Available · Colombo, Sri Lanka

Thejan
Vithanage

DevOps & Cloud Engineer. Building reliable infrastructure, automating everything, and keeping systems running. Hands-on with Kubernetes, AWS, Azure, and Linux.

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About

About

Thejan Vithanage is a Sri Lankan DevOps and Cloud Engineer specialising in infrastructure management, platform reliability, and automation.

He currently works as Assistant IT Manager at Ashadi Jewellers, leading end-to-end IT infrastructure across retail and production branches. Previously, he was a Cloud IOMC Analyst at HCLTech, ensuring operational stability for Unilever's critical systems.

He holds industry certifications in Kubernetes, Red Hat, AWS, and Azure, and is a BEng Software Engineering graduate of the University of Westminster.

3+
Years of experience
150+
Incidents managed monthly
K8s
Kubernetes & containers
LK
Colombo, Sri Lanka
Career

Experience

Assistant IT Manager
Ashadi Jewellers · Colombo, Sri Lanka

Leading end-to-end IT infrastructure and systems management across retail and production branches. Modernised HR systems from MS Access to a production web application on hardened Linux infrastructure. Planning, deploying and maintaining networks, Windows-based file servers and storage platforms. Optimising IT costs through automation and hybrid cloud solutions.

Linux Nginx Server Hardening AWS S3 Networking Automation Hybrid Cloud
Cloud IOMC Analyst
HCLTech · Colombo, Sri Lanka

Ensured operational stability of critical systems for Unilever as part of the Platform Reliability Engineering team. Managed 150+ incidents and 50+ service requests monthly via ServiceNow. Resolved issues related to backups, Wintel CPU utilisation and Unix resource performance. Worked with Tivoli Workload Scheduler (TWS) for job submission, monitoring and re-execution.

ServiceNow Incident Management Wintel Unix Backup Tools TWS Platform Reliability
Associate Software Engineer
HCLTech · Colombo, Sri Lanka

Completed Advanced .NET Core training with hands-on experience in C#, ASP.NET Core and Entity Framework. Developed a capstone project following best practices in API development and database design. Worked with Azure services for hosting, authentication and storage.

.NET Core C# ASP.NET Core EF Core SQL Azure
Technical expertise

Skills & tools

☁️
Cloud Platforms
AWS Azure Hybrid Cloud
⎈
Containers & Orchestration
Kubernetes Docker Helm
🖥️
Systems
Linux Windows Server RHEL
⚙️
Automation & IaC
Shell Scripting Ansible Terraform
📡
Monitoring & Observability
Prometheus Grafana Uptime Kuma
🔁
ITSM
ServiceNow TWS Incident Mgmt
💻
Development
C# .NET Core SQL Python
Additional credentials

Certifications

⎈
Certified Kubernetes Administrator
CKA · CNCF
🎩
Red Hat Certified System Administrator
RHCSA · Red Hat
☁️
AWS Solutions Architect – Associate
SAA-C03 · Amazon Web Services
🔷
Azure Solutions Architect Expert
AZ-305 · Microsoft
🔷
Azure Administrator Associate
AZ-104 · Microsoft
Work

Projects

HR Infrastructure Modernisation — Ashadi Jewellers

Replaced a legacy MS Access HR system with a production PHP web application on a hardened Linux VPS. Implemented defence-in-depth security, automated weekly backups to AWS S3, chrooted SFTP developer access, and TLS 1.2/1.3 with Nginx security headers.

Linux Nginx UFW fail2ban AWS S3 MySQL
Batch Job Monitor & Auto Recovery System

Linux-based batch job monitoring system using Shell scripting. Polls job status every 60 seconds, detects failures by exit code analysis, and auto-retries up to 3 times with pre-retry cleanup. Logs all runs and failure rates to a SQLite incident database.

Linux Shell SQLite Automation
SusFaceGen

Web application using Generative AI to create realistic facial images from eyewitness descriptions. Built backend with ASP.NET Core, deployed on Azure for scalable hosting, and leveraged AI platforms for cost-efficient image generation.

ASP.NET Core Generative AI Azure
Food Ordering E-commerce Platform

ASP.NET MVC e-commerce platform with secure payment gateway integration, product management and user authentication. Built with C# and Entity Framework, deployed on cloud hosting via Visual Studio 2022.

ASP.NET MVC C# EF Core SQL
Academic background

Education

BEng (Hons) Software Engineering
University of Westminster

Achieved 70%+ in all course units including OOP in Java. Maintained academic performance while working full-time at HCLTech.

Let's connect

Get in touch

Open to DevOps, cloud infrastructure, and SRE roles.

thejan.vithanage@outlook.com LinkedIn Medium GitHub 🌐 TeamGplus