SUMMARY:

• Proficient with Red hat Enterprise Linux, Ubuntu, Solaris distributions and ( Confidential ) shell languages.
• Bash scripting, (Environmental variables), SQL scripting
• MySQL server installation and configuration, and MySQL DB administration
• Apache web s e rver, Apache Ds, Ldap, FTP server, NTP server, syslog server.
• Jboss Application Server 6/7
• SQL D eveloper, Jira, Nagios XI, Hipchat,
• On call rotation; Pager duty.
• Version control: GitHub
• Configuration Management: chef, Puppet.
• Monitoring tool: Nagios
• EC2, VPC, S3, RDS, Cloud Front, Route 53, VMware, VBox, KVM.
• Network Administration with extensive knowledge and experience with;
• Switches(Hubs), SOHO Routers, Cabling, Tcp - Ip, OSI model, SNMP, DHCP, SHCP, NAT, Subnet (Masking), FTP, NTP, SSH, HTTP(S), ICMP, LDAP, VPN, VLAN, LAN, WAN, ACL, LVM
• Experience with network security, hardware assembly, hardcoding and disassembly.

TECHNICAL SKILLS:

• 4+ years’ experience with Red hat enterprise Linux, U buntu and Solaris distributions of Linux.
• Proficient at multitasking, working under pres sure, and meetings trict datelines.
• Excellent technical, research, analytical and creative problem-solving skills with a passion and propensity for troubleshooting technical challenges.
• Ability to document and present processes, procedures, and assigned tasks in an organized manner
• Excellent verbal, written communication and presentation skills with both technical and non-technical audiences
• Strong organizational, planning, time management and project management skills with the ability to manage multiple projects and tasks in a fast-paced and changing environment.
• Able to work independently and to collaborate with team members to meet and exceed goals.
• Able to grasp new concepts quickly and adapt processes and techniques to meet business needs.
• Strong attention to detail with a focus on quality and accuracy

PROFESSIONAL EXPERIENCE:

AdministratorResponsibilities:

• Configured, and maintained all software and hardware peripheral on the network
• Built and maintained virtualization infrastructure (VMware, Virtual Box, KVM)
• Customized kickstart script to meet company’s guide for Installing and configuring virtual machines with kickstart.
• Installed and configured Nagios for monitoring network infrastructure and set traps for proactive maintenance
• Installed, configured and Implemented puppet to manage existing servers and automate the build/configuration of new servers.
• Daily examination of server’s log files for startup error messages to perform troubleshoot and repair.
• Implemented puppet to manage all existing servers and automate the build/configuration of new servers.
• Setup central log server to listen to log messages on entire network through Tcp.
• Installed, configured and administered FTP server for easy access to shared documents on network, and restricting unauthenticated access to file server.
• Installed, configured, tested and maintained operating systems, application software and system management tools.
• Configured DNS server and network interfaces to assign static Ip address, and set DHCP scope to prevent Ip conflict from DHCP server.
• High-precision time-protocol management such as configuring NTP services to all devices on local network
• Monitored operating environment, User Management; SUDO privileges and firewall configuration according to the environment policy on RHEL 5/6, CentOS6 and Ubuntu 14.04.
• Created and administered all users accounts and groups, home directories, and customized password policies to enhance security in work environment.
• Used ACL (access control list) and GID bit to set users and group permissions on files and directories during projects.
• Managed and developed deployment processes and documentation for operations team in GitHub Enterprise version 2.6
• Configured SElinux to enforce security policies, and application access to data on the system.
• Implemented iptables rules for services and ports, network security and port forwarding.
• Customized services run levels for automated startup of services during boot with minimal services when doing system maintenance.
• Developed and implemented bash scripts for secure remote administration via Putty/SSH.
• Used SSH utility to generate and securely export RSA key to trusted hosts for secure administration.
• Developed shell scripts for scheduled automated administration of services and monitoring of server’s performances and processes via Cron jobs.
• Developed and implemented shell scripts for the deployment and enforcement of environmental variables both locally and globally.
• Planed, organized, and documented complex system design activities and configure systems to be consistent with the company’s policies and procedures
• Managed and Administered disk usage and file system usage by creating, mounting and resizing logical volumes to manage system swap space and contain processes memory consumption
• Updated and installed kernels and all packages to improve applications, server’s security and performance.
• Configured custom repository for installation and updates of third party applications.
• Backup server hard drives and archived important files on daily basis for recovery of data in times of disaster.
• Performed daily encryption of remote server’s hard drives to prevent access to company’s information and confidential files in moments of hardware theft.
• Monitored infrastructure and per-operation processes to detect potential problems and recommend improvements.
• Documented all troubleshooting and repair procedures of hardware and software within infrastructure.
• Participated in the planning and implementation of HipChat server for important business discussions.
• Participated in vendor meetings and follow up on existing issues and reported status update to my manager.
• Provided follow-up status to client end-users in accordance with specified support policies and procedures.
• Managed installation, upgrade and deployment projects and provided on-site direction for network engineers
• Responded to emergency situations by providing support for all problems and remained involved in the resolution process.
• Participated in on-call support rotation and and worked during mission critical situations
• Implemented and developed solutions enabling Development and Operations to build and deploy a fully AWS virtualized infrastructure.
• Configured, and administered AWS EC2 instances and load balancers during server’s deployment and migration.
• Configured EC2 AMIs and relocated servers to different regions to ensure uninterrupted access to servers by clients nationwide, and to prevent system overload and a possible crash in moments of massive server access by clients.
• Solid understanding of Network routers, switches, L2, L3 of the OSI model. TCP/IP, SNMP, ICMP, DNS configuration on enterprise level.
• Setup and hardcoded managed switches to create VPN’s, and set Qos to prioritized company’s needs.
• Demonstrated good customer service skills when collecting data from users, perform initial repairs, or dispatch the request to the appropriate tier 2 team based on the service level agreements in place.