Hello! I’m Dinuka Wanniarachchi, a Senior DevOps Engineer with 4+ years of experience building and scaling cloud-native platforms on AWS and GCP. I specialize in Kubernetes, CI/CD, and GitOps, and I enjoy designing reliable, automated infrastructure that helps teams ship faster with confidence.
I thrive in fast-paced, collaborative environments where I can take ownership, improve systems through automation, and mentor engineers. I’m passionate about secure, observable, and scalable platforms, and I focus on creating great developer experiences by removing friction and building tools that just work.
AWS
GCP
ArgoCD
Terraform
Helm
Linux
Bash Scripting
Python Scripting
Node.js
ELK
Grafana
Prometheus
Git
GitHub
Docker
Kubernetes
Harbor
Jenkins
Concourse CI
Nginx
May 2024 - Present
Supported and enhanced internal developer platforms by improving CI/CD performance, automating Kubernetes and OS upgrades, and implementing scalable, secure infrastructure solutions. Built Helm charts and automated secret management for efficient deployments. Contributed to high-availability platform architecture, authored operational documentation, and led a 5-member support team to ensure reliable platform operations and strong cross-team collaboration.
Nov 2022 - May 2024
Managed and optimized Kubernetes-based production environments across AWS and GCP for high availability, scalability, and cost efficiency. Implemented monitoring with Prometheus, Grafana, and Kibana, and applied Nginx rate limiting for traffic control. Enhanced CI/CD pipelines with security and quality checks using SonarQube and WhiteSource, resolved deployment issues, and automated vulnerability fixes and operational tasks with Bash.
Jan 2022 - Nov 2022
Led AWS infrastructure management with automation, security, and scalability best practices. Built and maintained CI/CD pipelines using ArgoCD, Jenkins, and GitLab to streamline deployments. Implemented monitoring with Prometheus, Grafana, and Site24x7 to enhance reliability. Automated routine tasks with Bash/Python, managed GitHub/GitLab workflows for efficient collaboration, and mentored team members to strengthen DevOps capabilities.
Feb 2021 - Jan 2022
Configured and maintained Prognosis tool for monitoring AV devices in the assigned project. Efficiently managed incoming cases within SLA targets.
July 2020 - Dec 2020
Installed, configured, and maintained operating systems and applications to ensure secure, stable environments. Managed multi-cloud infrastructure across AWS and GCP for optimal performance and cost efficiency. Ensured high availability and reliability through proactive monitoring, redundancy planning, and effective incident response.
CNCF [Cloud Native Computing Foundation]
Successfully Completed - View Certification
2025 - Present
University of Moratuwa, Sri Lanka
2016 - 2020
Sri Lanka Institute of Information Technology (SLIIT)