Experience

• 

  Stc-saudinet

  Aug 2010 - Sept 2016

  Rhce certified linux system engineer

  STC Saudi Net (ISP), Nominum Vantio DNS Caching Servers.• Responsible for 16 DNS caches Servers.• Added more 8 Linux based servers in the project.• Upgradation of DNS caches Vantio based servers 4.3 to 5.1.• Maintaining hosting service with a domain manager with domain records.• Maintaining the MYSQL database of Saudi net, creating new database, user administrator, backup, performance, replication, migration, and tuning.• Troubleshooting all issues related to Saudi net-like removing subnets from spam, resolving mail issues, resolving FTP issues and user administration in FTP server, and maintaining bind DNS service.• Hardware/software configuration and management.• Operating System used in Saudi net Linux, Centos, Freebsd, Ubuntu, Suse, and windows.• Install the software, apply patches, manage file systems, monitor performance and troubleshoot alerts from commercial, open-source, and locally developed monitoring tools.• System failure analysis and recovery.• Maintain server up-time, rollouts of new web sites, testing of new developments and making them live, domain management and setting up new servers and working closely with colleagues on the web development teams.My Achievement: 1). Mydns This application is used for DNS hosting.2). Northstar This application is used to store the information of your networks like how many subnets you have and which IP is used for which service every Thing detailed.3). Nagios FAN This application is used for monitoring all devices like Servers, Load balancers, Routers, and switches by SMNP trap, FAN stands for Fully Automated Nagios. Show less

• 

  Stc

  Aug 2011 - Aug 2013

  Oss engineer (access7 & ngn networks)

  Worked as an OSS Engineer (AcceSS7 & NGN Networks).Windows:-• Monitor 5 Windows servers for performance issues and stability concerns.• Troubleshoot hardware and software issues as they arise.• Working and troubleshooting with all of the following SNMP, FTP, SSL, SSH, HTTP, HTTPS, telnet, SFTP, DNS, RDP, TCP, ICMP, and UDP.• Use knowledge of each of the above-listed technologies as related to the issue at hand.• Use and maintain zone file for name servers.• Used Remedy 6.0 (Action Request System) to track, resolve and escalate trouble tickets.• Administered and Configured MySQL.• Manage users and computer accounts.• Manage and monitor DHCP, Allocate IP addressing by using DHCP, Design DHCP scope.Linux/Unix:-• Daily checking the health of all 12 HP-UNIX (11i v1) & SUSE Linux 10 machines.• Monitoring the STC Landline and mobile links with the NGN and Access7 application.• Maintaining and troubleshooting of the applications CallTrace, Protocol Analysis, Traffic Monitor, and etc.• Devices Monitoring and troubleshooting like VSS TAP and Storage Array. • Daily updating the monitoring database for links.• Work on Hp Storage Ultrium 460, and DotHill storage. • Adding extra space to LUN’s in the SAN storage.• Updating tables in MYSQL, executing queries for crystal reports.• Maintaining and updating Trunk calls data and Trunk maps data.• Opening and closing tickets with the vendors by using BMC and Clarify software.• Adding new links, Deleting expired links and troubleshooting the Bad Links. • Filtering CDR’s (Call Data Records) as per STC requirement through shell scripting. Show less

• 

  Stc

  Jun 2015 - Dec 2020

  Working as an OSS Systems engineer.• Install and Commission operating systems like Linux RHEL, CentOS, Solaris 8-9-10, SUSE Linux and Windows family servers and set security benchmarks as per the need of NMS (Network Management Systems).• Installing client software’s on client workstations with correct plugins and optimization, Applying new SCR (Secured Connection Request) to enable TCP/UDP ports used by the respective applications in order to establish a secured connection between the client and application server.• Providing 24x7 support for the below listed four NMS systems and take necessary action to solve the issue within the SLA time.• Providing primary support (Tier1 and Tier2) for the below NMS systems. • ZMS (Zhone Management System).• DDN (Digital Data Networks).• LT-Navis Core (Lucent Navis Core Element Management System).• Nortel MDM (Nortel Multiservice Data Manager). Show less Worked at STC VAS Department, Vantrix CAS-MMS System (Content Adaptation System):-• This CAS-MMS System benefits to 0.7 million STC users daily who uses MMS (Multimedia Messaging Service) service.• Performing Daily/Administration Task on the whole system.• Maintenance and troubleshooting of 35 Linux servers plus two F5 BIG-IP LTM Load Balancers.• Updating monthly for the mobile devices which are newly come into the market.• Troubleshooting and analysis of the systems logs for the root cause of the problem, whether it may be from hardware issue or software issue. Show less Worked at STC-SaudiNet (ISP), Implementation of Nominum NPS (Network Protection System).• Implementation on NPS (Network Protection System) system in STC.• NPS is built to block the BotNet virus and get statistics of DNS queries of all STC network throughout the Kingdome of (Saudi Arabia).• Hardware 3 HP DL series servers with the capacity of 10TB.• Installed RedHat (RHEL 6.5) with RAID 1+0 and with specified LVM.• Calculating and assigning IP’s to the servers with proper subnetting. • Implementation of private and public networks on all these servers with a static route.• Following with the STC Security team to open specific ports and checking the efficiency through the ports.• Assembling cables to connect the new servers and troubleshooting with the switching team to get access of private and public networks.• Provided support and editing to the documents PAT, LLD, HLD, and SOW.• Integration of the new system with the old DNS caching system. Show less

  • Linux/Unix Senior Systems Engineer

    May 2016 - Dec 2020

  • Senior Systems Engineer

    Apr 2014 - Apr 2016

  • Senior Implementation Engineer

    Jun 2015 - Dec 2015
• 

  Gosi - general organization for social insurance

  Dec 2020 - now

  Team Lead for OS Team | PASS Department.

  • Team Lead - OS | PASS Department

    Mar 2022 - now

  • Senior System Engineer

    Dec 2020 - Apr 2022