Homelab Practice in Infrastructure and Kubernetes
Built self-hosted infrastructure and a small Kubernetes cluster to practice observability, security operations, GitOps workflows, and platform basics.
DevOps / DevSecOps Portfolio
Building systems I can reason about, operate, and improve.
Hieu Nguyen works on AWS infrastructure, automation, and practical systems work, including a self-hosted homelab.
Featured Case Studies
Operational stories with clear constraints, actions, and impact.
OperationsScalabilityContainers
When Managing Servers Stops Scaling: The EC2 Bottleneck
Infrastructure growth outpaced operational capacity. As business requirements scaled, the number of EC2 instances multiplied across environments, turning day-to-day maintenance into a time sink.
Sep 2025Published
ArchitectureTrade-offsCost Optimization
Pragmatic Architecture: Over-Engineering is a Tech Debt
Cloud "best practices" can become a liability if they are applied blindly to small workloads without considering business scale and operational constraints.
Jun 2025Published
FinOpsTrade-offsOperations
Cost Optimization vs. Operational Complexity: The Hidden Cost of Saving Cent
Cloud cost reduction is a trap if it introduces maintenance overhead and operational risks that outweigh the actual dollar savings.
Jan 2025Published
Timeline Highlights
AWS Platform Ownership
Managed multi-team AWS environments. Architected core IAM, logging, security, and monitoring foundations, and drove Terraform adoption.
Infrastructure and Multi-Account AWS
Shifted infrastructure to Infrastructure as Code (IaC) using Terraform. Isolated staging and production environments by designing a multi-account AWS structure.
Serverless and Cloud Operations
Owned AWS application infrastructure. Optimized Lambda scaling and built automated deployment pipelines to modernize legacy and production systems.
Selected Homelab
KubernetesK3s
Homelab Project: Kubernetes and Platform Basics
A small homelab project for learning cluster operations, GitOps, and platform concepts.
Jul 2026Published
DevSecOpsSecurity
DevSecOps Exploration Lab
A self-hosted environment built on Proxmox to move from pure DevOps into DevSecOps.
Mar 2026Published