Digital Rain Technologies
Augustin Chan

Building systems that reason

Informatica · 12 years · APAC/EMEAUC San Diego · Cognitive Science (Computation)Consensus HK 2025 Winner

Building now

Also shipping

Six Lines

App Store

Native iOS I-Ching and Chinese almanac built on primary sources — 3,600+ scanned manuscript pages, character-by-character translations.

SwiftUIiOS
App Store →

8-Bit Oracle

Live

Modular I-Ching divination with layered architecture — casting, interpretation, and voice as independent modules. Four languages.

Next.jsModular
Try it →

Research Intelligence

Active

Ingests hundreds of articles and papers daily, ranks by relevance, publishes to theqi.news and thelongview.news. RAG-powered research assistant.

DSPyRAG
@theqi0 on X →

Approach

10 years building master data management systems at Informatica, now applied to AI. The discipline is the same: systems need to be robust before they can be clever.

DSPy optimization, skill-based agent workflows, structured evaluationreasoning patterns →
Postgres-native memory: pgvector, JSONB, semantic search without separate vector DBsmemory systems →
Concurrency patterns from distributed systems — isolated subagents, no shared state
On-device ML via Apple Foundation Models, CoreML

Elsewhere