Lee Ying-Chieh (Luke) — Backend Engineer

01 Experience

Go Backend Engineer

Hongda Customer-Service Technology

2026.03 – Present

Integrated and extended the open-source IM framework OpenIM into the company's microservice stack. Go · gRPC · K8s · Kafka · Redis

Rearchitected message push, O(N) broadcast → O(1) targeted delivery: a Redis connection index plus gRPC targeted delivery, resolving traffic amplification under Kubernetes horizontal scaling; graceful degradation to broadcast on pod failure.
Introduced AI-assisted dev & ops (AIOps / DevEx): a unified AI-callable tool layer, structured logging, and on-demand Jenkins deploys that cut deploy time from 14–16 min to 2–3 min.
Contributed gRPC interfaces and table-sharding design for a multi-tenant plan-management system (state machines, company_id isolation).

Backend Engineer

Future Infinity Intelligence

2023.08 – 2025.09 · 2 yrs 2 mos

One of the core backend engineers on a large sports-data / streaming platform, spanning members, payments, auth, content and API gateway. Go · gRPC · GraphQL · TiDB · Kafka · APISIX

Payments / top-up microservice — built from scratch: designed top-up, currency, payment-channel-config and subscription gRPC services with go-kratos (layered architecture + Wire DI), wiring cross-service balance updates.
Several third-party OAuth logins: Apple (multi-audience, Web + iOS), social accounts (PKCE); designed a login toggle and an auth-free route allowlist.
API Gateway extension: a Go plugin for APISIX doing site-wide config sync and IP allow/deny control (multi-tenant siteId).
AI content generation & crawler: OpenAI-generated match-analysis articles (ZH/VI bilingual); rebuilt the crawler core and a backfill API with batched processing to ease DB load, plus expert assignment and dup-content conflict detection.
GraphQL admin backend: permission menus, activity management and audit logs.

PHP Engineer

Pinyou Technology

2021.08 – 2023.08 · 2 yrs 1 mo

Member-system maintenance & optimization; PHP crawlers, payment integration, blockchain applications (non smart-contract). Laravel · ThinkPHP · MySQL · Redis

2020 – 2021 PHP Engineer, Luhong Tech — Laravel + jQuery, Python crawlers (Selenium / Flask)

2019 – 2020 PHP Backend Engineer, Xinling Tech — YII API, module dev & system migration

2012 – 2019 PHP / system-integration roles — web backend, payment integration, DB design (incl. freelance)

02 Selected Projects

Personal flagship · solo

MsgMesh — multi-tenant event bus msgmesh.alderflux.com ↗

Designed and built from zero with AI assistance: keeps Kafka behind a gateway, exposing only HTTP / SSE / WebSocket / MCP so apps and AI agents subscribe "in one line"; auth, rate-limiting and multi-tenant isolation handled by the platform. Live (public beta), with Prometheus / Alertmanager. A Go monorepo modular monolith — single-binary deploy, 6 service boundaries, Compose/Helm split path ready.

Go · Kafka · PostgreSQL · Redis · etcd · SSE/WebSocket · MCP · Helm/K8s · Prometheus

Personal

Self-hosted dev / deploy infrastructure (Proxmox · Docker · VPS)

Full-lifecycle self-sufficiency from environment setup to secure production ops (key for remote work): Proxmox (PVE) isolated LXC dev environments and shared middleware (PostgreSQL / Redis / MongoDB); VPS services via Docker Compose, with reverse-proxy automation, Let's Encrypt TLS, and fail2ban / UFW hardening.

Personal

CI/CD automation — DB migration + automated testing

Built a CI/CD pipeline integrating database migration with automated testing, so each deploy applies schema changes and runs tests automatically — reducing human error and deploy risk.