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mohamed nabil

@mohamednabil2

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Network security SME at BRAVANTIC who optimized firewall rules and migrated VPN to SASE with no downtime.

United Arab Emirates

Message

At BRAVANTIC, I safeguard critical systems for a UAE government finance entity, lead firewall policy reviews, and investigate security incidents. I optimized 300 firewall rules, removing 20% of redundant or overly permissive entries, and migrated VPN to SASE with no downtime.

At Klivvr, I owned security across a regulated fintech's hybrid infrastructure and led a 10-person team. I reduced critical and high-severity vulnerabilities by 80% within 12 months, and designed business continuity and disaster recovery plans validated through two drills with a four-hour RTO. I also teach security architecture through Udacity's Security Architect Nanodegree.

Experience

Work history, roles, and key accomplishments

Current

Cybersecurity Technical Tutor

Current

Udacity

Mar 2026 - Present (7 months)

Mentor learners in security architecture, IAM, network security architecture, incident response, business continuity, and risk classification through 1:1 sessions and technical deep dives.

Security Architecture IAM Network Security Incident Response Business Continuity Risk Classification

Current

Network Security SME

Current

Bravantic

Mar 2025 - Present (1 year 7 months)

Safeguard critical financial systems as network security subject matter expert, protecting enterprise infrastructure against external and internal threats. Lead firewall policy governance and rule reviews, enforce least-privilege access, and investigate security incidents.

Firewall Policy Design SASE Email Security DLP Network Security Incident Response Information Assurance Standard (CB UAE)

Current

Technical Trainer — Network Security

Current

Synledge

Jun 2023 - Present (3 years 4 months)

Deliver hands-on Palo Alto Networks training to enterprise IT teams covering firewall policy, VPN, and real-world troubleshooting scenarios.

Palo Alto Networks Firewall Policy Design VPN Troubleshooting

Head of IT Operations

Klivvr

Nov 2023 - Dec 2024 (1 year 1 month)

Owned the security posture of a regulated fintech's hybrid infrastructure, including network security, endpoint protection, vulnerability management, and access control. Led a 10-person team with a USD 1 million annual budget and reduced critical and high-severity vulnerabilities by 80% within 12 months.

Network Security Endpoint Protection Vulnerability Management Access Control DR BCP Cloud Migration ITSM PMO

Senior IT & Network Security Manager

Klivvr

Mar 2023 - Nov 2023 (8 months)

Led security operations across firewalls, IDS/IPS, centralized security monitoring, VPN, cloud security, and endpoint protection, covering 500 endpoints. Conducted risk assessments and drove control improvements across network architecture, data protection, and application security.

Firewalls IDS IPS SIEM VPN Cloud Security Endpoint Protection Risk Assessment Security Budget

Cybersecurity Team Lead

Honeywell

Jan 2023 - Mar 2023 (2 months)

Led cybersecurity solution design, RFP responses, BOQs, and cost estimates for enterprise security projects across firewalls, VPN, IDS/IPS, SIEM, and endpoint security. Delivered network security projects end to end, from scope and budget through deployment and client handover.

Solution Design RFP BOQ Cost Estimation Firewalls VPN IDS IPS SIEM Endpoint Security

Network & Security Head

CI Capital

May 2022 - Dec 2022 (7 months)

Led network and security operations for an investment bank, including internal control monitoring, security awareness, and enterprise security planning. Protected confidentiality, integrity, and availability across servers, databases, workstations, and multivendor network platforms.

Network Security Security Operations Internal Controls Security Awareness Patching Backup Verification L2 L3 Escalation

Network & Security Manager

Network International

Apr 2020 - Apr 2022 (2 years)

Designed and implemented PCI DSS controls including network segmentation, NAC, logging, and WAF; supported PCI DSS assessments and remediation of audit findings. Managed security operations across Cisco ASA, FortiGate, F5 WAF, Cisco ISE, and Aruba, closing 200 vulnerabilities and audit findings.

PCI DSS Network Segmentation NAC WAF Cisco ASA FortiGate Cisco ISE Aruba VPN VDI Change Management

Network & Security Supervisor Engineer

Network International

Mar 2018 - Apr 2020 (2 years 1 month)

Delivered firewall administration, VPN management, incident response, and PCI DSS implementation support across a multivendor security environment. Built office network spanning three floors.

Firewall Administration VPN Incident Response PCI DSS Multi Vendor

Network Engineer

TEData

May 2010 - Mar 2018 (7 years 10 months)

Designed data centre and high-availability infrastructure (Cisco Nexus, F5 BIG-IP LTM) and deployed Aruba ClearPass NAC for secure guest access. Administered firewall policies across Cisco, Juniper, and Fortinet; led engineers, set objectives, and trained new staff.