Windows Administration
Sajjad Haider Abbasi
Network and Security Specialist
Riyadh
Summary
Seeking a challenging role in a dynamic and innovative organization to leverage leadership skills and technical expertise in driving growth and success for the company while fostering professional development. Dedicated computer networking/security professional with a history of meeting company goals utilizing consistent and organized practices. Skilled in working under pressure and adapting to new situations and challenges to best enhance the organizational brand.
Overview
26
26
years of professional experience
1
1
Certification
7
7
years of post-secondary education
Work History
Sr. Manager NOC & Support
Global Connect Synergy (ISP)
05.2017 - 09.2024
- Ensure 24/7 uptime of the Network Operations Center (NOC) and Metro Ethernet Network, maintaining stability and seamless operations
- Lead and mentor team members, facilitating effective knowledge transfer and skill development
- Allocate Internet bandwidth and subnets to corporate clients, optimizing network performance
- Communicate and escalate major events and outages to relevant stakeholders promptly
- Configure and back up hardware, including servers, switches, and routers, to ensure reliability
- Create and audit documentation, including SOPs, to ensure accuracy
- Monitor network performance with Cacti, SolarWinds, and SYSLOG Server to resolve issues
- Manage escalation procedures between the NOC and stakeholders for timely resolution
- Maintain, support, and upgrade systems and applications to drive continuous improvement
- Recommend enhancements to boost organizational productivity and network efficiency.
- Established strong relationships with clients and stakeholders, ensuring long-term partnerships and repeat business.
- Implemented and developed operational standards, policies and procedures.
Manager – IP Core Networks
Satcomm (Pvt) Ltd (ISP)
12.2006 - 05.2017
- Led a team in the Network Operations Center (NOC) and Corporate Help Desk (CHD), improving team efficiency by 20% through optimized task assignments and training programs
- Ensured 24/7 uptime for the NOC, reducing network downtime by 15% and enhancing service reliability for corporate clients
- Led capacity planning and performance initiatives, boosting network efficiency by 30%
- Monitored and troubleshot Cisco routers and WAN links, resolving 95% of issues within 24 hours using advanced tools like SolarWinds and OpenNMS
- Managed DNS, proxy servers, and mail servers, implementing IP Firewall/NAT on Linux systems to enhance security and reduce unauthorized access by 25%
- Automated report generation with Linux shell scripts, reducing manual workload by 40%
- Managed bandwidth and IP pools for 200+ clients, optimizing performance
- Handled APNIC queries and successfully acquired IPv4 subnets, expanding network capabilities for new projects.
- Accomplished multiple tasks within established timeframes.
- Enhanced customer satisfaction by resolving disputes promptly, maintaining open lines of communication, and ensuring high-quality service delivery.
Senior Network Engineer
KASB Technology (ISP)
09.2000 - 08.2006
- Managed Cisco routers, access servers, DNS, proxies, mail servers, and WAN links
- Allocated bandwidth using Bandwidth Manager (NetEnforcer AC-202/10M)
- Managed registration, parking, hosting of websites, and email hosting for various clients
- Installed and configured radio modems and Aironet wireless communication devices
- Developed shell scripts on Linux to generate reports from system log files
- Implemented IP Firewall/NAT on Linux systems
- Configured MRTG to monitor WAN link and client bandwidth utilization
- Allocated IP pools for access servers, clients, and sites.
Supervisor Customer Support
CubeXS (ISP)
11.1998 - 09.2000
- Delivered technical support to dial-up and corporate users, achieving 90% customer satisfaction
- Optimized helpline schedules, boosting call resolution speed by 15%
- Trained new helpline members, reducing onboarding time by 30% and improving team readiness.
- Oversaw daily operations of the department, ensuring smooth workflow and timely completion of tasks.
- Applied strong leadership talents and problem-solving skills to maintain team efficiency and organize workflows.
Education
Master of Science - Computer Science
SZABIST
Karachi, Pakistan 08.2005 - 01.2008
Bachelor of Computer Science - Bachelor of Computer Science
Newports Institute of Communications And Economics
Karachi, Pakistan 12.2001 - 12.2004
Higher School Certificate - Science
Govt. College Gulshan-e-Iqbal
Karachi, Pakistan 05.1994 - 05.1995
Secondary School Certificate - Science
National High School
Karachi, Pakistan 1992 - 1993
Skills
Strategic Planning
Professional Highlights
- Over 15 years of experience in the dynamic field of Information Technology
- Proficient in installing, configuring, and implementing ISPs, call centers, data networks, LANs, and VPN tunnels
- Expert in managing and supporting diverse networks and systems, including troubleshooting, consulting, and training
- Strong team leadership skills with a proven ability to lead and motivate teams
- Skilled at collaborating effectively with team members, developers, support, and sales personnel
- Dedicated and hardworking, with a strong commitment to achieving excellent results
- Thrives under pressure, maintaining focus and efficiency even in challenging situations
- Adaptable to changes and pressures in the workplace
- Quick learner with a passion for sharing knowledge and expertise
Key Technical Expertise
- Network Administration
- System Administration
- Project Management
- Network and System Security Management
Technical Knowledge
MS SQL (2005 and newer), Oracle 10g (Linux), Asterisk, Elastix, Issabel, Linksys (SPA 400, SPA 8000), X-Lite, Cisco Router (2900, 2800, 1800 Series), Mikrotik Router (hEX lite, hEX, hEX S, RB3011UiAS-RM, RB4011iGS+RM, CCR1036-12G-4S-EM, CCR2216-1G-12XS-2XQ Series), Cisco Switches (2900, 2000, Nexus 3064PQ, Nexus 6001P Series), Cisco Access Server (AS 5300), Arris CMTS, ADC CMTS, Linksys Wireless Routers, Aerohive Access Points, Subnetting/VLSM, Bandwidth Management (Allot NetEnforcer AC-202), Static Routing (Cisco, Linux and Windows), Red Hat, Fedora, CentOS and Ubuntu, Windows 10/11, Windows Server 2019 or newer, JavaScript, HTML, CSS, ASP.Net (C#), PHP, Python, Linux Bash Scripting, VRRP, HSRP, GLBP, RIP, OSPF, EIGRP, BGP, Fortinet Fortigate, Cisco ASAv, IPSec, Remote Access VPN, Site-to-Site VPN, Packet Filtering, SSL, Digital Certificates, Two-Factor Authentication, IIS, Apache, DNS, DHCP, Samba, Squid, Spamassassin, ClamAV, Email Servers (MS Exchange, Postfix, Zimbra), Network Monitoring (MRTG, PRTG, Cacti, OpenNMS, Zenoss), Domain Registration, Hosting, WordPress, DotNetNuke, Hyper-V, VMware Workstation, ESXi, Oracle VirtualBox
Technical Trainings
- Geeks Hub, Implementing Cisco IP MPLS Networks, 2016
- Geeks Hub, Deploying Cisco ASA Firewall Solutions, 2016
- Geeks Hub, Certified Ethical Hacker, 2016
- CTTC, CCNP Course, 2013
- Onwire, MCITP – Enterprise Administrator Track 2008, 2011
- APNIC, Routing / IPv6 Workshop, 2007
- APNIC, Internet Resource Management Essentials, 2007
- CTTC, Microsoft Exchange 2000 Course, 2003
- Worldtel (In-house), Satellite Communication – VSAT, 2002
- CTTC, CCNA 2.0 Course, 2002
- APTECH, 6 Months Short Course – Programming, 2001
- Orasoft, 6 Months Specialized Diploma in Oracle, 1999
- Professional's Inn, 6 Months Diploma in Windows NT, 1998
- AT&T, 2 Years Diploma in Computer Science, 1998
Technical Certifications
- Fortinet, Inc. (NSE-7), 2024
- Cisco Systems, Inc., 2014
- Microsoft (MCP), 2014
- Microsoft (MCITP), 2011
- Microsoft (MCTS), 2011
- Juniper Networks, 2009
- Oracle Corporation, 2000
References
References will be furnished if required.
Personal Information
- Passport Number: CV1012863
- Passport Expiry Date: 2029
- NIC Number: 42201-3602286-5
- Father's Name: Ghulam Ali Abbasi
- Nationality: Pakistani
- Marital Status: Married
Software
Linux Administration
Solarwinds (Network Performance Monitor)
Cacti
PRTG
MRTG
VMware Workstation
VMware ESXi
DNS
DHCP
Issabel
HTML
CSS
PHP
Zimbra
Languages
Sindhi, Urdu
Native language
English
Upper intermediate
B2
Certification
Certified NSE-7, Fortinet, Inc. - 2024
Interests
Travelling
Movies
Football
Games
Timeline
Sr. Manager NOC & Support
Global Connect Synergy (ISP)
05.2017 - 09.2024
Manager – IP Core Networks
Satcomm (Pvt) Ltd (ISP)
12.2006 - 05.2017
Master of Science - Computer Science
SZABIST
08.2005 - 01.2008
Bachelor of Computer Science - Bachelor of Computer Science
Newports Institute of Communications And Economics
12.2001 - 12.2004
Senior Network Engineer
KASB Technology (ISP)
09.2000 - 08.2006
Supervisor Customer Support
CubeXS (ISP)
11.1998 - 09.2000
Higher School Certificate - Science
Govt. College Gulshan-e-Iqbal
05.1994 - 05.1995
Secondary School Certificate - Science
National High School
1992 - 1993
Certified NSE-7, Fortinet, Inc. - 2024
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