We provide IT Staff Augmentation Services!

Linux System Administrator Resume

Greenbelt, MD

SUMMARY:

  • Highly skilled in network troubleshooting for Unix {Oracle Solaris & Red Hat Linux} and Microsoft Windows server operating systems.
  • Possess creative problem - solving capabilities to work efficiently during intense situations.
  • Solutions-driven and highly motivated and analytical candidate with experience in system maintenance, network security and 24x7 production, and maintenance support.
  • A fast pace learner with adaptability for changing demands in any high-volume or low-volume environment.
  • Ambitious and diligent in supporting teamwork.
  • Command substantial work ethics.
  • Possess great supervision abilities and excellent interpersonal, written and oral communication skills.
  • Gifted with strong design skills and great attitude when working independently or with a team of ex perts.

TECHNICAL SKILLS & ABILITIES:

Operating Systems: Oracle Solaris 10, Windows Server 2008, Linux (Red Hat 6/7 & Centos 6/7, Ubuntu)

Windows: Vista, 7, 8, XP professional.

Hardware/Software: VMware/VSphere, ESXi, KVM, VMware Workstation 11,

Programming Languages: AWK, SED, UNIX Bash Shell & Bourne Shell scripting

PROFESSIONAL TECHNICAL EXPERIENCE:

Confidential, Greenbelt, MD

LINUX System Administrator

Responsibilities:

  • Automate system configuration and application deployment.
  • Configure HAProxy and created a minion file to test in the development environment for automation.
  • Support, maintain and administer diverse networks and environments.
  • Support, maintain and administer physical and virtual servers.
  • Using vagrant for building and managing virtual machines for automation.
  • Using git to upload and update changes to my projects.
  • Experience using Git and Bitbucket to upload and track work status across multiple projects.
  • Working with NFS, HTTP, FTP on Linux server.
  • Work independently and in collaboration with the IT and development teams.
  • Support an internal business help desk, including break/fix, access, and provisioning using Jira ticketing system.
  • Research, document, writing internal wikis using confluence, and implement software, hardware, and architectural solutions.
  • Keep up to date with industry best practices in maintaining system security.
  • Perform security patches on both system OS and all installed applications.
  • Performed day - to-day Systems Administration activities such as management of user accounts and security management using Active Directory, Disk Management, Package Installation, Storage Management and disaster recovery.
  • Work closely with respective web development teams to support web applications and aid in deployments.
  • Working on migrating the current infrastructure to AWS Cloud.
  • Maintain, develop and upgrade existing systems.
  • Install and integrate Mod security with current infrastructure, created a role for Mod security, tested in my local environment to prepare it for automation.

Confidential, Reston, Virginia

LINUX/UNIX System Administrator

Responsibilities:

  • Introducing Oracle Solaris 10, Centos 6.4, Red Hat Enterprise Linux 6.4 to the LAN; operating system installation and configuration via standard and advanced.
  • Perform security patches on both system OS and all installed applications.
  • Process any security policy changes as per security scan results.
  • Maintain proper documentation for all installed applications.
  • Set up, configure and troubleshoot TCP/IP, DHCP, DNS, NFS, CIFS, and Samba servers in a multi-platform LAN.
  • Set up common protocols such as SNMP, HTTP, HTTPS, SMTP, NTP, DNS, TCP/IP and FTP.
  • Strong understanding of Linux based firewall technologies.
  • Analyze the security vulnerabilities-Analyze and provide the LOE, perform necessary steps to mitigate the risk by working with vendors to get the patches and design and implement workarounds in case where there are no patches to make severs/applications secure.
  • Effectively work with application vendors to resolve issues and to request enhancements.
  • Work closely with respective web development teams to support web applications and aid in deployments.
  • Execute User and Group Administration while providing Logical Security Administration to users or file systems using; RBAC, Sudo, or Access Control List (ACL).
  • Provide all levels of OS support for all servers.
  • Monitoring and log management on UNIX and Windows servers, including processes, core/crash dump, and swap management, with password recovery and performance tuning.
  • Use bash shell scripting to schedule and automate processes, using cron jobs, including full and incremental backups using tar, cpio, and ufsdump; migrate and enlarge file systems on Oracle Solaris 10 using fssnap.
  • Knowledge on Bourne/Korn shell scripting and have worked with developers on related projects.
  • Setup a domain and an active directory on a Windows 2008 server; install and configure a samba server on Oracle Solaris 10, Centos 6.4, Red Hat Enterprise Linux 6.4, and mapping to the Windows 2008 server.
  • Perform multi-platform volume management using SVM, LVM, ZFS volume manager, NAS, and VERITAS storage foundation 6.01; installed and configured a LAN wide NAS (Free NAS) used for creating LUNs and attaching to Windows 2008 servers and to Oracle Solaris 10 using iSCSi initiator.
  • Logical Volume Partitioning and Managements.
  • Experience using Git and Bitbucket to upload and track work status across multiple projects.
  • Configuration/Networking Protocols (DNS, NAT, SSL, TCP/IP, IPv4, UDP)
  • Experience using YUM and RPM for package management.
  • Experience on IBM Remedy ticketing system, JIRA, Zendesk, Confluence. Able to assign, open and close tickets
  • Managing swap configuration.
  • Responsible for data management using native Solaris utilities for archiving, compression backup and restore.
  • Configure Apache and MySQL on a Solaris 10 for virtual and web hosting, building and hosting. Building and hosting websites; configure web hosting company DNS settings: install and configure Samba for quick publishing using a third-party web page maker.
  • Participating in root-cause analysis of recurring issues, system backup and security setup. Provide 24X7 support in Production Testing and Development environments.
  • Supporting system users and troubleshooting system issues. Document solutions for future .
  • Perform other duties as assigned.

Confidential, Hanover, MD

Unix/Linux System Administrator

Responsibilities:

  • Performed day-to-day Systems Administration activities such as User Administration and Security Management, Disk Management, Package Installation, Storage Management and disaster recovery.
  • Provided IT support services, included network support plans, managed services, network installation and integration, security and project consulting solutions.
  • Provided first and second line support to users and resolved critical issues.
  • Experience using Git and Bitbucket to upload and track work status across multiple projects.
  • Assisted remote users by troubleshooting and fixing problems relating to LAN and WAN technologies.
  • Responsible for installing, configuring and maintaining of Oracle Solaris 10 and Red Hat Linux systems.
  • Maintain, develop and upgrade existing systems.
  • Maintain ftp server with over 30 scheduled cronjobs for file transfer to external sites.
  • Perform application software installations, upgrades and troubleshooting.
  • Experience using virtualization technologies such as VMware and KVM.
  • Set up, configured and trouble shoot TCP/IP, DHCP, DNS, NFS, CIFS and SAMBA servers in a multiplatform LAN.
  • Monitoring and log management on UNIX and Linux servers, including processes, crash and swap management, with password recovery and performance tuning.
  • Hardening, Patching (Solaris 10 servers using 10-Recommended patches), and upgrades (release) using single user mode and on production servers.
  • Troubleshooting Solaris 10 issues emanating from hardware and software related and configuration issues.
  • Ensured backups are completed successfully.
  • Performed 2 nd and 3rd level support of Redhat Linux and Oracle Solaris UNIX operating systems and associated applications.

Confidential, Houston, TX

Linux Administrator

Responsibilities:

  • Installation and administration of RHEL 4.0/5.0 and Centos 5.
  • Configured kickstart server and updating and applying patches to the servers using proxy server.
  • Remote system administration using tools like SSH, Telnet, and Rlogin.
  • Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
  • Automation of jobs through Crontab and AutoSys.
  • Applied appropriate support packages/patches to maintain system integrity.
  • Performed capacity analysis, monitored and controlled disk space usage on systems.
  • Management and monitoring of various services using Solaris Service Management Facility and Service Administration.

Hire Now