EXECUTIVE II, South
WorldCall Telecom Ltd (An Omantel Company)
Total des années d'expérience :7 years, 3 Mois
WorldCall Telecom Ltd. (An Omantel Company)
EXECUTIVE II, South, January 2009 - Present
Charged to oversee network operations, expansion and optimization of the network infrastructure along with route management and IP address scheme planning. Actively pursued the improvement of all aspects of server, network security and architecture to ensure optimal performance and service availability. Contributions include:
* Configured, implemented, and troubleshot Firewalls, SSL VPNs, Network Access Control Systems, Routers, Switches, broadband access gateways, email gateways, DNS, internet proxy and security solutions.
* Investigated and troubleshot technical problems of day to day operations of moderate to high complexity. Managed several incidences and normalized critical services following incidents, took damage control measures to limit its escalation. Following the incident, investigated incidents requiring in-depth analysis to identify root cause by looking at network traffic patterns, system logs, and audit files.
* Planed and implemented resource redundancy and security infrastructure in order to improve design and remove bottlenecks in the system and secure the environment. Executed planned downtime for up gradation with minimum services disruption.
* Architected and implemented virtualization infrastructure solution using VMware & Hyper-V and ensured availability, operability, integrity, and normal functionality of the host and virtualized guest servers in a secure environment.
* Designed, implemented, and troubleshot BGP peering sessions, Quality of Service and traffic shaping, queuing policies as per requirements and coordinated with clients and upstream providers for optimization.
* Coordinate with a team comprising of shift engineers to ensure seamless operations. Provided them with assistance and served as a mentor to them and field staff.
WorldCall Telecom Ltd. (An Omantel Company)
Engineer CMTS-NOC, South, July 2007-December 2008
Analyzed network load, monitored backup and recovery mechanisms, enforced established policies to avoid network downtime and incidents. Performed tuning, hardware upgrades, and optimization of the infrastructure resources.
* Configured and troubleshot network/system infrastructure and security devices, applications, and protocols in the Network Operations Center (NOC), for data/voice/video services. Administered core network comprised of Cisco 7200 series routers, catalyst 3600/3750 series switches and DOCSIS broadband routers by Big Band(TM), ARRIS(TM).
* Configured and administered of server farm that included smtp, pop, DNS, NMS, and access servers. Setup the Linux firewall using IP tables and fine tuning its policies based on requirement.
* Installed software upgrades, security patches, and monitored for intrusion signs by analyzing log data. Created and restored backup images using tools like Acronis and reconfigured services.
* Ensured stable and well performing system environment by researching and implementing innovative and automated approaches for system administration tasks using shell scripting, bash, PERL, and PHP.
* Assessed, recommended and implemented near and long term network capacity needs. Designed network enhancement/optimization strategies along with IP scheming and backup plan. Performed inbound and outbound internet traffic load balancing and server load balancing through DNS.
WorldCall Telecom Ltd. (An Omantel Company)
Assistant Engineer CMTS, South, September 2006 - June 2007
Hired to be part of 24/7/365 network of service provider operations team with accountability for monitoring the operations of network and system to ensure proper utilization of network resources.
* Administered and monitored Cisco routers, Catalyst Layer 2/3 switches, broadband routers, E3 circuits, STM-1/Gigabit links and tuning network elements for optimal performance. Coordinated with corporate clients, having layer-3 WAN connectivity with the company.
* Administered Solaris & Linux based System's performance hosting NMS, Proxy, mail, DNS, DHCP, FTP and other Linux based services. Regularly took backups of server's critical data, checked logs for malicious activity and signs of intrusion.
* Administered ISP operations over the broadband Hybrid Fiber Coax network and broadband voice access gateways.
* Provided Tier-three support to Call Center, technical and corporate support persons. Assisted Senior Engineer in all day to day operations and projects.
MBA, 2013, IBA Karachi.
B.S., Computer Science, July 2006, University of Karachi.