Summary
Overview
Work History
Education
Skills
Timeline
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Saad Raees

Elmont,USA

Summary

A highly skilled and results-oriented Linux Engineer with 6+ years of experience in the IT industry, bringing a blend of technical expertise, problem-solving acumen, and a commitment to continuous learning. Possesses in-depth knowledge of Linux server administration, encompassing both physical and virtual environments. Demonstrated proficiency in utilizing VMware technology and AWS for provisioning, configuring, maintaining, and managing Linux servers. Managing networking, user, file system, storage, and performance management, along with troubleshooting. Acumen of automation with Ansible and deploying apps in Docker Containers and managing code in remote repository i.e. GIT lab.

Overview

6
6
years of professional experience

Work History

Linux Operations Engineer

IBM
NYC, USA
07.2021 - Current
  • Proficient in installing and configuring Linux servers in both production and staging environments, utilizing standard build tools like pxeboot and leveraging in-house tools for enhanced efficiency
  • Proven ability to support VMware environments comprising ESXi hypervisor 5.0, 5.5, and 6.7, ensuring high availability and fault tolerance
  • Enhancing visibility, ensuring remote access and management with vcenter
  • Responding to incidents and adhering to the company's service level agreement by initiating change requests as required
  • Administering flexible SAN storage by leveraging LVM capabilities, including extending or reducing volume groups (VG) or logical volumes (LV), migrating LVM partitions, and restoring file systems through LVM snapshots
  • Optimizing system performance and enhancing speed through Kernel Tuning using the Sysctl command to dynamically modify kernel parameters and ensure their persistence across reboots
  • Identifying opportunities for process improvement and implement changes to enhance the overall reliability and efficiency of the Linux environment
  • Proficiency in automated server builds, standardizing images, and overseeing Linux systems through centralized management tools like Satellite and Ansible
  • Developing Ansible playbooks to streamline repetitive tasks, facilitate rapid deployment of critical applications, address tasks such as OS hardening, user creation, patching, configuration management, server monitoring and proactively manage changes
  • Utilizing Ansible Tower to configure, patch and scheduling jobs
  • Collecting and aggregating log data from various sources within the Linux environment, including system logs, application logs, and custom log files by employing Splunk to monitor the health and performance of the infrastructure
  • Extensive experience in GIT version control, skillfully maintaining source code in GIT LAB, with proficiency in tasks like pulling, pushing, and managing modifications and updates to repositories
  • Demonstrating proficiency in Amazon Web Services (AWS) and hands-on experience with AWS services such as EC2, ELB, S3, Glacier, IAM, EBS, and CloudWatch
  • Launching AWS EC2 instances, adding in target groups, establishing application load balancers, configuring auto-scaling using templates and ensuring high availability
  • Implementing container-based deployments through Docker, involving tasks like pulling Docker images and deploying docker containers
  • Managing Docker Containers, including actions like starting, stopping, killing, running, and port mapping
  • Familiar with Kubernetes to orchestrate the deployment, scaling, and management of Docker containers.

Linux Administrator

Dupont
Delaware, DE
11.2018 - 06.2021
  • Demonstrated proficiency in Linux administration, encompassing tasks such as user creation, group management, file administration, and the management of user access and privileges
  • Monitored infrastructure, system operations, and critical application services around the clock
  • Extracted information and statistics related to system capacity limits, data storage, and system utilization
  • Responded to critical outages and restoring services within the agreed-upon service levels
  • Installed and upgraded of packages and patches on RHEL servers using RPM and YUM
  • Familiarity with various run levels, experience of recovering root password on RHEL servers using single-user mode
  • Created templates for provisioning new VMs and meticulously taken snapshots before patching and decommissioning VMs to maintain system integrity
  • Expert level in troubleshooting and resolving system performance issues by fixing bottlenecks such as CPU, memory, and disk I/O using command tools for effective performance monitoring
  • Maintained various RAID levels, understanding the specific advantages, disadvantages, and requirements associated with each level, including mirroring, striping, and parity
  • Managed various file systems to optimize their benefits based on their specific characteristics, while ensured the overall consistency and integrity of the file systems
  • Created entries in FSTAB for the permanent mounting of file systems
  • Hand-on with partitioning tools such as fdisk and gdisk for effective disk partitioning and formatted disk with appropriate filesystem
  • Set up an NFS server, configured permissions for NFS Share, and facilitated file sharing for NFS clients to access essential resources
  • Automated various day to day tasks, including user account creation, file system size monitoring, system resource monitoring, using Bash scripts
  • Implemented security measures, including firewall configuration and regular security audits
  • Managed system backups and implemented disaster recovery plans
  • Troubleshot and resolved system-related issues, ensuring minimal downtime
  • Conducted system performance tuning for optimal efficiency.

Linux Analyst

Xandr
NYC, USA
11.2017 - 10.2018
  • Installed hardware components and managed cabling
  • Addressed and resolved connectivity issues
  • Created and managed user accounts, adjusted user permissions, and maintained user and file systems
  • Assisted with data migration tasks using tools like tar and gzip, followed by SCP for the actual migration process
  • Examined system hardware, reviewed system logs, generated reports on file systems, and performed file manipulation
  • Implemented regular system backups according to established policies
  • Monitored the overall health of servers and promptly escalated issues to the relevant teams
  • Established SSH key-based authentication for enhanced security
  • Identified and resolved configuration-related issues and other system discrepancies through thorough analysis
  • Created Bash scripts to efficiently obtain essential system-related information and analyzed.

Education

High school -

D A Public School
01.2010

Skills

  • VMware
  • VCenter
  • VSphere
  • ESXi Host
  • Clustering
  • HA
  • DRS
  • NFS
  • DNS
  • DHCP
  • FTP
  • VSFTP
  • HTTP
  • Apache
  • Samba
  • PXE boot & Kick start
  • YUM
  • RPM
  • DNF
  • Apt-get
  • Patching
  • Deploying, configuring Servers
  • Kernel Tuning
  • Performance Management
  • Change Management
  • Incident management
  • Network Management
  • Troubleshooting
  • Disaster recovery
  • User Management
  • Operating Systems - CentOS, RHEL, Ubuntu
  • Gdisk
  • Fdisk
  • ILO & IDRAC
  • LVM
  • RAID
  • NAS
  • SAN
  • Ansible
  • Playbooks
  • Roles
  • Gitlab
  • Active directory & LDAP
  • IAM
  • EC2
  • Cloud Formation
  • EBS
  • EFS
  • S3
  • Glacier
  • Docker
  • Jira
  • SNOW
  • Splunk
  • Dynatrace

Timeline

Linux Operations Engineer

IBM
07.2021 - Current

Linux Administrator

Dupont
11.2018 - 06.2021

Linux Analyst

Xandr
11.2017 - 10.2018

High school -

D A Public School

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Saad Raees