🌟 Featured — Harken
Your agent cannot listen to audio. Harken fixes that — locally. MCP server + CLI in a single 13 MB static Rust binary (whisper.cpp via FFI): no Python, no ffmpeg, no API key. On crates.io.
$ whoami
pedro-montezuma — dev lead @ jusimples (brazilian legaltech AI)
$ cat summary.txt
Backend engineer: Python, Rust, cloud infrastructure and AI systems.
Primary engineer of a legal RAG platform, zero to production.
Security-first mindset, observability always, automate everything.
$ cat /etc/team
Vasco da Gama ⚫⚪Dev Lead / Lead Backend Engineer — JuSimples
Apr 2026 – Present
Technical lead for the backend and production infrastructure of JuSimples' Brazilian LegalTech AI platform.
- Architecture and technical decisions for the production system.
- Continued evolution of the RAG pipeline, security, and observability.
- Day-to-day operation: deployments (Cloud Run), monitoring, and incident response.
Nov 2025 – Apr 2026
Primary engineer responsible for taking the AI platform from zero to first production launch (April 2026).
- Backend in Python and FastAPI.
- RAG pipeline over Brazilian legislation (LegalBERT, pgvector).
- Hybrid authentication (JWT + API keys) with allowlist-first practices.
- Observability: structured JSON logs, metrics, and tracing.
- GCP infrastructure as code via Terraform (Cloud Run, Cloud SQL, Secret Manager).
| Languages & Backend | Python · FastAPI · SQL / PostgreSQL with pgvector · SQLAlchemy / Alembic · Rust (CLI tooling, Cargo) · Shell Script (Bash/Zsh) · JavaScript / TypeScript |
| Cloud & Infrastructure | GCP — Cloud Run, Cloud SQL, Secret Manager, Cloud Storage, Cloud Scheduler, IAM · Terraform · Docker · Linux administration · Virtualization (KVM/VMware/VirtualBox) |
| AI & Data | RAG · Vector databases (pgvector) · LLM integration (Gemini/OpenAI) · MCP servers (Model Context Protocol) · Local speech-to-text (whisper.cpp) · Embeddings (LegalBERT/sentence-transformers) · Web scraping |
| Observability & Security | Structured JSON logging, OpenTelemetry, Prometheus · JWT, OAuth2, API keys, allowlist patterns · LGPD-aware telemetry and privacy |
| Tools | Git, GitHub — PRs, Issues, Actions |
🎙️ Harken
Speech-to-text for AI agents, fully offline. As an MCP server, it gives any agent (Claude Code included) the ability to hear audio; as a CLI, it batch-transcribes files and folders. One 13 MB static Rust binary on whisper.cpp via direct FFI — no Python, no ffmpeg, no API key. Published on crates.io, MIT/Apache.
harken voice-note.opus # one file
harken ~/Downloads/meetings/ # whole folder, recursive
harken chat-export.zip # pull voice notes straight out of a WhatsApp export
harken mcp # MCP server: give your agent earsRust whisper.cpp MCP crates.io
- monitor_linux_ia — Linux system monitoring with AI-generated HTML reports.
- backup-universal — Smart backup system with project-type detection and automatic exclusions.
- linux-storage-manager — Storage cleanup and archiving with retention policies.
- iaprojeto-setup — AI-driven project scaffolding from natural-language descriptions.
- my-systems-showcase — Documentation of Linux setups: dual-boot, KVM/QEMU labs, security environments.
- 🔧 Breaking my Linux setup (and fixing it)
- 📚 Reading docs at 3 AM
- 🎯 Automating things that don't need automation
- ⚫⚪ Thinking about Vasco
Languages: Portuguese (native) · English (fluent — Cambridge FCE) · Spanish (basic)
- Universidade Federal Rural do Rio de Janeiro (UFRRJ) — Bachelor's in History (Licenciatura) · 2020 – Present
- Alura — Tech professional development courses (2025): programming logic, Git/GitHub, Linux CLI (DevOps), frontend fundamentals
- CNA / Cambridge — English, FCE certification (Cambridge English First)