SSSamadhi Sandanayaka
@samadhisandanayaka
L2 Systems Engineer specializing in networking, cloud infrastructure, automation, and cybersecurity.
Sri LankaWhat I'm looking for
I am an L2 Systems Engineer with hands-on experience deploying and maintaining hospitality network solutions, cloud infrastructure, and virtualized environments. I focus on reliability, automation, and security to deliver robust IT services.
At ANTlabs I perform advanced Layer 2/Layer 3 troubleshooting, manage AWS deployments, administer VMware environments, and automate tasks with Bash to improve operational efficiency. I regularly use Wireshark for packet analysis and resolve complex escalations.
Previously I supported US-based operations, managed backup and DR solutions, administered Office 365, and improved security posture using tools like Blumira and Nessus. I have experience across Fortinet, Palo Alto, SonicWall, Ruckus, Aruba, Cisco, and QNAP systems.
I teach networking, virtualization, and Linux system administration, mentor junior engineers, and contribute to ISO 27001 compliance efforts. I hold certifications in cybersecurity, Red Hat, Azure, Cisco CCNA, and backup/security specializations.
Experience
Work history, roles, and key accomplishments
L2 Systems Engineer
Antlabs Pte. Ltd.
Mar 2025 - Present (9 months)
Deploy and maintain ANTlabs hospitality network solutions across virtualized, cloud, and physical platforms; perform advanced Layer 2/Layer 3 troubleshooting and optimize AWS-based deployments to improve scalability and reliability.
Visiting Lecturer
Imperial College
Feb 2023 - Present (2 years 10 months)
Delivered lectures and practical labs on networking, virtualization and Linux system administration, developed course materials and mentored students on enterprise IT concepts and hands-on projects.
System Administrator
Calcey Technologies
Jun 2024 - Mar 2025 (9 months)
Managed on-prem and cloud IT infrastructure, administered Google Workspace, Microsoft 365, AWS and Azure, and contributed to ISO 27001 controls to ensure 24x7 operational continuity and compliance.
System Administrator
Omobio Pvt. Ltd.
Feb 2022 - Jun 2024 (2 years 4 months)
Led migration from Zimbra to Microsoft Exchange (O365), managed KVM/Ovirt virtualization and network upgrades to HP Aruba, and supported ISO 27001 initiatives to strengthen security and operations.
Level 2 NOC Support
National Institute of Business Management
Mar 2020 - Dec 2021 (1 year 9 months)
Maintained core network and systems, administered Office 365 and Ruckus access points, managed backups and WSUS patching, and implemented remote access and deployment solutions to improve uptime and manageability.
Education
Degrees, certifications, and relevant coursework
CUCoventry University
Bachelor of Science (Hons), Ethical Hacking and Network Security
2021 - 2023
Grade: First Class – 75.5%
Completed a BSc (Hons) in Ethical Hacking and Network Security with First Class honours (75.5%).
National Institute of Business Management
Higher National Diploma, Network Engineering
2020 - 2021
Grade: GPA 3.6
Completed a Higher National Diploma in Network Engineering with a GPA of 3.6.
National Institute of Business Management
Diploma, Computer Networks
2019 - 2020
Grade: GPA 4.0
Completed a Diploma in Computer Networks with a GPA of 4.0.
Tech stack
Software and tools used professionally
Availability
Location
Sri LankaAuthorized to work in
Job categories
Skills
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