Linux Engineer Control Systems
Resume:
RAFIA CHOWDHURY
LINUX ENGINEER
Buffalo, NY (***) 800 - 2834 *****************@*****.***
PROFESSIONAL SUMMARY
With 5 years of experience in the IT industry, my current specialization is in the management and maintenance of the Linux Operating System. The practical expertise includes managing virtualization and cloud technologies, as well as assuring the security, dependability, and effectiveness of Linux servers and associated infrastructure. Additionally, my hands-on experience encompasses an array of DevOps tools such as automation using Ansible, AWS, and version control systems like GIT. My role encompasses a wide range of operational responsibilities including but not limited to network troubleshooting, user management, storage administration, system upgrades and patching, as well as provisioning and decommissioning of servers.
SKILLS
Operating Systems: Red Hat Enterprise, RHEL,
CentOS, Ubuntu.
Virtualization Tools: VMware, vSphere,
VMotion.
Public Cloud: AWS, VPC, EBS, EC2, S3,
IAM, CloudFront, CloudWatch.
Web Servers: Apache, HTTP, DHCP, FTP.
Monitoring Tools: Nagios, Prometheus,
Splunk.
Patching, Provisioning, Decommissioning.
Ticketing Systems: JIRA, Service Now, BMC
Remedy, Zendesk
Performance Tuning: System Tuning, Kernel
Tuning, Hardware Tuning.
Networking: TCP/IP, Subnets, TCPDUMP,
VPN, DNS, Routing.
Version Control: Git, Git LAB.
Automation: Ansible, Ansible Tower.
Containers: Docker
Storage Management: RAID, LVM, NFS.
Troubleshooting: ILO, IDRAC, BIOS
Active Directory, Open LDAP.
File System: Ext3, Ext4, Xfs.
Scripting: YAML
WORK HISTORY
Walmart SEP 2021 - CURRENT
LINUX ENGINEER Bentonville, Arkansas
Installed Linux Operating systems on blades (Dell PowerEdge/ HP ProLiant), demonstrating proficiency in resolving building process issues
Demonstrated strong experience with system management tools, logical file systems, and client/server environments
Configuring Logical Volume Manager (LVM) to provide more flexible storage space than traditional partitioning
Quickly responding to alerts generated by monitoring tools like Splunk, addressing bottlenecks promptly to ensure maximum uptime
Configuring ILO and IDRAC on HP and Dell servers for remote console access, firmware upgrades, and hardware failure resolution
Creating and executing Ansible playbook for system monitoring and logging, enabling proactive issue identification and reducing downtime
Performed regular security audits using Ansible, addressing vulnerabilities and maintaining a secure infrastructure environment
Launching EC2 instances, configuring, and managing object-based storage in AWS standard S3 buckets and archiving data in Glacier
Utilizing AWS CloudWatch to monitor AWS resources and applications, employing customized scripts for monitoring various applications, systems, and instance metrics
Created and implemented Change Requests upon completion of the approval process to mitigate change effects on the production environment
Managing container-based deployments using Docker, working with Docker images, Docker file.
Identified critical issues, assessed their impact, provided solutions, and documented Root Cause Analysis (RCA)
Sephora OCT 2019 - SEP 2021
IT Systems Administrator San Francisco, California
Demonstrated proficiency in Linux OS internals, encompassing file systems, storage, and process lifecycle, along with expertise in utilizing basic command-line diagnostic tools for system health
Operated and managed a hybrid environment comprising both physical and virtual Linux systems
Deployed Virtual Machines, VMware, ESXI hosts, and VCenter servers
Employed Tcpdump and Wireshark to monitor and analyze network traffic for effective diagnosis of network issues
Conducted patching, decommissioning, and vulnerability assessments
Managed, modified, and provided support for the Linux-based platform, covering operating systems, applications, security tools, and web servers
Utilized the GitLab code hosting platform for version control and collaboration, offering a centralized, integrated space for developers
Shared documentation privately and publicly within the environment, ensuring a version-controlled environment using GIT
Dynamically assigned IP addresses to devices on the network using the DHCP protocol
Performed administration of NFS, FTP, DHCP, PXE-Boot, NTP, and SMTP servers
Ensured the health of all network connections, switches, and ports through collaboration with other teams, including network and data center teams
Configured the SSH configuration file to enable password authentication
Established Network File Share (NFS) for file sharing in Linux-based networks
Achieved redundancy of data and better performance by configuring RAID levels while considering the client's budget.
Monitored disk availability, user process activity, system security, logs, CPU/Memory usage, and running programs
Modified kernel parameters through kernel tuning using the sysctl command
Utilized BMC Remedy to identify, diagnose, and resolve problems
Launched EC2 instances across various zones, associated EBS volumes, worked with Elastic File Systems to ensure enhanced visibility and ensure high availability
Implemented active back configuration in NIC bonding to manage high traffic and provided redundancy to data in mission-critical servers.
SMBC Capital Markets NOV 2018 – OCT 2019
LINUX ANALYST New York, NY
Deployed, modified, and troubleshoot computer hardware and software
Maintain comprehensive technical documentation and service catalog
Monitored different logs and generated reports as required by administrators and Engineers
Supported in installation and upgradation of third-party software
Execute routine system backups and archived data
Utilized Cron for scheduling various system tasks
Resolved user login issues and enhanced overall systems performance by regular monitoring
Efficiently handle Help Desk tickets within specified timelines
Provide technical assistance to customers via phone or email
Diagnose and resolve fundamental technical issues related to computers. EDUCATION
Bachelor 2022
Baruch Zicklin School of Business
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