Brandon Wie | Software Engineer

Brandon (Seokhyun) Wie

All Posts EN / KR

Software engineer writing about backend systems, DevOps, and lessons learned building real products.

Work

Arch Calendar — The Calendar That Remembers Everything · Lead Backend

Led backend from legacy to public launch — multi-account calendar sync, payments, and real-time updates processing 10M+ events at scale.

Project Crucio — AISecOps Knowledge Platform · Creator

Zero Trust security for generative AI on on-premise infrastructure. In development — demo live.

Recent Posts

Mar 26, 2026 ↻

WAF Allowlist Patterns — Block-by-default WAF approach using route allowlisting. Stronger security than

Mar 26, 2026 ↻

Redis and BullMQ Queue Patterns — Comprehensive guide to Redis-backed job queues with BullMQ in Node.js/NestJS

Mar 26, 2026 ↻

AI PR Review Validation Patterns — Common patterns where AI code reviewers (Claude, Copilot, Codex) produce false

Mar 24, 2026 ↻

Claude Code Agent Teams — Experimental feature for orchestrating multiple Claude Code instances as a coordinated team with shared task lists and inter-agent messaging

Mar 24, 2026 ↻

Gemini Asymmetric Embeddings — Gemini's text-embedding-004 uses asymmetric embedding with task_type to encode queries and documents differently, producing better retrieval results than symmetric models.

Mar 24, 2026 ↻

RAG Hybrid Search Architecture — Why single-method retrieval fails and how fusing dense, sparse, fuzzy, and managed search with Reciprocal Rank Fusion builds a retrieval pipeline that handles both semantic understanding and keyword precision.

Mar 24, 2026 ↻

pgvector HNSW Index in PostgreSQL — You don't need a dedicated vector database for semantic search — pgvector with HNSW indexes handles under 100K vectors at over 95% recall, right inside PostgreSQL.

Mar 22, 2026 ↻

EBS vs EFS: AWS Storage Comparison — Understanding when to use EBS (block storage) vs EFS (network filesystem).

Mar 22, 2026 ↻

ECS Autoscaling Patterns — Best practices for implementing ECS service autoscaling with migration task

Mar 22, 2026 ↻

NAT Gateway Architecture — Understanding NAT Gateway placement and VPC network flow.

→ See all 98 posts