Last updated: 5 April 2026
AI Systems Engineer | Creator of Project Athena | Singapore 🇸🇬
I build agentic AI infrastructure that turns generic LLMs into personalised operating systems — own the state, rent the intelligence.
Website: winstonkoh87.com
| Project | What It Does | Engineering Highlights |
|---|---|---|
| Athena | Open-source cognitive augmentation layer — persistent memory, structured reasoning, full data ownership across any AI model (Gemini, Claude, GPT) |
• Hybrid RAG pipeline (BM25 + semantic + knowledge graph + RRF fusion) • 85% recall @ $0 infrastructure cost (Supabase free tier) • 150+ reusable protocols, 66 slash commands, 30+ skills • Conditional skill activation (~40-60% token savings) • 7 IDE integrations, MIT licensed |
| Portfolio | 11-page performance-first portfolio with 26 articles and 6 live demos |
• Astro 5.0 + Tailwind CSS + React • Zero-JS-first architecture, 99/100 Lighthouse |
Languages & Frameworks
AI & Data
Tools & Infrastructure
A platform-agnostic cognitive augmentation layer. Own the state. Rent the intelligence.
| Metric | Value | What It Means |
|---|---|---|
| Sessions | 1,500+ | Continuous context across 90+ days of bilateral use |
| Protocols | 150+ unique | Open-sourced decision frameworks (reasoning, risk, execution, research) |
| Hybrid RAG | 85% recall | BM25 + semantic + knowledge graph + FlashRank reranking |
| Skills | 30+ clustered | Cognitive Cluster architecture — co-activated skill pipelines with conditional activation |
| Case Studies | 430+ | Documented friction → solution patterns with empirical outcomes |
| Scripts | 650+ | Full automation stack (boot, shutdown, search, sync, hooks) |
Key Engineering:
- Hybrid Search: pgvector + BM25 keyword + knowledge graph + RRF fusion — outperforms basic RAG by 48pp (92% vs 44%)
- Conditional Skill Activation: Path/topic-triggered dormant skills reduce prompt bloat by ~40-60% (Protocol 530)
- Multi-Agent Orchestration: Coordinator synthesis discipline with anti-delegation enforcement and token budgeting
- Atomic Writes: POSIX-compliant data safety for all memory operations
- Privacy Pipeline:
block_secrets.pygit hook + PII regex scrubber + public/private repo guard - Semantic Cache: LRU with disk persistence, cosine matching, and Supabase delta sync
- Zero Infrastructure Cost: Runs on Supabase free tier + local compute. No cloud bills.
| Capability | Evidence |
|---|---|
| RAG Pipeline Engineering | Production hybrid search: BM25 + semantic + graph + RRF fusion. 85% recall, $0/month infra |
| Agentic AI Systems | 150+ protocols, 66 workflows, 30+ skills — full agent lifecycle (boot → work → shutdown) |
| Multi-Agent Coordination | Parallel worktree orchestration, coordinator synthesis, conditional skill activation |
| Full-Stack Web Development | 5 production sites, Astro/React, zero-JS-first architecture |
| AI Consulting | Active client engagements — diagnostics, AI integration strategy, workflow automation |
| Technical Writing | 26 articles, 9.8K+ views — clear communication of complex systems |
- 9.8K Views, 750 Cloners: The Day I Shipped My Brain to the World
- Why I Built My Own Brain (The 5 Pillars of Sovereign AI)
- The Trilateral Feedback Loop: Why One AI is Not Enough
- The Bionic Operator: Why AI Replaces Tasks, Not Humans
- The Anti-Slop Protocol: How to Write 3,000 Words in 3 Hours
- The Vibe Coder's Trap: Why AI Speed Can't Fix Business Physics
Looking for pragmatic builders who:
- Ship fast, iterate, break things at 70% readiness
- Value robustness over cleverness
- Are comfortable with async communication
📬 Reach out: winstonkoh87@gmail.com or DM on LinkedIn
"The best way to predict the future is to build it."