Hi, I'm Dumka Esaenwi
Cloud / DevOps Engineer & PhD in Gas Engineering
Writing about cloud architecture, DevOps practice, and the road from research engineering into software.
About
I'm a Cloud & DevOps Engineer with a PhD in Gas Engineering. My background in research gave me a habit of testing things rigorously before trusting them in production; my work in cloud and DevOps is where that habit now lives. This site is where I write up what I learn building, breaking, and hardening infrastructure.
Skills & Tools
- Cloud Architecture (AWS / Azure / GCP / Alibaba Cloud)
- Kubernetes & Containers
- CI/CD (GitHub Actions, Jenkins)
- Infrastructure as Code (Terraform)
- Linux & Networking
- Python & Node.js Automation
- Monitoring & Observability
- Site Reliability Engineering
Experience
Chief Technology Officer (CTO) & Advisory Board Member · SKILL.SCH ↗
- Set technology strategy and own the engineering roadmap for the platform.
- Lead architecture, infrastructure, and delivery pipeline decisions end to end.
Cloud & DevOps Engineer · Bairny&Co
- Own cloud infrastructure across AWS, Azure, GCP, and Alibaba Cloud.
- Drive consistent, repeatable deployments with CI/CD and Infrastructure as Code.
- Focus on monitoring and observability so systems stay reliable as they scale.
PhD Researcher, Gas Engineering · University of Port Harcourt
- Researched gas engineering systems with a rigorous, evidence-first methodology.
- That research discipline now shapes how I test and validate infrastructure work.
Latest Articles
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Monitoring and Observability on Azure with Azure Monitor and Application Insights
KQL queries that answer real incident questions, alert rules tuned to avoid paging on noise, and Application Insights distributed tracing wired into AKS.
Cost Optimization on Azure: Reservations, Spot VMs, and Budgets That Actually Alert
The specific levers that moved our Azure bill the most — Reserved Instances vs. Savings Plans, Spot VM eviction handling, and budget alerts that fire before the invoice does.
Kubernetes on Azure: AKS vs. Self-Managed, and When to Choose Which
Azure Kubernetes Service removes the control-plane burden entirely and charges nothing for it on the free tier — here's when that trade is worth it, and where AKS-specific behavior differs from EKS or GKE.