SUMMARY

• Motivated & result - oriented professional having over five years of experience in the IT industry who excels Confidential managing and executing mainly Linux System administration, with good working knowledge of AWS and DevOps tools (Ansible, Git, Docker/Kubernetes). Seeking role as a team player to use and expand my knowledge and help the organization meet its objectives.

TECHNICAL SKILLS

• RHEL/CentOS management
• VMware
• OS/Network configuration, troubleshooting
• PXE Boot/kickstart
• NFS, FTP
• TCP/IP
• Firewall/Iptables
• SSH
• RAID levels/LVM
• Package Management (YUM/RPM)
• User/Group Administration
• File System Management
• Cron Jobs
• Bash Scripting
• Kernel Tuning
• Ansible
• Nagios
• AWS
• IAM
• GitHub
• Docker/Kubernetes
• Jenkins
• Tech-support, customer service

PROFESSIONAL EXPERIENCE

Linux System Engineer

Confidential

Responsibilities:

• Experienced in provisioning and maintaining bare metal and virtual servers.
• Deployed, monitored and managed RHEL 5,6 and CentOS-based infrastructure.
• Experience with virtualization - VMware ESXi, vSphere client and vCentre.
• Experience in provisioning, patching and maintaining virtual servers through Red Hat Satellite, opened and resolved tickets related to system performance with Red Hat.
• Kernel tuning consistent with App and Database teams’ requirements.
• Created, maintained and synchronized YUM/RPM repos and performed managing, installing, and, upgrading software packages using YUM and RPM.
• Participated in break/fix, patching, migration and decommissioning of Linux servers.
• Performed routine backups using backup tools (rsync, tar, snapshots) and automated the whole process.
• Managed network connections through iptables, Firewall, SELinux and monitored network traffic/issues using wireshark and tcpdump.
• Trouble shooting critical OS issues related to performance, Network, NFS shares and File system.
• Used Shell scripts to automate, customize administrative repetitive administrative tasks
• Scheduled Cronjobs to monitor and maintain system activities.
• Configured/managed various services - DHCP, HTTP, SSH, NTP, NIS, DNS, MySQL, NFS.
• Configured SSH key-based authentication and resolved issues associated with SSH service.
• Experience with storage systems (SAN, NAS, DAS, ISCSI), configured RAID levels, configured storage management using LVM.
• Performed user management, patches, system monitoring, software installation and configuration using Ansible ad-hoc commands and automated with playbooks.
• Coordinated with DevOps engineers to build Docker containers, moving monolithic apps to microservices, enhancing developer workflow, increasing scalability.
• Experience managing Docker repository, files/compose, images and running containers.
• Used Kubernetes for container orchestration and management.
• Used GIT for managing playbooks, scripts, Docker files/images and application configurations files
• Working knowledge of GIT, pulling/pushing, cloning, branching and merging.
• Monitored and secured CI/CD server (Jenkins).
• Managed and monitored cloud infrastructure (AWS) in TEST and QA environments.
• Provisioned EC2, S3, EBS, EFS, ELB, configured IAM and managed access and permissions using roles.
• Used Nagios to monitor network parameters and server resources maintaining uptime of 99.8% for the systems.
• Collaborating with other teams (app, database, break/fix, security) for effective solutions
• Provided cost-effective, secure and fit-for-purpose solutions as per needs.
• Experienced in designing and documenting SOPs (Standard Operating Procedures) for system administration activities.
• Provided on-call/weekend support and resolved tickets through Remedy

Linux System Administrator

Confidential, Piscataway, NJ

Responsibilities:

• Installation and configuration of various Linux flavors like Red Hat Enterprise Linux and CentOS.
• Experience with server management technologies i.e. ILO, iDRAC.
• Provisioned and maintained virtual machines, working knowledge of VMware (vShpere, ESXi 5.5. ESXi 6.7)
• Worked on servers decommissioning and migration projects.
• Configuration and monitoring of infrastructure servers like NFS, DNS, NTP, FTP etc.
• Configured, installed and updated packages using RPM and YUM package management
• Experience with different file systems i.e. EXT2, EXT3, EXT4, XFS.
• Experience managing file sharing servers. i.e. NFS, SAMBA.
• Good understanding of network protocols i.e. TCP/IP, UDP, IPv4 and their configuration.
• Configured NIC/Channel bonding for redundancy and bandwidth.
• Created logical volumes, extending the file systems using LVM.
• User and group administration, managing permissions and privileges by configuring sudoers file.
• Scheduled jobs using crontab, managed routine backups, enabled network and system logging of servers for maintenance.
• Collaborated with security and network teams to secure the infrastructure through patching, network configuration.
• Investigated critical issues, determined impact, provided solution and documented RCA when required.
• Monitored servers using Nagios.
• Documenting processes, best practices and troubleshooting procedures
• Participated in a 24x7 on-call rotation.

Linux Technician

Confidential, NY

Responsibilities:

• Software and Hardware installation
• Performed Linux administrative tasks on both CentOS and Ubuntu Servers.
• Monitored System performance such as CPU, Memory, Disk and Swap space usage.
• Usage of activity commands like TOP, PS, SAR to monitor system health and troubleshoot.
• Creating backups, moving and restoring using gzip and tar ball.
• Resolved onsite issues i.e. PC Setup and configurations, network connections, PC diagnostic issues, printer problems.
• Microsoft Office installation and troubleshooting including network cabling.
• Installed and configured 3rd party software on both workstations and servers.
• Provided user support and assisted in problem resolution