Khurram N

Senior Systems Engineer

Saudi Aramco Jubail Refinery Company (SASREF)

May 2007 - Nov 2025 • 18 yrs 6 mos

• Successfully rebuilt enterprise-grade Active Directory and Microsoft Exchange infrastructure from scratch, ensuring secure authentication, high availability, and business continuity. • Reduced downtime by 40% with resilient infrastructure and HA solutions. • Cut infrastructure costs by 20% through virtualization and optimization. • Enhanced cybersecurity maturity by implementing IAM, PAM, and vulnerability management frameworks. • Designed and deployed mission-critical DMZ infrastructure for SAP external portals, enabling secure global operations. • Managed Enterprise Windows Server Environments, rebuilt Active Directory and Exchange infrastructures from scratch, and administered DNS, DHCP, and print servers to ensure high availability. • Architected and deployed high-availability enterprise infrastructure supporting 24/7 refinery operations, reducing downtime incidents by 40%. • Partnered with CISO office to strengthen cybersecurity posture, closing critical vulnerabilities and aligning with ISO 27001/NIST controls. • Designed and implemented secure DMZ architecture enabling SAP external vendor/supplier collaboration, improving operational efficiency. • Spearheaded cloud migration and virtualization projects (VMware, Hyper-V, Exchange HA), cutting infrastructure costs by 20%. • Established enterprise-wide backup & recovery frameworks (Commvault, Veeam, Druva), ensuring robust disaster recovery. • Automated routine system administration tasks with PowerShell, reducing manual effort by 35%. • Mentored IT engineers and enhanced ITIL-based processes, achieving measurable improvements in service delivery and user satisfaction