: partitioning tools like fdisk, parted etc.
  • Managing different file servers like NFS, FTP and SAMBA servers.
  • Configuration of NFS client for file sharing.
  • Configuration of FTP and Remote applications like SSH, SCP and TELNET.
  • Configuration of different RAIDS RAID 0, RAID 1, and RAID 5 on Linux.
  • Configuration of LVM and managing the volume, configuration of virtualization.
  • Diagnosing, monitoring performance and network related issues using PS, TOP, Sar, Iostat and Netstat.
  • Maintaining Linux Quota System, Operating System installation through Kickstart and PXE Boot.
  • Remote administration of Manageable Routers & Switches with Telent and SSH.

Linux Analyst / Admin

Nvidia
California
07.2014 - 03.2016
  • Installation, configuration, management and maintenance over Linux system.
  • Installation, Upgrading and configuration of RedHat Linux 4.x, 5.x, 6.x using Kickstart Servers and interactive installation.
  • Responsible for creating and managing user accounts, security, rights, disk space and process monitoring in Solaris, CentOS and RedHat Linux.
  • Configuration of NFS, DNS, FTP remote access and security management.
  • Configuration of LVM and managing the volume, configuration of virtualization.
  • Install, upgrades, and manages Package using RPM & YUM.
  • Manages Patches configuration, version control, service packs and reviews connectivity issues regarding security problem.
  • Manages Systems routine backup, scheduling jobs and enabling cron jobs.
  • Configured Kickstart servers for baseline configuration and PXE Boot servers as file servers for Linux via NFS/SAMBA.
  • Monitored system performance and prevented resource exhaustion using SAR, VMSATS, IOstat and Netstat.

Education

Undergraduate -

Brooklyn College

Skills

  • Operating systems: Fedora, Ubuntu, RHEL, Rocky, CentOS, Debian, Windows
  • Networking protocols: TCP/UDP, DNS, NFS, DHCP, FTP
  • Automation tools: Ansible, Docker, Kubernetes
  • Scripting language: Bash
  • Version control systems: Git, Bitbucket, GitHub
  • Virtualization and cloud platforms: AWS, VMware, Oracle VirtualBox
  • Applications: JIRA, Splunk, Grafana, ServiceNow

Career Highlights

  • Creating and troubleshooting users, groups, and permissions queries to provide a secure environment along with maintaining a productive environment.
  • Analyzing and troubleshooting file systems, servers and network connectivity issues.
  • Maintaining, collaborating and logging different versions of code using Github’s Version Control options.
  • Pushing, pulling, and staging files/directories from the Remote repository.
  • Setting up and allowing an Elastic Load Balancer for public servers.
  • File System Management: EXT2, EXT3, EXT4 utilities.
  • Maintain EC2 instances with the help of Cloudwatch.
  • Managing and deploying LVM partitions, SAAS, SAN, NAS, and filesystems.
  • Deploying VMware and hybrid solutions infrastructure in an Enterprise Environment.
  • Installing and configuring Servers such as Apache (httpd), DNS (bind), NFS, FTP, Ansible, Samba, logs, and Nagios.
  • Supporting scheduled on-call rotation for after office hours.
  • Working on incidents and service requests to meet company SLA.
  • Decommissioning, provisioning, troubleshooting and patching servers.

Timeline

Linux Kernel Engineer

Lenovo
11.2021 - Current

Linux Systems Administrator

JPMorgan Chase & Co
03.2020 - 09.2020

Linux System Engineer

Yahoo-Verizon Media
05.2016 - 02.2020

Linux Analyst / Admin

Nvidia
07.2014 - 03.2016

Undergraduate -

Brooklyn College

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