Lahiru Sandaruwan Liyanage

DevOps Engineer

DevOps Engineer focused on reliable CI/CD, Infrastructure as Code (Terraform, Ansible ,Kubernetes), containerization (Docker/Swarm), and AWS. I build observable, secure platforms that ship with zero‑downtime and improve developer velocity.

Core Skills

Experience

Web Lankan

DevOps Engineer • Nugegoda
Oct 2024 – Present
Tech: Jenkins, GitHub/GitLab CI, Docker, Docker Swarm, AWS (EC2, S3, CloudFront, Route 53, IAM), Nginx, Bash/Python, Grafana, UptimeRobot Kubernetes,
  • Delivered end-to-end IT support to customers through 3 channels (email, phone, AnyDesk remote), covering server configuration, security setup, and troubleshooting; provided on-site assistance when required to ensure smooth operations and high user satisfaction.
  • Worked with Atlassian Jira for issue tracking, and team collaboration; improved visibility and delivery speed.
  • Hosted software projects on Linux and Windows servers, ensuring reliable deployment and maintenance.
  • Automated day-to-day tasks with n8n AI agents and workflows
  • Managed high-volume live and staging deployments across 5 stacks (WordPress, PHP, React, Node.js, Laravel), ensuring smooth rollouts, minimal downtime .
  • Implemented end-to-end CI/CD with Jenkins and GitHub, adding quality gates and approvals to enable reliable, releases.
  • Optimized Docker for reproducible environments across 3 environments (dev/staging/prod) and orchestrated services with Docker Swarm (scheduling, health checks, service discovery).
  • Managed AWS workloads across 5 core services (EC2, S3, CloudFront, Route 53, IAM); tuned networking (VPC, security groups) for performance and cost efficiency.
  • Set up monitoring with Grafana and UptimeRobot to track system health; reduced downtime by quickly finding and fixing issues with alerts.
  • Set up and managed Kubernetes for container orchestration, testing its usability and benefits for company adoption.
  • Deployed high traffic Sri Lankan websites, such as www.sriyani.lk, www.sarasavi.lk, www.trims.waterboard.lk, and www.lankahospitals.com. with maintaining 99.9% uptime and optimal performance under high traffic loads.

3CS

Associate DevOps Engineer • Colombo
Jun 2024 – Oct 2024
Tech: Docker, Docker Compose/Swarm, DigitalOcean, GitHub Actions, Nginx/Apache, MySQL, Bash/Python
  • Managed WordPress and PHP websites, making sure they worked well, stayed updated, and fixed any problems in Linux and Windows servers.
  • Worked with DigitalOcean servers and CI/CD pipelines to host applications better, make them faster, and save money on hosting costs.
  • Set up containerized environments with Docker and Docker Compose; when needed to keep services running smoothly and handle more users.
  • Did software migrations of websites between live customer servers, testing servers, and production servers with no downtime during updates using GitHub Actions for smooth transitions.
  • Automated regular tasks using Bash and Python scripts to save time and reduce mistakes.

3CS

Trainee DevOps Engineer • Colombo
Dec 2023 – Jun 2024
Tech: GitHub Actions, Git, Linux, Backup/Restore Automation, Nginx/Apache
  • Introduced and applied automated deployment systems with GitHub Actions, making it faster and easier to release new code.
  • Set up automatic backup systems with connecting S3 buckets to keep website data safe and restore it quickly if something went wrong.
  • Managed Linux servers setup with Grafana and Prometheus to monitor production servers.

DSG Minecraft Server

System Engineer & Owner • Remote
Feb 2020 – Jan 2022
Tech: Terraform, Ansible, Docker, Prometheus, Grafana, AWS/Azure/GCP
  • Ran a popular Minecraft server called DSG Minecraft in Sri Lanka with 100+ players online at the same time, keeping it running smoothly with very little downtime.
  • Planned and implemented server infrastructure using Terraform and Ansible for automated provisioning and configuration management.
  • Worked with VPS hosting platforms like OVH, AWS, Google Cloud, and Azure to deploy and manage server instances.
  • Containerized server applications using Docker to ensure consistent environments and simplify deployments.
  • Gained experience with customized server configurations, plugins, and mods to enhance gameplay and user experience with problem-solving skills.
  • Managed a remote team of 5 people to ensure smooth operations and quick issue resolution.
  • Conducted 3-month server maintenance breaks regularly and proper environment backups to maintain stability.
  • Set up monitoring with 2 tools (Prometheus, Grafana) to watch server health and get alerts when problems happened, so we could fix things quickly.
  • Implemented scaling options to handle increased player loads and ensure optimal performance.
  • Implemented security measures to protect the server and player data from DDoS attacks using proxy servers.

Open Source Projects

Certifications

Education Background

Declaration

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References