About

Backend engineer at Ubiquiti. NTU Comm. Eng. MS. Former startup co-founder. I build scalable systems, break things in staging, and write about both.

# Experience

Ubiquiti Inc.—Cloud Backend Engineer
2025 —
  • Architected multi-source admin permission system (RBAC) with DynamoDB single-table design
  • Optimized Admin List API from 5s to sub-200ms for 10K+ admin organizations
  • Built async event processing infrastructure (Worker Hub) with SQS/SNS
Cake Taiwan—Senior Backend Engineer
2023 — 2025
  • Led ATS overhaul: 100+ APIs, 20+ tables, hundreds of thousands of records migrated
  • Saved NT$3-4M annually by optimizing Algolia search costs
  • Introduced FastAPI with clean architecture to replace legacy Rails
Cooby—Backend Engineer
2022 — 2023
  • Migrated infrastructure from Heroku to AWS — 75.5% cost reduction
  • Built real-time analytics system with DynamoDB + Redshift
  • Company selected for Forbes Asia 100 To Watch 2022
Remoneer—Co-Founder
2019 — 2021
  • Built self-service BI platform with web crawling and OCR search
  • Created remote-work job search platform for Taiwan market

# Education

National Taiwan UniversityM.S. Communication Engineering
2018 — 2020
National Taiwan University of Science and TechnologyB.S. Electrical Engineering
2014 — 2018

# Stack

Go, Python, TypeScript, FastAPI, React, Next.js, AWS, DynamoDB, Terraform, PostgreSQL, Redis, Elasticsearch, Docker, ECS, SQS/SNS, Claude API