Han Highemerly

Network & Cloud Engineer

Networking & Web Performance & Web Security & Site Reliability Engineering

Selected skills

Networking & HTTP

TCP/IP BGP MPLS IPv6 Authoritative DNS HTTP TLS/mTLS

e.g. TCP Congestion Control (CUBIC, BBR, etc.) e.g. Optical interface (1GE, 10GE, 100GE) e.g. 5G low-latency (URLLC)

Cloud & Ops

Nginx Contents Delivery Object Storage Kubernetes Prometheus Grafana Web performance (Core Web Vitals)

e.g. k8s, GitOps, Observability (VictoriaMetrics + Loki + Grafana)

Application

Web security (OWASP Top 10, etc.)

Business

Project management English (Business level)

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Featured Projects

Click to check service status

Self-hosted Mastodon with custom patches

Event management SaaS for Fediverse communities. 100+ users.

Single link to post simultaneously to Fediverse and legacy social networks.

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Accounts

@highemerly@handon.club

X (formerly Twitter)

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Last updated March 2026 Contact