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System & DevOps Engineer
Infrastructure that scales. Systems that breathe. Ops that don't wake you up at 3am.
user:
name: Wai Yan (sc3p73r)
role: System & DevOps Engineer
focus:
-
- Cloud-Native Infrastructure
- Kubernetes, Service Mesh & Container Orchestration
- CI/CD Automation & Infrastructure as Code (IaC)
- Observability, automation & SRE practices
open_source_focus:
- Infrastructure Automation & Reusable Bash/Shell Tooling
- Kubernetes Manifests, Helm Charts & Operator Deployment
- Linux Hardening Scripts & Terraform Infrastructure Modules
philosophy: "Automate the toil. Document the why. Ship with confidence."
status: 🚀 Architecting resilient & self-healing systems
| Domain | Skills |
|---|---|
| Linux & Systems | Kernel tuning, systemd, process management, filesystem, performance profiling |
| Networking | TCP/IP, DNS, firewalling (iptables/nftables), VPN, reverse proxying, CDN |
| Containers | Docker, image layering, Compose orchestration, networking, volume management |
| Kubernetes | Cluster operations, workload management, Helm, RBAC, ingress, resource policies |
| IaC | Terraform — module design, state management, remote backends, drift detection |
| CI/CD | GitLab CI pipelines, stages/jobs, artifacts, environments, registry integration |
| Web Servers | Nginx/Apache config, TLS hardening, load balancing, caching strategies |
| Cloud | EC2/VPC/S3/IAM (AWS), resource management across DigitalOcean & Azure |
| Databases | PostgreSQL & MySQL administration, replication, backup/recovery |
| Scripting | Bash automation, cron, log analysis, deployment scripts |
| Observability | System metrics, log aggregation, alerting fundamentals |
I write about practical DevOps on Vital Tech Blog.
Check the blogs for the latest posts — topics include system reliability, networking deep-dives, and container war stories.
- 💬 Discussions on Linux, containers, Kubernetes, and cloud infra
- 🔍 Reviewing or collaborating on open-source DevOps tooling
- 📬 Reach out via LinkedIn or open an issue/discussion on any of my repos
"The best on-call rotation is the one where nothing pages."