About

Hi, I’m Kai.

I build and operate mission-critical infrastructure for blockchain networks, cloud-native platforms, and distributed systems.

Over the past several years, I’ve worked across DevOps, platform engineering, and Web3 infrastructure—operating validator and full-node fleets, deploying smart contract services, automating cloud platforms on AWS, and designing Kubernetes-based production environments.

Beyond engineering, I’ve founded and operated crypto-focused projects, built developer communities, and mentored engineers transitioning into backend, cloud, and DevOps careers.

My interests lie at the intersection of:

• Cloud Native Infrastructure
• Blockchain & Validator Operations
• Distributed Systems
• Observability & Reliability Engineering
• Linux Kernel

I enjoy sharing practical lessons from real-world production environments—from Kubernetes internals and Linux networking to blockchain node operations and Web3 infrastructure.

Areas of Interest

DevOps & Platform Engineering

• Kubernetes
• Terraform
• GitOps (Argo CD)
• CI/CD
• Cloud with AWS
• Service Mesh (Istio)

Observability

• Prometheus
• Grafana
• Loki

Linux & Networking

• Linux Kernel
• TCP/IP
• Network Security
• DDoS Mitigation
• DNS

Blockchain Infrastructure

• Validator Operations
• Full Node Operations
• Smart Contracts

Programming

• TypeScript
• Python
• Distributed Systems

Connect

• GitHub: github.com/play-builder
• YouTube: youtube.com/@play-builder47
• LinkedIn: linkedin.com/in/changsuk-jeon
• Email: playbuilder47@gmail.com