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Yasindu
Dissanayake

>

Site Reliability & DevOps Engineer with 2+ years of production experience. Specialized in automating multi-cloud pipelines, securing zero-trust platforms, and building enterprise-grade Kubernetes infrastructures.

-- Repos -- Followers 27+ PRs Merged Colombo, Sri Lanka
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guest@mryash.dev ~ bash
Welcome to Yash's SRE terminal!
Type help to view available operations.
 
➜
2+
Years Experience
15+
Production Deployments
27+
GSoC / Open Source PRs
99.9%
SLA Target Achieved
// system overview

Site Reliability Engineer

I am a DevOps and Site Reliability Engineer focused on designing, automating, and maintaining resilient cloud-native platforms. I specialize in building Kubernetes infrastructures, optimising GitOps deployment lifecycles, and scripting operations logic.

Currently at Mitra AI, I monitor client production stacks, handle incident responses under SLA, and tune K8s clusters. I am passionate about performance optimization, infrastructure safety architectures, and open source ecosystems.

Hands-on experience from bare metal clusters (k3s, MAAS) to elastic clouds (AWS).
Zero-Trust access implementation, network zoning, and secure Vault secrets management.
Optimized build speed workflows, saving up to 60% pipeline compute runtimes.
yash@mryash.dev
OS Ubuntu / Debian Linux
Platform Kubernetes (RKE2/k3s)
Toolbox Docker · Terraform · Ansible
CI/CD GitLab CI · GitHub Actions · ArgoCD
Telemetry Prometheus · Grafana · Loki
Active K8s Visualizer
cluster_status: healthy
Ingress Traefik Control Plane RKE2 Core Worker Nodes Longhorn PV Prometheus Vault Secure
Ingress Controller (Traefik)

Routing traffic into the cluster. Implements secure modern SSL/TLS endpoints, routing subdomains, cert-manager automated Let's Encrypt issuance, and rate limiting.

// professional track

Career Experience

Engineering production platform systems and automating pipelines across teams.

Mitra AI April 2026 – Present
Site Reliability Engineer (Managed Services)
  • Incidents SLA: Respond to critical infrastructure failures within SLA thresholds, executing thorough Root Cause Analysis (RCA).
  • Kubernetes Ops: Troubleshoot GitOps deployments using ArgoCD on client Kubernetes pods.
  • Fleet Telemetry: Optimize cluster observability using Prometheus, Alertmanager, Loki, and custom Grafana panels.
  • Linux Administration: Perform hardening, kernel patching, security audits, and storage allocations on target server fleets.
Kubernetes ArgoCD GitLab CI/CD AWS Prometheus Linux
HurryPay June 2025 – April 2026
Consultant - DevOps Engineer
  • Payments Dev Env: Owned complete dev environment lifecycle on hybrid infrastructures (Alibaba Cloud & On-Prem Linux).
  • ArgoCD GitOps: Built automated application pipelines on RKE Kubernetes clusters, securing audit logs.
  • Kubernetes Migration: Containerised legacy Docker/systemd architectures to improve scheduling and resources.
  • CI/CD Speedup: Optimized build-steps and caches, cutting pipeline execution durations by 50%.
  • ZTNA Security: Implemented Authentik SSO Gateway and Twingate networks to secure private payment gates.
Kubernetes (RKE) ArgoCD Alibaba Cloud Zero Trust Nginx Bash
Geodd Dec 2024 – April 2026
DevOps & Infrastructure Engineer
  • AI Bare Metal Support: Managed on-demand GPU/AI inference workloads using k3s and Helm.
  • DC Operations: Executed hardware installations, cabling configurations, and route optimizations using MTR/traceroute.
  • Server Provisioning: Deployed Proxmox VE hypervisors and automated Ubuntu server setups via Canonical MAAS.
  • Observability & Automation: Wrote Terraform scripts to automate SSL setups and built Prometheus metrics exporter pipelines.
Kubernetes (k3s) Helm Cilium CNI Proxmox VE MAAS Terraform Vault
Apache Software Foundation June – Sept 2025
Google Summer of Code Developer
  • Apache Airavata: Modernized build and release workflows by writing modular GitHub Actions.
  • Ansible Playbooks: Refactored legacy provisioners, decreasing onboarding setup configuration time by 35%.
  • Containerized Pipelines: Automated docker registry image builds and multi-arch testing suites.
GitHub Actions Ansible Docker Apache Airavata GSoC 2025
// tech bento

Skills & Technologies

My system components grouped by operational layer.

Containers & Orchestration

Core Platform Delivery

Kubernetes Docker Helm K3s / RKE2 Cilium CNI Multi-Arch Builds

CI/CD & GitOps

Automation Systems

GitLab CI GitHub Actions ArgoCD Jenkins

Infrastructure as Code

Declarative Provisioning

Terraform Ansible YAML Schema

Cloud Stacks

Multi-Cloud Platforms

AWS Alibaba Cloud VPC / IAM / EC2

Telemetry & Obs

Cluster Observability

Prometheus Grafana Loki / Alertmanager

Systems & Network Security

OS Hardening & Routing

Linux Administration HashiCorp Vault Authentik SSO Nginx Traefik Ingress ZTNA Network
// open source ecosystem

MetaCall Core Contribution

Core Infrastructure Contributor May 2024 – March 2026

MetaCall

Polyglot Runtime Engine

Contributed to the core CI/CD infrastructure of the MetaCall polyglot runtime, optimizing build pipelines, enabling multi-architecture docker pipelines, and resolving system dependencies.

27+ PRs Merged
60% CI Time Saved
3 Architectures

Build Caching Adjustments

Implemented smart build workflows and Docker layers caching, dropping execution times from 40 to 16 minutes.

Multi-Architecture Images

Built support for arm64, amd64, and RISC-V compile layers inside GitHub runners.

Upstream Stability PRs

Integrated core code improvements and tests verifying dependency trees on cross-platform runs.

// system pipelines

Projects & Deployments

Production clusters and platforms designed and managed by Yasindu.

Live
hurrypay ~ gitops status
RKE clusters: 3 nodes active
ArgoCD sync: 8 apps synced (healthy)
security: zero-trust gateway active (ZTNA)

FinTech GitOps Platform

Production payments environment managed via GitOps on RKE Kubernetes. Configured automated GitLab CI/CD pipelines, saving 50% build time. Secured hybrid infrastructure (Alibaba Cloud + on-prem) with Zero Trust access control gates and Authentik SSO.

RKE K8s ArgoCD GitLab CI Alibaba Cloud Zero Trust Authentik
3
Nodes
8
Synced Apps
50%
Build Speedup
Active
geodd ~ GPU monitoring
k3s clusters: 5 bare-metal nodes active
Cilium CNI: network policy status: enforcing
monitoring: Prometheus scraping 12 GPU metrics

AI Inference Bare-Metal Cluster

Custom bare-metal container architecture provisioned via Proxmox VE and Canonical MAAS. Deployed lightweight k3s Kubernetes clusters running Cilium CNI for low-latency AI training/inference. Integrated Prometheus/Grafana alerts for GPU memory usage.

k3s K8s Cilium CNI Helm Proxmox VE MAAS Prometheus
5
BM Nodes
12
GPU Scrapes
<1ms
CNI Latency
Complete

Apache Airavata CI/CD Platform

Modernized build infrastructure and container release pipelines for Apache Airavata during Google Summer of Code 2025. Refactored legacy Ansible playbooks to simplify cluster configuration provisioning. Automated cross-platform tests across GitHub Actions.

GitHub Actions Ansible Docker Apache Airavata GSoC 2025
airavata ~ buildcheck
actions run: test & release automation complete
Ansible provisioner: playbook dry-run success
platforms: arm64 · amd64 · RISC-V builds online
Multi-Arch
Build Target
35%
Setup Time Saved
27+
PRs Merged
// written knowledge

Technical Writing

Tutorials and research posts published on Medium.

Read More Articles on Medium
// freelance consulting

Fiverr Services

On-demand DevOps configurations and systems support contracts.

Yasindu Fiverr Profile

Yasindu

@wpdesigner12
5-Star Seller View Fiverr Gig

DevOps & Cloud Infra Automation

Provision VPC systems, setup Docker containers, deploy Kubernetes pods, configure Nginx paths, automate Let's Encrypt SSL setups, and build Prometheus dashboards.

WordPress Hosting Optimization

Deploy WordPress setups onto fast virtual private servers (VPS), optimize database queries, set server cache engines, configure CDN distributions, and adjust security gates.

Linux Systems Administration

Ubuntu, Debian, and CentOS configuration support. Wrote automated shell scripts handling cron task backups, cron sync tasks, firewalls setups, SSH keys setups, and system upgrades.

Client Testimonials

// professional verifications

Certifications

Certified Kubernetes Administrator (CKA)

Cloud Native Computing Foundation Earned

AWS Solutions Architect Associate

Amazon Web Services In Progress

GitHub Actions Certification

GitHub Inc. Earned

AWS Cloud Quest: Cloud Practitioner

Amazon Web Services Earned

HashiCorp Certified: Terraform Associate

HashiCorp (via KodeKloud) Earned
// academic degrees

Academic Education

Bachelor of Science (Honours) in Computer Science

University of Bedfordshire, Delivered via SLIIT (Sri Lanka)

October 2023 – October 2026 (graduation in progress)
Operating Systems Computer Networks Distributed Service Architectures Cloud Computing
// connect

Let's build systems together

Whether you're looking for an SRE to harden cluster loads, a DevOps consultant to configure GitOps integrations, or a freelance administrator to resolve server failures, I would love to connect.

LinkedIn Profile

linkedin.com/in/yasindu-dissanayake

GitHub Profile

github.com/mryashlk

Fiverr Services

Hire for Freelance Support

Medium Articles

Read Technical Tutorials
guest@mryash.dev ~ bash
➜kubectl get pods -n opportunities
 
NAME READY STATUS
yash-sre-pod 1/1 Running
yash-devops-pod 1/1 Running
 
➜./contact.sh --via linkedin
 
✔ Connection tunnel established.
✔ Response ETA: < 24 Hours.
✔ Redirect target: linkedin.com/in/yasindu-dissanayake
 
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