Mahammad Rafi
System Administrator
Dubai
Summary of Career
1. Excellent understanding of Linux system, Any shell / bash, sed / awk / grep / egrep , vi / vim / emacs, netstat, strace, ps / top / atop / dstat, grub boot config & systems rescue, fstab / disk labels, ext3 / ext4 / xfs, tcpdump / wireshark, IPtables, sysstat (sar / vmstat / iostat etc.), run-levels & startup scripts, sudo / chroot / chkrootkit / rkhunter.
2. • Configuration of Remote Access utilities, providing user access control on services like telnet, ftp and Ssh.
3. • Configuring, Maintaining and support the Infrastructure System, Disk Quotas and ACLs (Access Control Lists) for users.
4. • Configuring the LVM (Logical Volume Manager) and extended the logical volumes online.
5. • Having Application Protocols: Excellent understanding of SMTP, HTTP, HTTPS, FTP, IMAP and POP Email Archive. Storage: RAID, DAS, SAN, NAS fundamentals and Disaster recovery (DR) Management. Fundamentals: Excellent DNS & Networking Fundamentals, TCP/UDP, IP Routing, Firewalls, HA & Load Balancing Concepts, Virtualization, Backup manage, Failover and Failback and DHCP.
6. Perform windows administration activities including active directory administration, email administration, verifying server configurations are secure using automated tools, testing and installing o\s patches.
7. • Tools/Utilities: Nagios, Kickstart, Yum/apt-get, RPM, GIT/SVN. Applications: MySQL, Squid, Apache Web Server & Tomcat Server. Others: Regular expressions, excellent troubleshooting skills.
8. • Installs and configures Windows server, to include physical and virtual servers, Software Application, Active Directory Management, IIS and DNS and Office 365.
9. Managing Oracle Database Appliance Virtualized Platform, Validating, Troubleshooting ,Creating VMs, Vdiask, Repositories, ACFS (ASM Cluster File System).
10. • Virtualization with VMware ESXi with Virtual Center, VMotion, HyperV or other Linux hypervisor and experience in designing and implementing network systems as well as software components
Experience as Technical Support Engineer
Sharekhan Bnp Paribas Financial
22 August 2016
24 February 2017
• Manage Servers, Workstation, Computers, Laptops, Printers, Routers, Switches and existing Network application.
• Monitoring alerts using Nagios tool and following SLA.
• Performed daily audit on all systems, hardware, server resources and maintain weekly report.
• Reviewed server and application logs.
• Monitoring system resources, logs, disk usage, scheduling and monitoring backups.
• Support all LAN, WAN, VPN, Routers, Switch and networking configuration.
• Strong interpersonal, written and oral communication skills plus critical problem solving in high pressure.
Experience as System Administrator
Ashtech Infotech Pvt. Ltd
27 February 2017
08 June 2019
Full-time system administrator following initial consulting role to manage and maintain a mixed server environment (Windows/ Linux), ensuring 99.9% or better up-time. Evaluate, monitor and enhance IT infrastructure with an emphasis on availability, reliability, scalability, security, data confidentiality and system integrity.
• Operations ownership of projects using Linux and Linux application stacks (LAMP, Ruby, Postgres, Java, Python etc.).
• Responsible for architecting deployments for High Availability, scalability, Automation and
Implementation of permanent resolutions to prevent outages / downtime.
• Responsible for setup and uptime of large Linux deployments across multiple location.
• Manage and integrity protocols of system according to standards.
• Plan and execute service/site maintenance schedules.
• Patch and Data Management
• Incident analysis/RCAs/troubleshooting and identification of permanent resolutions.
• Setting up cron jobs for the user to deploy scripts on production server.
• Perform windows administration activities including: active directory administration, email administration, verifying server configurations are secure using automated tools, testing.
• Troubleshoots legacy Linux, Windows, ESX server, Software, OS (Hardware) and network issues. Independently utilizes all available resources to ensure timely resolution of server issues.
• Provide on-call 24 x 7 support on a rotating basis.
• Prepares documentation for support of new technologies, applications, OS, network.
• Increased team productivity and automated repetitive tasks by using batch files, Power Shell.
Oracle Database Appliance (ODA) X4 and X7:
• Managing Oracle Database Appliance Virtualized Platform.
• Validating and Troubleshooting Oracle Database Appliance.
• Creating VMs, Vdiask, Repositories, ACFS (ASM Cluster File System).
• Configuration Automatic Service Request (Internal and External).
• Managing and Installation OMCTool.
Bachelor 23 December 2024
I have completed My Computer Engineering from M. H Saboo Siddik College of Engineering, Mumbai.Intermediate 23 December 2024
Diploma in Information Technology