R.D. Tharaka Madushan Ranathunga

Senior System Administrator & Network Security Specialist
80/1/c Nirmawela Rd, Mulleriywa North Angoda., 10620, Colombo, LK.

About

Highly accomplished and goal-oriented Senior System Administrator with over 8 years of progressive experience in system administration, network security, and IT operations. Proven expertise in managing complex IT infrastructures, implementing robust security protocols, and optimizing system performance. Possessing extensive certifications in leading cloud platforms (OCI, Azure, AWS) and cybersecurity, I am adept at leveraging cutting-edge technology to drive organizational efficiency and safeguard critical assets, seeking to contribute to an innovative IT environment.

Work

SIYAPATHA FINANCE PLC
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Senior Executive, System Administration

Colombo, Western Province, Sri Lanka

Summary

Led comprehensive system administration functions, encompassing operating system management, network security, technical support, and disaster recovery planning to ensure robust IT infrastructure.

Highlights

Managed the full lifecycle of operating systems and software, ensuring optimal performance and stability for critical business operations.

Configured and maintained network equipment and implemented robust security measures, enhancing network integrity and data protection against evolving threats.

Delivered expert technical support, resolving complex end-user issues promptly to minimize downtime and maintain high levels of productivity.

Developed and enforced security protocols, safeguarding critical IT systems and sensitive data against cyber threats and ensuring confidentiality.

Orchestrated regular data backups and formulated comprehensive disaster recovery plans, ensuring business continuity and data resilience during unforeseen events.

Proactively monitored system performance and troubleshooted issues, optimizing operational efficiency and preventing outages across the IT landscape.

LB FINANCE PLC
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Executive, Networking & IT Operations

Colombo, Western Province, Sri Lanka

Summary

Oversaw network and IT operations, providing critical technical support, system maintenance, and hardware/software troubleshooting to ensure seamless business functionality.

Highlights

Maintained high availability of computer systems, optimizing performance to maximize user productivity and operational efficiency.

Installed and configured diverse computer hardware, operating systems, and applications, ensuring seamless integration and functionality for over 100 users.

Provided multi-channel technical support (in-person, phone, remote desktop), resolving system and network issues for staff and clients, improving system uptime by 15%.

Diagnosed and resolved complex hardware and software faults across systems and networks, reducing mean time to resolution by 20%.

Managed user accounts and profiles, including password resets, ensuring secure and efficient access for all personnel.

Responded to IT service requests within defined SLAs, maintaining high levels of user satisfaction and minimizing operational disruptions.

METROPOLITAN OFFICE (PVT.) LTD
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Technical Officer - All in One Support (AIOS)

Colombo, Western Province, Sri Lanka

Summary

Provided comprehensive technical support for a wide range of Canon products, Acer laptops, and Micromax mobile phones, and managed critical printing operations for governmental documents.

Highlights

Completed specialized training on Canon DreamLabo 5000 Series at CANON SINGAPORE PTE., enhancing expertise in advanced printing technology and support.

Managed all technical and network-related issues for a wide range of Canon products, including copiers, faxes, printers, and production machinery, ensuring continuous operation and minimal downtime.

Provided comprehensive technical support for Acer Laptops and Micromax Mobile Phones, resolving hardware and software issues for end-users.

Served as a technical officer for printing the annual budget statement for the Parliament of Sri Lanka, ensuring timely and accurate delivery of critical documents.

Contributed as a technical officer to the printing of high-stakes academic materials (O/Ls, A/Ls, semester papers) using the Oce ColorStream 3900 printer for the examination department.

Education

Wrexham Glyndŵr University
Wrexham, Wales, UK

BSc (Hons) Degree

Computing

Grade: Second-class lower division

Courses

21st-Century Computing

Network Management

IT Project Management

Distributed Data

Final Project

Sri Rahula Maha Vidyalaya. Angoda
Angoda, Western Province, Sri Lanka

G.C.E Advanced Level Examination

General Studies

Grade: Z score .7139

Courses

Political Science

Buddhist Civilization

General English

Sinhala

Londontec City Campus
Colombo, Western Province, Sri Lanka

LID Diploma (2 Years)

Computer System Engineering

Courses

Techniques and Concepts of Programming

Networking Technologies

Professional Development

Database Management

Managing of Security

IT Project Management

Intelligent Systems

Algorithms in Programming

Cloud Computing

Security in Networks

System Development with SDLC

Basics in Computing

Computing Mathematics

Advanced Concepts in Programming

Practical Computing Project

Vocational Training Center (Dehiwala)
Dehiwala, Western Province, Sri Lanka

Diploma

Network Administration

Courses

Introduction to Network Devices

Network Troubleshooting

Common Network Issues

Common Network Security Issues

Common WAN Components and Issues

The OSI Networking Reference Model

The Transport Layer Plus ICMP

Basic Network Concepts

Network Cabling

Introduction to Wireless Network Standards

Introduction to Wired Network Standards

Server Administration

Esoft Metro Campus (Colombo 04)
Colombo, Western Province, Sri Lanka

Diploma

Hardware Engineering

Courses

Identification & Installation of Computer Parts & Peripherals

Assembling PCs and System Configuration (Core i3, i5, i7, i9)

Installation & Troubleshooting of Client Operating Systems - Microsoft Windows 10

Software Installation & Troubleshooting

Chip Level Repairing of Components (Motherboard)

Software Installation and Upgrading

Troubleshooting

Repairing and Servicing of Laptops

Structured Cabling (Network Cabling)

ESOFT Metro Campus (Battaramulla)
Battaramulla, Western Province, Sri Lanka

Diploma

English

Courses

English in Real Life Situations (Telephone Etiquette, Railway Station, Hotel Booking)

Sentence Patterns

Role-Plays

Group Discussions

Listening & Speaking

Language Games

Debates

Swiss Lanka Hotel School
Colombo, Western Province, Sri Lanka

Certificate

Hotel Operations

Courses

Introduction to Hotel Operations

Food & Beverage

International Cookery and Culinary Arts

Front Office Operations and Services

Accommodation Operations and Services

Computer Technology

Ediriweera Sarachchandra Vidyalaya. Himbutana
Himbutana, Western Province, Sri Lanka

G.C.E Ordinary Level Examination

General Studies

Courses

Sinhala

English

Mathematics

Science

History

Civilization

Religion

IT

Art

Languages

Sinhala
English

Certificates

OCI Certified Generative AI Professional

Issued By

Oracle Cloud Infrastructure (OCI)

Chronicle Certified SOAR Analyst (CCSA)

Issued By

Chronicle Security

Chronicle SOAR Fundamentals V6 (CSFv6)

Issued By

Chronicle Security

Google Chronicle Fundamentals (SIEM)

Issued By

Google

EC-Council Network Defense Essentials (NDE)

Issued By

EC-Council

EC-Council Ethical Hacking Essentials (EHE)

Issued By

EC-Council

arcX Cyber Threat Intelligence

Issued By

arcX

OCI Certified Multicloud Architect Associate

Issued By

Oracle Cloud Infrastructure (OCI)

Oracle Apex Cloud Developer Professional

Issued By

Oracle

Azure Security Fundamentals (SC-900)

Issued By

Microsoft

Azure AI Fundamentals (AI-900)

Issued By

Microsoft

Azure Data Fundamentals (AZ-900)

Issued By

Microsoft

Microsoft Certified Solutions Associate (MCSA)

Issued By

Microsoft

Microsoft Certified: Azure Fundamentals (AZ-900)

Issued By

Microsoft

Microsoft Certified Solutions Expert: Core Infrastructure (MCSE)

Issued By

Microsoft

ICSI | CNSS Certified Network Security Specialist

Issued By

ICSI

AWS Security Fundamentals

Issued By

Amazon Web Services (AWS)

NSE | Network Security Associate

Issued By

Fortinet

Aviatrix Certified Engineer - Multi-Cloud Network Associate

Issued By

Aviatrix

Microsoft Certified: Azure Administrator Associate (AZ-104)

Issued By

Microsoft

OCI Certified Operations Associate

Issued By

Oracle Cloud Infrastructure (OCI)

OCI Certified Architect Professional

Issued By

Oracle Cloud Infrastructure (OCI)

OCI Certified Architect Associate

Issued By

Oracle Cloud Infrastructure (OCI)

OCI Foundation Associate

Issued By

Oracle Cloud Infrastructure (OCI)

Oracle Cloud Platform Identity and Security Management Specialist

Issued By

Oracle Cloud Infrastructure (OCI)

Volunteer

Young Entrepreneurs Club (Lontontec City Campus)
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Member

Colombo, Western Province, Sri Lanka

Summary

Engaged with the Young Entrepreneurs Club, fostering entrepreneurial skills and participating in business-oriented initiatives.

Highlights

Contributed to entrepreneurial projects and discussions, developing business acumen.

Networked with peers and mentors, expanding knowledge in startup and business development.

Automobile Club (AAC)
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Committee Member

Colombo, Western Province, Sri Lanka

Summary

Actively contributed to the Automobile Club, participating in and organizing various automotive-related events and initiatives.

Highlights

Participated in the planning and execution of club events and activities.

Supported community engagement and skill-sharing among members.

Vocational Training Center – Dehiwala
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Organizing Committee Member

Dehiwala, Western Province, Sri Lanka

Summary

Contributed to the successful organization of the 'in Medica 2019' Health Exhibition, managing logistics and event coordination.

Highlights

Coordinated logistics and activities for the 'in Medica 2019' Health Exhibition, contributing to community health awareness.

Collaborated with team members to ensure smooth execution of event initiatives and stakeholder engagement.

Vocational Training Center
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Organizing Committee Member

Moratuwa, Western Province, Sri Lanka

Summary

Participated in the organizing committee for the 'Serving Hearts' project, focusing on the renovation of De Soysa District Hospital.

Highlights

Assisted in planning and executing the 'Serving Hearts' project to renovate De Soysa District Hospital, improving patient facilities.

Managed resources and coordinated volunteer efforts to achieve project objectives.

Edireweera Sarachchandra Vidyalaya - Himbutana
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Treasurer & Drama Coordinator

Himbutana, Western Province, Sri Lanka

Summary

Held leadership roles within the Sinhala Literary & Debating Society, managing finances and coordinating drama activities.

Highlights

Served as Treasurer in 2010, managing society funds and financial records.

Coordinated drama productions in 2009, overseeing rehearsals and performances.

Acted as Committee Member from 2008, contributing to overall society activities and events.

Skills

System Administration

Operating System Management, Software Installation & Configuration, System Monitoring, Troubleshooting, Performance Optimization, IT Documentation, Compliance Management, Server Administration.

Network Management

Network Equipment Configuration, Network Security, Network Troubleshooting, Network Cabling, WAN/LAN Management, OSI Model, Wireless Network Standards, Network Devices.

Cybersecurity

Security Protocols, Disaster Recovery Planning, Data Backup Management, SIEM (Security Information and Event Management), SOAR (Security Orchestration, Automation, and Response), Cyber Threat Intelligence, Network Defense, Ethical Hacking Essentials, Network Security Specialist.

Cloud Computing

Oracle Cloud Infrastructure (OCI), Microsoft Azure, Amazon Web Services (AWS), Multi-Cloud Network Architecture, Cloud Security, Cloud AI, Cloud Data Management, Cloud Platform Identity & Security Management.

Technical Support

End-User Support, Hardware/Software Fault Diagnosis, Remote Desktop Support, Application Roll-out, User Account Management, SLA Adherence, Problem Resolution.

Hardware & Infrastructure

Computer Hardware Installation, Component Repair (Motherboard, Laptops), Structured Cabling, Electrical Safety Checks, PC Assembly & Configuration, Client Operating Systems (Windows 10).

Printing Technology

Canon DreamLabo 5000 Series, Oce ColorStream 3900, Copier/Fax/Printer Support, Production Machine Management.

Project Management

IT Project Management, SDLC (System Development Life Cycle), Team Collaboration, Stakeholder Management.

Interests

Automotive

Automobile Club.

Entrepreneurship

Young Entrepreneurs Club.

Cricket

U-12 Cricket, U-14 Cricket, Team Sports.

Literary & Debating

Sinhala Literary Society, Debating, Drama Coordination.

References

Mr. Gayan Abeygunawardhana

Senior Consultant and CEO at NextGen Campus, Tel: 0777225180

Mr. Ishara Dilhan Batuwita

National Manager - Security and Governance at LB Finance, Colombo 03, Tel: 0779631519

Mr. Chamara Nandika Perera

Consultant Trainer and Senior Lecturer at VTC Dehiwala, Tel: 0777911113