Alejandro Moreno

Summary

Self-taught AI and backend engineer who designs, ships, and distributes production software end-to-end: open-source tools on PyPI and the VS Code Marketplace, a multi-tenant SaaS with auth and Stripe billing, and a cognitive AI layer with multi-LLM routing. Strongest in Python/FastAPI, LLM systems (routing, RAG, MCP, agentic loops), and the backend plumbing that keeps them alive.

Skills

AI / LLM: Multi-LLM routing (Groq, Claude, Gemini), MCP (servers + clients), agentic tool loops, RAG, embeddings/semantic memory

Languages: Python (expert), Rust (advanced), TypeScript, SQL, Lua

Backend: FastAPI, async workers, daemon & queue architecture, SQLite, REST/SSE, OAuth2/JWT, Stripe webhooks

Frontend: Next.js, React, Tailwind CSS, App Router

Infra / DevOps: PM2 (multi-service), Cloudflare (tunnels, Pages, CF-for-SaaS), Linux, SSH hardening, multi-tenant isolation

Integrations: Stripe, Groq, OANDA, Alpaca, Meta Graph API, Resend, Cloudflare API

AI Dev Tools: Claude Code (daily driver); ships most code through a self-built MCP tool layer

Selected Projects

Vigil: Observability & Awareness Infrastructure for AI Agents

Python, FastAPI, MCP, SQLite, Stripe

PyPI: vigil-agent · app.vigil-agent.com · github.com/AlexlaGuardia/Vigil

Open-source package + hosted multi-tenant SaaS: one-line MCP instrumentation (latency p50/95/99, per-tool error rates, silent-failure detection) plus an awareness layer (signal bus, 90s daemon-compiled context, frame-based tool filtering, session handoff)
Hosted tier: per-tenant SQLite isolation with LRU-cached connections, GitHub OAuth, hashed API keys, Stripe billing, ~8,400 lines, 311 tests, 4 PyPI releases

Warden: Governed MCP Server for AI Agents

Python, FastAPI, MCP, RBAC, policy engine

warden.alexlaguardia.dev · github.com/AlexlaGuardia/warden

Governance layer that authorizes every agent tool call outside the model: RBAC policy engine with region row-scoping and field-level redaction, so a hallucinating or compromised agent still cannot exceed its grants
Grounded eval harness: a deterministic oracle computes ground truth through the governance layer and a stronger model judges a weaker model's answers against that reference; live demo with enforced policies

Critik: AI Code Security Scanner

Python, Tree-sitter, Groq / Llama 3.3 70B

PyPI: critik · VS Code Marketplace · GitHub Action · critik.dev

Two-pass scanner: regex + AST flag candidates, then an LLM reviews each finding with full-file context to drop false positives and write fixes, ships as CLI, VS Code extension, GitHub Action, and pre-commit hook
Baseline fingerprinting for legacy-codebase adoption, custom YAML rules, watch mode, ~4,400 lines, 138 tests

Akatskii: Cognitive AI Layer

Python, FastAPI, Groq, Claude, Gemini, fastembed

routing extracted to PyPI: llm-route · github.com/AlexlaGuardia/Akatskii

Hybrid regex + LLM router classifies inputs into 5 thought types and routes by cost/complexity, ~80% resolve instantly and free; agentic tool loop runs up to 15 iterations with parallel calls over MCP
Semantic memory (fastembed/ONNX, hybrid keyword + cosine recall) and a compaction daemon delivering ~3x context compression across sessions

Guardia Content: AI SaaS Platform

Python, FastAPI, Next.js, React, Stripe

Built end-to-end; public launch pending Meta platform approval

Social-media automation pipeline: upload → AI styling (SDXL) → caption (Llama 3.3 70B) → quality gate → schedule → multi-platform post; full Stripe billing, Meta OAuth2, and custom domains via Cloudflare-for-SaaS
Multi-service backend under PM2 with client dashboard, admin HQ, and public per-client microsites

Open Source & Writing

Community: contributor to the MCP ecosystem: merged PR to awesome-mcp-servers, plus issue triage and proposed fixes on PrefectHQ/fastmcp · Distribution: 8 packages published to PyPI and a VS Code Marketplace extension · Writing: 8+ technical articles on building MCP servers & AI-agent infrastructure (Dev.to)

Also Shipped

Stampwerk: live AI freelancer SaaS (stampwerk.com) · guardia-mcp: 95+ tools, frame-filtered (50–90% fewer tokens), OAuth 2.1, behind 3 AI interfaces · MCP Server Suite: 262 tools across 4 PyPI servers · Supra: from-scratch 3D FPS engine in Rust (85K lines, 8 crates) · Scionbee: greenhouse WPS-compliance PWA (Next.js, Prisma) · Paradise: 4-agent multi-strategy trading system · mcpcat & llm-route: open-source dev tools (PyPI)