Shammi Alam - System administrator - Tata Consultancy Services

Summary

Skilled Linux System Administrator with 5 years of experience in system administration and maintenance. Expertise in managing user workstations and troubleshooting hardware, software, and network issues. Seeking a challenging position to leverage technical skills and embrace new technologies.

Overview

5

years of professional experience

1

Certification

Work History

System administrator

Tata Consultancy Services

Noida, India

01.2022 - Current

Manage and maintain over 100+ enterprise Linux servers (RHEL 8/9 & Ubuntu) across mixed on-premises, 3 infrastructures (production, QA, Dev), guaranteeing 99.95% infrastructure uptime
Resolve Critical (P2/P3) incidents within rigid SLA timeframes, diagnosing complex kernel errors, network issues.
Supported 24/7 production server environments, managed incoming tickets via ServiceNow, and coordinated vendor communications to ensure timely issue resolution.
Conducted the decommissioning of obsolete utilities and servers to enhance operational efficiency.
Install, configure and manage of services such as DNS, NTP/Chronyd, HTTP, NFS, FTP, Sendmail, OpenLDAP etc.
Have experience on automation concepts like shell scripting and being capable of preparing scripts from a project perspective.
File system management, system upgrades, software patches using yum and rpm tools and creating YUM repository files for offline server.
Experience with logical volume management (LVM), analyzing the disk usage and creating disk partitions.
Installed, configured, and managed services including DNS, NTP/Chronyd, HTTP, NFS, FTP, Sendmail, and OpenLDAP to maintain operational efficiency.
Analyzing and interpreting system and application log files.
Knowledge of ITIL such as Incident Management, Problem Management and Change Management.
Configuring and Maintaining the Disk Quotas and ACLs (Access Control Lists) for users.
Write and maintain documentation such as instruction guides, troubleshooting procedures, incident process, SOW, Root cause analysis etc.
Wrote and maintained documentation for instruction guides, troubleshooting procedures, incident processes, SOW, and root cause analyses to enhance team knowledge and response times.
Schedule various regular, periodic, future and queue tasks by using crontab.
Install and configure SSH key-based authentication.
Process management, User management, file management, Disk management, memory management.
Utilized Active Directory to add/remove users, unlock accounts and reset passwords

Education

B. Tech - Computer Science

Amritsar Collage of Engineering And Technology

Amritsar, India

05-2021

Intermediate Certificate - PCM

Khrist Raja High School ,bettiah

Bettiah, India

03-2017

Skills

Operating Systems: Red Hat Enterprise Linux (RHEL) 8/9, CentOS, Ubuntu Server
Networking & Protocols: TCP/IP, DNS, DHCP, NFS, NIS, SAMBA, SSH, FTP, Firewall/iptables
Automation & Scripting: Bash Shell Scripting, Python
Tools & Infrastructure: Systemd, Cron, Nagios, ServiceNow
Storage & Web Servers: Logical Volume Manager (LVM), Ext4, XFS, Apache, Nginx

Virtualization & Cloud: VMware Citrix VDI, Oracle Virtualbox
Incident Management
Database: Installation and configuration experience in Access MySQL
Database: MySQL installation
Version Control: Git, Github