I build production AI systems: autonomous agents, multi-layer RAG pipelines, evidence-based observability, and multi-tenant cognitive platforms. 15 years in software engineering, focused on AI infrastructure since 2022.
Fully autonomous job application system built on TypeScript + Playwright. Applies to positions, fills forms using a 5-layer answer resolution pipeline, captures multi-source evidence, and audits every application with an independent verification engine.
Architecture highlights:
ApplicationStateMachine— enforces lifecycle transitions at runtime; illegal state transitions throw immediatelyApplicationTruthEngine— evaluates evidence from network captures, screenshots, DOM snapshots, and platform confirmations independently from workflow stateEvidenceCollector— multi-source evidence capture per application for post-hoc auditabilityApplicationTracer— structured observability with per-step timing, retry counts, and error classification
| Metric | Result |
|---|---|
| Applications submitted | 82+ across 3 platforms |
| Evidence coverage | 100% of confirmed applications produce a structured TruthRecord |
| Error categories | 15 categories with RCA and configurable retry policy |
→ github.com/SAMIRRICARDO/vraxia-work-system
"Traditional AI responds when you ask. VRAXIA Sense perceives before you notice."
Three-tier event processing pipeline that monitors external signals and acts autonomously before a human opens the inbox.
| Metric | Target | Production |
|---|---|---|
| Level 0 noise elimination | >70% | 76% |
| Avg. cost per raw event | <$0.001 | $0.000034 |
| Event-to-notification latency | <2 min | ~8 seconds |
| False positive rate | <10% | ~6% |
→ github.com/SAMIRRICARDO/vraxia-sense
Traditional RAG indexes what was written. Human RAG indexes how a person thinks and decides — reconstructing reasoning patterns, not just retrieving text.
Implemented in VRAXIA OS: enterprise platform with 8 departmental AI agents, 1,100+ indexed skills, and multi-tenant BYOK architecture.
ESM · Express + SSE · Local RAG (JSONL + TF-IDF) · BYOK multi-tenant
Token cost tracking · Dynamic model routing · Per-domain batch governance
O Maior Ativo da Sua Empresa — Amazon KDP · June 2026
The first Brazilian book on Human RAG applied to organizational knowledge preservation.