Mohamed Hussein Zaki

At Business-worx, I manage infrastructure across KSA, Egypt, Bahrain, and Iraq, supporting more than 100 distributed users. I redesigned firewall policies and deployed redundant connectivity, reducing network downtime by 94%.

I administer VMware ESXi servers, virtual machines, Active Directory, enterprise firewalls, backups, and disaster recovery. I’ve maintained 99%+ uptime, established a 30-minute RTO and one-hour RPO, and automated KPI and ClickUp reporting to save 15+ hours each week.

Through HackerOne and Bugcrowd, I’ve reported 50+ production vulnerabilities, including cloud misconfigurations, API credential leakage, XSS, CSRF, SQL injection, and authentication bypasses. My validated findings have achieved a 50% acceptance rate and earned $500+ in bug bounties.

I also bring hands-on penetration-testing and security-hardening experience across Windows Server, Linux Enterprise, wireless, mobile, and IoT environments. I use practical assessment, remediation, and incident-response work to make systems more resilient.