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DevOps & GitOps

Scalable Microservices with Amazon EKS

Designed a production Kubernetes platform on AWS EKS with ArgoCD GitOps, Terraform IaC, private endpoints, strict RBAC and zero-downtime rolling deployments.

Industry: Microservices Platform
Duration: 5 Weeks
Role: Kubernetes Platform Architect
Status: Live in Production
Zero
Downtime Rolling Deploys
RBAC
Strict Developer Access Control
GitOps
Git as Single Source of Truth
Private
EKS Endpoints
The Challenge

Where It Started

Designed a production Kubernetes platform on AWS EKS with ArgoCD GitOps, Terraform IaC, private endpoints, strict RBAC and zero-downtime rolling deployments.

Problems
  • Manual kubectl deployments — no single source of truth
  • No RBAC — every developer had broad cluster access
  • Kubernetes API server exposed publicly
  • Deployments occasionally caused brief service downtime
Our Solution
  • ArgoCD GitOps — Git repository as single source of truth
  • Strict Kubernetes RBAC per developer role
  • Private EKS API endpoints — zero public exposure
  • Rolling deployments with readiness/liveness probes
Architecture

System Overview

Developer Push Code GitHub Repo ArgoCD Sync ArgoCD GitOps Deploy AWS EKS Cluster Ingress + ALB Service A Pods Service B Pods Terraform IaC Private Endpoints RBAC Access Zero-Downtime Rolling Deploy GitOps: Infrastructure state always matches GitHub repository
Implementation

How We Delivered It

Week 1–2
EKS & Terraform Setup
Provisioned the production EKS cluster, VPC networking and IAM roles entirely through Terraform.
Week 3
ArgoCD GitOps Rollout
Connected ArgoCD to the GitHub repository, enabling automatic drift detection and reconciliation.
Week 4
RBAC & Private Endpoints
Locked down API server to private endpoints and configured strict least-privilege RBAC policies per team.
Week 5
Zero-Downtime Rollout
Configured rolling update strategies with health probes and validated zero-downtime deployments in production.
Tech Stack

Technologies Used

AWS EKSArgoCDTerraformALBKubernetes RBACHelm
Results

The Impact We Delivered

Zero
Downtime Deployments
Rolling updates with health checks eliminate deployment downtime.
Strict
RBAC Access Control
Developers can only access exactly what their role requires.
GitOps
Single Source of Truth
Every cluster change is now driven by a Git commit via ArgoCD.
Private
API Endpoints
EKS API server is no longer publicly reachable.
"Kubernetes went from something we were scared to touch to something the whole team trusts and understands. GitOps changed everything for us."
— Platform Lead, Microservices SaaS (Client, Confidential)

Project Details

IndustryMicroservices Platform
Duration5 Weeks
Team Size2 Engineers
RoleKubernetes Platform Architect
StatusLive in Production

Services Used

AWS EKSArgoCDTerraformALBRBACGitOps
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Key Wins

  • Git as single source of truth (GitOps)
  • Zero-downtime rolling deployments
  • Strict least-privilege RBAC
  • Private EKS API endpoints
  • Full Terraform IaC coverage

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