Gayantha Srinath

I have been working as a Systems Administrator for the past five years at few Companies, where I have gained extensive experience in managing Azure Cloud resources and supporting Windows Server 2008 R2, 2012 R2 and 2016, ADDS, SMB environments. I have also gained valuable experience in managing and supporting Linux servers, including Red Hat Enterprise Linux 7 and 8, CentOS 7 and 8, Ubuntu 20.04 LTS, Debian as well. I have also gained experience in administering in PHP and Java EE based web application with Oracle 11g, MySQL 5.7 and 8.

Total years of work experience 10 +

DNA GTx Lab, Dubai, UAE.

Designation: - Lead System Administrator – [ October 2022 – March 2025 ]

Duties, Responsibilities and Tech Stack:

Microsoft 365 | Office 365 | Multi Cloud | Azure | Terraform | Ansible | Docker | Kubernetes | Red Hat & Linux | Windows | Nginx | Apache | MySQL | MongoDB | GitOps | Python | Bash scripting | PowerShell

- Design, deploy, and manage hybrid IT infrastructure (cloud + on-prem HPC clusters) to support NGS/genomic pipelines and data analysis.

- Oversee Microsoft 365 and Office 365 operations, including identity management, collaboration tools, and security controls.

- Collaborate with bioinformatic and software engineering teams to optimize computational workflows, CI/CD pipelines, and containerized environments (Docker, Kubernetes).

- Administer and expand storage systems (NAS, RAID, NFS, iSCSI), databases, and backup solutions to support large-scale genomic datasets.

- Monitor systems performance, maintain disaster recovery strategies, and implement proactive infrastructure monitoring.

- Ensure compliance with data security, privacy, and regulatory frameworks by developing and maintaining SOPs, IT security policies, and documentation supporting CAP, ISO 15189, ISO 27001, ISO 9001, and internal audits.

OpenArc Systems Management (Pvt) Ltd.

Designation: - System Administrator – [ Jan 2021 – August 2022 ]

Duties and Responsibilities.

Defining and improving processes and services with cost effective manner.
Root cause analysis of Windows / Linux server system and applications.
Linux systems troubleshooting, task automation and bash scripting.
Administration of SCM (GIT and SVN).
Monitoring network service and servers using Azure tools and Zabbix.
Maintain ADDS 2016, Group Policies.
Maintaining Servers and web application On-premise and Cloud, LB/HA configurations.
Administration of FortiGate with SSL VPN/Port Forwarding/Static: Routing/NAT configuration.
Analyze the cost, Identification of risk on infrastructure, report to management and suggest solutions.
G suite Administration.
Azure cloud infrastructure administrations VMs VPN
Renewal of Software licensing, subscription and domain and SSL.
 

Headstart Pvt Ltd (Subsidiary of Dialog Axiata) [ June 2020 - December 2020 ]
 Duties and Responsibilities.

Azure cloud infrastructure administrations VMs VPN WAF VNET STORAGE Web Services
Office 365 Administration and Azure AD administration. With IAM Roles.
Maintain security, backup, and redundancy strategies on azure resources.
Maintaining and supporting web-based PaaS/ SaaS / Docker on azure.
Troubleshoot production issues and perform root-cause analysis in Linux base web system.
Defining and improving processes and services.
Preventive maintenance, proactive monitoring to ensure the critical system availability
Linux systems administration, troubleshooting, patch update and shell scripting.
Maintaining CI/CD environments with build automation tool such as Jenkins.
Attending Level 2 3 support.
Administration of Corporate endpoint security solution.
 

Designation: - Senior Network and System Specialist. [ March 2017- June 2020 ]

Company: - OPENARC Systems Management (Pvt) Ltd.

Duties and Responsibility.

Administration of IT Virtualization environment VMWare 5.5, 6.5.
Administration of Firewalls/Network Analyzer/ Proxy/ Routers/Wireless AP, Controller/ and Network Switchers L2, L3.
Administration of Server/Client Windows NT / Linux & Application Software installation.
Administration of G Suite console.
Preventive maintenance, proactive monitoring to ensure the critical system availability
VPN Configuration and Implementations and Troubleshooting. SSL and PPTP
ADDS Maintain with GPO Configurations.
Deploy OS / Databases and applications installation and configurations.
Administration of Corporate Endpoint Security Solution.
Cloud Provisioning, web hosting and domain registrations, renewal.
Data Backup and restoring using LTO tape 5 and NAS with VEEAM backup.
Web Applications deployments on Apache Tomcat / httpd.
Preparing proposals for the IT equipment and software purchases.
Prepare necessary Documentation and Reports.
 

Creative Information Technology (Pvt) Ltd.

Designation: - Hardware and Network Technician. [June 2016 – March 2017]

Duties and Responsibility.

Workstation and Laptop Repairing.
CCTV Implementation and Troubleshooting.
OS and Application Installation and Troubleshooting.

Completed BSc (Hons) Computing.

Completed Higher National Diplomas in Computing, Pearson UK.

Completed Diploma in Computer Network Administration, NYSC in Sri Lanka.

Completed Network Technician NVQ Level 04, NYSC in Sri Lanka.