Multiplayer Gaming
Kaleem Mohammed
Sr. Network Officer
Riyadh
Summary
Senior IT Security Expert with 15+ years experience. Proficient in risk assessment, threat modeling, and compliance. Proven leader of high-performing security teams. Deep knowledge of Fortinet, Qualys, and Mimecast. Dedicated to delivering secure IT infrastructure.
Overview
2025
2025
years of professional experience
3
3
years of post-secondary education
8
8
Certifications
4
4
Languages
Work History
Sr. Network Officer
Abdulrehman Al-Gosaibi Co.
07.2022 - Current
- Configured FortiGate NGFW in HA mode with IPS, WAF, DDoS, DNS Filtering, and App Control for enhanced security.
- Centralized security management and policy enforcement via FortiManager.
- Utilized FortiAnalyzer for security event logging, analysis, and reporting.
- Integrated FortiAuthenticator with MFA and other security solutions.
- Deployed FortiNDR for advanced network detection and response.
- Implemented FortiNAC for network access control and visibility.
- Secured web apps with FortiWeb against web-based threats.
- Monitored threats proactively with FortiSIEM for enhanced response.
- Conducted XDR investigations, sandboxing, and DLP.
- Managed Qualys VMDR for vulnerability management and response.
- Conducted penetration testing following OWASP guidelines; supported ISO 27001 compliance.
- Designed AWS DR Plan, incorporating Active Sync, VPC, EC2, S3, CloudWatch, and IAM.
- Configured Veeam for reliable data backup and recovery.
- Managed Veritas Enterprise Vault for data archiving.
- Secured email with Mimecast Gateway.
- Delivered security awareness training via KnowBe4.
- Maintained critical data center infrastructure (servers, storage, network).
- Administered VMware ESXi, Hyper-V, and Exchange Server 2016 environments.
- Managed Active Directory, Group Policy, and Office 365.
- Utilized ManageEngine ServiceDesk Plus for IT service management.
- Created network diagrams in draw.io; managed Unifi WiFi and HPE Aruba switches.
- Coordinated with SOC and vendor TAC to resolve incidents within SLA.
- Collaborated with branch IT for consistent operations.
- Mentored junior staff, enhancing their technical skills.
- Conducted operational reviews and reported findings with recommendations.
Sr. Network Engineer
Digital Technology Co.
6 2016 - 07.2022
- Managed ISP's Core Network operations (Cisco 7206 PE).
- Implemented L2/L3 Advanced Technical Solutions (IPVPN, L2VPN, L3VPN, MPLS, VPLS, L2PV3 Integrations).
- Configured vPC, VXLAN BGP (EVPN-L2VNI, and EVPN L3VNI) in a data center environment.
- Configured and Managed Routing Protocols BGP, RIP, OSPF, and EIGRP.
- Configured and managed inter-VLAN routing, VLAN, VTP, STP, RSTP, MSTP, EtherChannel, Stacking, and VSS.
- Configured and Managed Redundancy Protocols (HSRP, VRRP, and GLBP).
- Configured and Managed VPN (DMVPN, IPsec, SSL, and PPTP).
- Implemented Cisco Wireless LAN Controller High Availability.
- configuration at multi-vendor platform level (FortiNet, SonicWall, MikroTik, and WatchGuard).
- Managed DTC RIPE account for ASN, IPv4/IPv6 Allocation, Reverse DNS, and Servers Delegations.
- Provided complete, end-to-end engineering and installation of route-based IP network solutions.
- Performed complex network changes and implementations.
- Liaised with project management teams, third-line engineers, and service desk engineers on regular basis.
- Contributed to implementation and support of SNMP monitoring software (CACTI, PRTG, and Zabbix).
- Generated Switch, Router, and End device Memory and CPU utilization Reports.
- Analyzed and Visualized flow data statistics (NetFlow).
- Troubleshot Latency and CRC (Cyclic Redundancy Check) Errors.
- Performed live data migration SAN and NAS storage (HP P2000 and Synology RS2418+).
- Configured and Managed Custom Domains, SSL Certificate, MX, and SPF Record.
- Configured and Managed Failover Cluster for HA VMs, Checkpoints Merge, and Moving Virtual Machines.
- Provided detailed network diagrams (MS-Visio), process flow charts, and procedural guidelines.
Network Support Team Lead
Digital Technology Co.
04.2013 - 05.2016
- Provided level 3 support for all operational outages in the IP network.
- Troubleshot complex, multi-vendor network service provider issues.
- Performed diagnosing and resolving faults with network infrastructure, focusing on Cisco, MPLS, routing, and other ISP-related network technologies.
- Implemented and troubleshooted complex LAN/WAN infrastructure, including routing protocols EIGRP, OSPF, RIPv1, RIPv2, static, and Default route.
- Implemented security policies using ACL, IPSEC, SSL, VPN, and AAA.
- Attended customer calls and emails through the Customer Contact Center, answering inquiries, and resolving issues in a timely manner.
- Oversaw junior-level Support Engineer, directing work orders while monitoring performance metrics and consumer feedback.
- Dispatched technical team for any physical damage to network and followed up until the issue was resolved.
- Processed open tickets queue and updated the ticketing system regularly.
- Monitored fault and warning alarms, followed up on incidents, generated reports on availability and performance, and escalated to the corresponding technical team as necessary.
- Performed regular health checks for network elements.
- Performed backup schedules for Network Equipment.
- Analyzed and resolved issues related to information flow and content.
- Collaborated with IT areas to identify network relationships and functional requirements.
- Designed and implemented new solutions and improved resilience of the current environment.
- Prepared Proof of Concept for maintaining customer satisfaction in the future.
- Provided training and technical support for users with varying levels of IT knowledge and competence.
- Documented incidents and customer complaints
Network Support Engineer
ExterNetworks
12.2009 - 02.2013
- Assisted in the configuration and maintenance of network devices, such as routers and switches.
- Managed Wireless Connectivity by setting Channel, SSID, and Security.
- Configured and managed Antivirus/Anti-Spyware Program, Hard-Drive Backup, and PC Tune-Up.
- Undertaken capacity management and audit of IP addressing and hosted devices within data centers.
- Monitored network performance and resolved connectivity issues.
- Troubleshoot printers (LaserJet, inkjet, and dot matrix printers).
- Collaborated with senior engineers to improve IT processes and procedures.
- Documented network problems and resolution for future reference.
- Created spreadsheets using Microsoft Excel for daily, weekly, and monthly reporting.
Education
Bachelor of Science - Computer Science
Osmania University
03.2006 - 04.2009
Skills
TCP/IP protocol
Certification
CISCO - CCNA (200-301)
Additional Information
Cisco Router Series (7200 PE, ISR 4300, ISR G2 3900 & ISR G2 2900)
Cisco Nexus Switch Series (7000, 5000 & 2000)
Cisco Switch Series (Cisco ME, Catalyst 6500, 4500, 3700, 3800, 3600 & 2900)
Cisco Wireless LAN Controller (2504, 5508 & 5520)
Cisco Wireless AP (Aironet 1840, WAP321 & AP1142)
Aruba Switches (Instant On 1930, CX 6200, 3810, 2930F & 2930M)
FortiAuthenticator 300F
FortiNAC 600
FortiGate (601E, 500D, 401E & 200F)
FortiSwitch (524D, 448E-FPOE & 424E)
WatchGuard (M400, XTM 515 & XTM 505)
SonicWall (TZ270P, TZ570 & TZ670)
MikroTik (hex POE lite & RB2011iL-IN)
Physical Servers (Synology RS18017xs+ NAS, HPE MSA 2050 SAN, IBM X3650 M4, HPE DL380 Gen10 5218R & Dell PowerEdge R720)
Interests
Reading Books
Music
Declaration
I hereby declare that the above information is correct to the best of my
knowledge and belief.
Timeline
Fortinet Certified Associate
05-2024
Vulnerability Management - Foundation
05-2024
Fortinet Certified Fundamentals
03-2024
Sr. Network Officer
Abdulrehman Al-Gosaibi Co.
07.2022 - Current
RIPE NCC - Introduction to IPV6
03-2021
RIPE NCC - Database
02-2021
RIPE NCC - LIR
02-2021
Network Support Team Lead
Digital Technology Co.
04.2013 - 05.2016
CISCO - CCNP Enterprise (350-401 ENCOR & 300-410 ENARSI)
04-2012
CISCO - CCNA (200-301)
02-2011
Network Support Engineer
ExterNetworks
12.2009 - 02.2013
Bachelor of Science - Computer Science
Osmania University
03.2006 - 04.2009
Sr. Network Engineer
Digital Technology Co.
6 2016 - 07.2022
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