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Senior IT Support Engineer (L2/L3) with over 15 years of experience in enterprise systems administration, network infrastructure, and multi-site IT environments. Proven expertise in designing, implementing, and maintaining secure and reliable IT solutions across Windows Server, Active Directory, virtualization, and network security. Strong track record in improving system performance, strengthening security, and resolving complex technical issues in high-demand environments.

Senior IT Support Engineer (L2/L3) - Jembas Assistência Técnica Lda. - Angola

(2023-01)

• Reduced OS and application deployment time by 50% through automation using Windows Deployment Services (WDS)
• Designed and implemented centralized NAS backup with RAID, improving data availability and disaster recovery capability
• Strengthened endpoint security through GPO enforcement, reducing risk of unauthorized device usage and data exfiltration
• Improved remote troubleshooting efficiency by implementing BGInfo, significantly reducing diagnostic and resolution time
• Implemented iSCSI-based storage for CCTV systems, ensuring high availability and uninterrupted recording operations
• Administer enterprise infrastructure including Windows Server, Active Directory, DNS, and DHCP in a multi-site environment
• Manage Microsoft 365 environment (user provisioning, licensing, and security policies)
• Administer Exchange and internal hMailServer systems
• Design and manage pfSense firewall including NAT, VPN, and security policies
• Integrate Trustwave Web Marshal and Mail Marshal for web and email security
• Provide advanced L2/L3 troubleshooting across servers, networks, and applications
• Manage VoIP system (Elastix, Cisco IP Phones) and CCTV system (Milestone XProtect)
• Administer access control systems (IDEMIA biometric devices)

Computer Engineer / System & Network Administrator - King Faisal Military City - Saudi Arabia

(2008-01 - 2021-12)

• Led implementation of fiber optic infrastructure across multiple facilities, improving network performance and reliability
• Designed and deployed server clustering and database mirroring solutions, ensuring high availability and minimal downtime
• Centralized IT systems across departments, improving operational efficiency and system manageability
• Implemented enterprise-grade NAS backup with RAID, strengthening data protection and system resilience
• Established dedicated connectivity for biometric systems, improving attendance system reliability and performance
• Administer Windows Server (2008–2016) and SQL Server environments
• Manage Active Directory, DNS, DHCP, VPN, and Group Policy
• Maintain network infrastructure including switches, routers, and structured cabling
• Implement and monitor network security systems (firewalls, authentication, intrusion detection)
• Perform preventive and corrective maintenance to ensure system stability
• Support enterprise IT operations in a large-scale military environment

Systems / Network Administrator - Zahran Operation and Maintenance Co. Ltd. - Saudi Arabia

(2006-01 - 2008-12)

• Centralized deployment of job order systems across multiple departments, improving workflow efficiency and system coordination
• Supported enterprise database systems enabling accurate reporting and operational integration
• Administer Windows Server 2003 and SQL Server 2000
• Manage Active Directory, DNS, DHCP, and Group Policy
• Configure database applications (ODBC, Oracle, Crystal Reports)
• Support MAXIMO and Facilities Information Systems
• Maintain network and desktop systems

BS - Computer Engineering - Columban College (2000-01 - 2005-12)

Diploma - Computer Hardware Technology - Microcity Computer College (1996-01 - 1998-12)