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Hanson-Tsai/README.md
Han-Sing Tsai banner

About Me

Software Engineer @ Phison Electronics: Hyper-Converged Infrastructure (HCI), building AI infrastructure since Sep 2026

What I work on

  • 🤖  AI Infrastructure: LLM serving, GPU scheduling & sharing, multi-node inference
  • 🧱  Hyper-Converged Platforms: compute, storage, and VMs on one Kubernetes stack
  • 🛡️  High Availability: failover orchestration that survives infrastructure failures
  • ⚡  High-Performance Networking: DPDK, eBPF, zero-copy I/O
  • 🔬  Research: published work on 5G core networks & high-performance I/O (IEEE NetSoft & CloudNet, 2023)
  • 📫  Reach me at jerry10127@gmail.com

🛠️ Tech Stack

Languages

Go C C++ Python

Networking & Systems

DPDK eBPF gRPC Linux

AI Infrastructure

KServe vLLM NVIDIA Ceph KubeVirt Cilium

Infrastructure & DevOps

Kubernetes Docker Helm Ansible Prometheus Grafana

Databases & Storage

MongoDB PostgreSQL Redis


💼 Experience Highlights

Software Engineer · Phison Electronics · Hyper-Converged Infrastructure (HCI) · Sep 2026 – Present

  • 🧱  Building Phison's HCI platform, an on-prem Kubernetes stack (RKE2, Cilium, kube-vip, envoy-gateway) unifying compute, storage, and AI inference
  • 🤖  Working on the AI inference layer: KServe, llm-d & vLLM, multi-node inference with leader-worker-set, and GPU sharing with HAMi
  • 💾  Integrating Rook Ceph storage and aiDAPTIV+ KV-cache tiering on Phison ai100 NVMe
  • 🏢  Supporting a multi-tenant platform with Keycloak SSO, KubeVirt VMs, and managed external clusters

Software Engineer · Saviah Technologies Inc. · Aug 2023 – Aug 2026

  • 🚀  Architected a failover orchestration Kubernetes operator — cut service recovery 7.2× (180s → 25s) at 99.9% availability for 50k+ concurrent sessions
  • ⚡  Built an eBPF-based load-balancing dataplane — reduced worst-case rerouting latency 90% (10s → 1s) during control-plane failures
  • 🌐  Designed a topology management system (RESTful APIs) serving 100k+ subscribers across 10+ edge nodes
  • 🔧  Automated the full infra lifecycle with an Ansible framework standardizing 100+ production environments
  • 🧪  Built a CI/CD stress-testing platform simulating 10k+ sessions, used by a 20+ engineer team to catch SLO regressions

📚 Research & Publications

Paper Venue Contribution
X-IO — Unified I/O Interface using Lock-free Shared Memory IEEE NetSoft 2023 Lock-free, zero-copy shared-memory I/O in C + DPDK → 4.1× throughput
L25GC+ — 3GPP-compliant Low-latency 5G Core IEEE CloudNet 2023 DPDK shared-memory stack for Go microservices → 1.61× lower control-plane latency

📈 Contribution Graph

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💬 Let's build resilient systems together!

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  1. nycu-ucr/L25GC nycu-ucr/L25GC Public archive

    Shell 23 9

  2. quantaugur quantaugur Public

    Python

  3. RA3GPP RA3GPP Public

    Go