Architecting High-Availability Enterprise Networks & Zero-Trust Defense.
Senior Network & Security Engineer with deep expertise across Fortinet perimeter firewalls, Cisco CCNP enterprise routing, Huawei Datacenter ECC800 pods, SD-WAN interconnects, and multi-cloud resilience.
Engineering Reliable, Resilient & Secure Digital Infrastructures
Currently serving as IT Support Coordinator at Marriott Executive Apartments Doha, Le Mirage City Walk in Qatar. I bring hands-on mastery in converting high-profile properties into international Marriott brand standards, running critical hospitality systems (Oracle Opera PMS, VICAS, Micros, VingCard/Saflok), and maintaining high-availability datacenter infrastructure (Huawei ECC800, Fortinet 900D clusters).
Previously delivered nationwide SD-WAN and enterprise firewall transformations across financial and insurance corporations in Sri Lanka, backed by a First Class Honors BEng in Computer Networking and recognition as a Gold Medalist from London Metropolitan University.
Cisco NetAcad Instructor
TRIDI NET ACADEMY CA 400052058 (11/2023 – 12/2024)
Active instructor mentoring network engineers in Cisco CCNP routing, switching architectures, and CyberOps.
MBCS British Computer Society
Member ID: 995123787 (02/2023 – 02/2024)
Professional member adhering to strict codes of engineering conduct, zero trust ethics, and continuous professional development.
Languages & Communication
Interests & Pursuits
Technical web article writing, chaos engineering drills, continuous cloud labs, and international travel.
Professional Work Experience
Chronological history across luxury hospitality, corporate finance, insurance, and academic laboratories.
Information Technology Coordinator & Network Engineer
Marriott Executive Apartments Doha, Le Mirage City Walk | Marriott Bonvoy
- Technical Support: Provide technical support to users for hardware and software issues, including computer systems, mobile devices, and other IT equipment. Monitor network performance and troubleshoot network problems.
- IT Infrastructure Management: Manage company IT infrastructure including Aruba controllers, Fortinet 900D firewalls, Cisco/Aruba switches, Huawei Datacenter ECC800, Hotel Opera System, VICAS, IPTV, IP Phone (Alcatel), Micros, SUN Backoffice, VingCard & Saflok keys, and Mobile Key Card System.
- Guest IT Support: Respond to guest IT support requests and ensure the smooth functioning of guest technology.
- Server Management: Manage Opera servers and Windows servers to ensure optimal performance.
- IT Policies and Procedures: Assist with the development and implementation of IT policies and procedures, ensuring security and compliance with relevant regulations.
Cisco Certified Academy Instructor
Tridi Net Academy (CA 400052058)
Teaching official Cisco courses as a Cisco Network Academy instructor. Mentoring students in CCNP Enterprise Advanced Routing, OSPF/BGP protocols, and CyberOps security incident handling.
Network Engineer
- Operating master consoles to monitor the performance of networks and computer systems.
- Design, implement, and maintain the company's network infrastructure, including LAN, WAN, and wireless networks.
- Updating network equipment to latest firmware releases and reporting network status to stakeholders.
- Installing, configuring, and supporting network equipment including routers, proxy servers, switches, WAN accelerators, DNS and DHCP.
- Manage and configure network disaster recovery planning and testing to ensure rapid restoration.
- Support and administer firewall environments in line with IT security policy.
System Engineer
- Manage and monitor all installed systems and infrastructure (VMware ESXi, Hyper-V).
- Install, configure, test and maintain operating systems, application software and system management tools.
- Proactively ensure highest levels of systems and infrastructure availability.
- Maintain security, backup, and redundancy strategies (Veeam & Nakivo).
- Write and maintain custom scripts (Python, PowerShell) to increase system efficiency and reduce human intervention time.
Network Administrator
- Establishes and maintains network performance.
- Establishes networking environment by designing system configuration and directing system installation.
- Secures network system by establishing and enforcing policies and defining monitoring access.
- Updates data servers and network equipment; configures and audits network devices.
Network Administrator & Lab Instructor
- Manage ESOFT Kandy Branch Network infrastructure.
- Support students for undergraduate networking subjects and packet tracer laboratories.
- Assistance with the demonstration of experiments and software to undergraduate students.
Associate — Subscriber Registration Operations
- Coordinate system development tasks to include design, integration and formal testing.
- Oversees all transitions into production and system specifications.
- Create and maintain programmatic and technical documentation to ensure efficient planning and execution.
Computer Hardware Technician & Trainee Network Engineer
- Component-level motherboard diagnosis, assembly, and preventive maintenance.
- Install, configure, test and maintain operating systems and system management tools.
- Perform cabling, connecting and configuring of peer-to-peer enterprise networks.
Featured Technical Projects
High-impact infrastructure rollouts delivered across hospitality, finance, and datacenters.
Marriott Property Conversion at Le Mirage City Walk
Complete infrastructure uplift converting property network, security perimeter, and guest technology to Marriott Global Standards. Enforced zero-trust network segmentation between guest VLANs, administrative financial systems, and IoT locks.
Huawei ECC800 Datacenter Migration
Spearheaded end-to-end datacenter consolidation and migration into modular Huawei ECC800 pods. Maintained zero downtime across active guest reservations and billing systems with high-density optical patch reorganizations.
Central Finance SD-WAN Nationwide Rollout
Implemented Fortinet Secure SD-WAN across distributed branch offices linking to Colombo headquarters. Integrated primary and secondary Sri Lanka Telecom fiber connections with automated sub-second failover.
Alcatel PBX and VoIP Infrastructure Deployment
Complete setup and configuration of Alcatel PBX servers, SIP trunking, and IP phones across guest apartments and back-office administrative departments for crystal clear high-density communication.
Technical Skills & Technologies
Comprehensive overview of technologies mastered in live enterprise environments.
Firewalls & Security
- Fortinet FortiGate (900D)
- Palo Alto Networks
- WatchGuard Firewalls
- Zero Trust Architecture
Enterprise Networking
- Cisco R&S (CCNP / CCNA)
- Huawei R&S & ECC800 Pods
- Aruba R&S & Wireless AirWave
- BGP, OSPF, VLANs, SD-WAN
Cloud & Virtualization
- Oracle Cloud Infrastructure (OCI)
- Microsoft Azure & AWS
- VMware ESXi & Hyper-V
- Veeam & Nakivo Replicators
Systems & Hospitality
- Oracle Opera PMS
- Micros POS & Sun Backoffice
- VingCard / Saflok / Mobile Key
- Alcatel PBX & SIP Trunking
Licenses, Certifications & Badges
Scroll inside container to explore all 60+ verified credentials.
Education & Gold Medal Honors
International degree credentials and consecutive best-performance awards.
Bachelor of Engineering (Hons) in Computer Networking
London Metropolitan University UK
Graduated with First Class Honours. Awarded the prestigious Gold Medal for Best Performance at the 2021 Awarding Ceremony.
Higher National Diploma in Computer Networking (Level 5 RQF)
Pearson Education (Edexcel) UK • ESOFT Metro Campus
Graduated with Distinction. Conferred the Silver Medal for Best Performance at the Diploma Awarding Ceremony 2017.
Available for Strategic Network & Infrastructure Roles
Whether you need guidance on a complex multi-site SD-WAN migration, hardening perimeter firewalls against advanced threats, or leading hotel technology transitions, feel free to reach out.