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oshangalwaduge/README.md

👋 Hi, I'm Oshan Galwaduge

Associate Lead DevOps Engineer and a Kubestronaut with 5+ years of experience designing, building, and operating cloud-native and hybrid infrastructure for large-scale, mission-critical enterprise systems.

I specialize in Kubernetes platforms, CI/CD as a service, infrastructure automation, and Site Reliability Engineering (SRE) practices to improve availability, performance, and deployment reliability.


🔧 What I Work On

  • Designing and operating Kubernetes-based platforms in cloud and hybrid environments
  • Building CI/CD platforms used by multiple engineering teams
  • Infrastructure as Code for secure, repeatable, production-ready environments
  • Improving reliability through observability, automation, and SRE practices
  • Modernizing legacy platforms into containerized microservices

🛠 Tech Stack

☁️ Cloud & Infrastructure

  • AWS (EKS, EC2, RDS, VPC, IAM, Outposts)
  • Azure, GCP, OCI
  • Terraform, Ansible, Packer, CloudFormation

📦 Containers & Kubernetes

  • Docker, Kubernetes
  • EKS, GKE, OpenShift
  • Helm, Kustomize
  • Cilium CNI (CNCF project), Istio

🌐 CNCF & Observability

  • Kubernetes
  • Cilium
  • Prometheus, Grafana
  • Fluent Bit / Fluentd
  • ELK Stack, Datadog

🔄 CI/CD & DevOps Tooling

  • GitLab CI, Jenkins, Atlassian Bamboo
  • Argo CD
  • Nexus, JFrog Artifactory
  • GitHub, GitLab, Bitbucket

🧠 Scripting & Automation

  • Python, Bash
  • YAML, JSON

🚀 Current Focus

  • Kubernetes security, policy enforcement, and supply-chain security
  • Cloud-native networking and observability
  • Platform reliability, resilience testing, and SRE best practices

🎓 Certifications

  • Kubernetes and Cloud Native Associate (KCNA)
  • Kubernetes and Cloud Native Security Associate (KCSA)
  • Certified Kubernetes Application Developer (CKAD)
  • Certified Kubernetes Administrator (CKA)
  • Certified Kubernetes Security Specialist (CKS)
  • AWS Solutions Architect – Associate (AWS-SAA C03)

📌 Selected Experience

  • Hybrid cloud and on-prem Kubernetes platforms using AWS Outposts
  • Multi-cluster EKS deployments for low-latency, data-intensive workloads
  • CI/CD platforms supporting enterprise-scale development teams
  • Observability and monitoring for high-throughput analytics systems

📫 Connect

Pinned Loading

  1. USocialNetwork USocialNetwork Public

    A Voice Command Based Social Network Application for Blind and Visually Impaired People

    JavaScript 1 2

  2. cilium cilium Public

    Forked from cilium/cilium

    eBPF-based Networking, Security, and Observability

    Go

  3. covid-19-dashboard covid-19-dashboard Public

    A dashboard that gives live statistics of COVID-19 situation in Global and Sri Lanka.

    HTML

  4. Linux-Training Linux-Training Public

    Linux-Training

    Shell

  5. cilium/cilium cilium/cilium Public

    eBPF-based Networking, Security, and Observability

    Go 24.7k 3.9k