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Achievement: Pull Sharkx4Achievement: Pair Extraordinairex4Achievement: YOLOAchievement: Quickdraw

Achievements

Achievement: Pull Sharkx4Achievement: Pair Extraordinairex4Achievement: YOLOAchievement: Quickdraw

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phsb5321/README.md

Pedro H S Balbino · Senior AI & Full-Stack Engineer

I build audit-grade AI for regulated workloads: RAG and agents that ship signed, reproducible, and survive the audit. 6 OSS tools, every release attested.

Shipped (anonymized clients · real numbers)

  • Multilingual education chatbot, 100K+ DAU: 4-agent LangGraph + Azure OpenAI RAG; +40% knowledge-base precision. (global EdTech platform)
  • Event-driven retail backend, ~10K transactions/day: decomposed a 1M+ LOC monolith into per-channel BFF + broker + dispatcher (strangler-fig); checkout p99 ≤ 500 ms. (tier-1 LATAM retailer)
  • Compliance-grade RAG for a tier-1 LATAM bank: ~10K filings/day under LGPD + 5-year audit replay; forced-citation + span validation → zero hallucinated decisions in production.
  • Legal-domain RAG on AWS Bedrock: 15M-document corpus across 5 jurisdictions; deterministic citation validator. (LATAM legal-tech)

Open source: a verifiable supply chain

github.com/yolo-labz: tools shipped with Sigstore-signed, SLSA/in-toto-attested releases + dual-format SBOMs (CycloneDX 1.7 + SPDX 2.3). OpenSSF Scorecard up to 7.9. Verify any release with gh attestation verify / cosign.

  • wa (Go): WhatsApp Multi-Device daemon + JSON-RPC client; 20 signed releases, multi-arch (deb/rpm/apk/darwin), Go-native SBOMs + OpenVEX.
  • kokoro-speakd (Python): persistent Kokoro TTS daemon, <500 ms warm calls. pip install kokoro-speakd.
  • claude-mac-chrome (Shell): deterministic multi-profile Chrome automation; Scorecard 7.9.
    • linkedin-chrome-copilot, claude-classroom-submit, fand.

Latest

Recent releases:

Writing:

What I build

  • AI / LLM: RAG (pgvector · hybrid + rerank), agents (LangGraph), MCP integrations, eval harnesses
  • Backend: Go · Python · TypeScript (NestJS / Node); event-driven (Kafka, SQS/SNS), outbox + saga + idempotency
  • Cloud / infra: AWS (Bedrock, Lambda, ECS, Step Functions), Docker, Kubernetes, Terraform; a private 5-host NixOS / nix-darwin fleet (200+ modules, reproducible builds)
  • Data: PostgreSQL + pgvector, Redis, OpenTelemetry

Credentials

AWS Solutions Architect – Professional · Google Data Analytics · on GitHub since 2017

Find me

Portfolio · Blog: architecture writeups (C4 + Y-statements + fitness functions) · LinkedIn · pedrobalbino@proton.me

Pinned Loading

  1. yolo-labz/claude-mac-chrome yolo-labz/claude-mac-chrome Public

    Chrome multi-profile automation for Claude Code on macOS. Local State catalog + AppleScript IDs.

    Shell 1

  2. yolo-labz/fand yolo-labz/fand Public

    Apple Silicon fan control daemon. Temperature-driven curves. SLSA L2 signed. nix-darwin module.

    Rust

  3. yolo-labz/kokoro-speakd yolo-labz/kokoro-speakd Public

    Persistent Kokoro TTS daemon over Unix socket. Sub-500ms warm-call latency. Python + ONNX.

    Python

  4. yolo-labz/linkedin-chrome-copilot yolo-labz/linkedin-chrome-copilot Public

    LinkedIn workflow copilot for Claude Code. PII-gated. Delegates Chrome I/O to claude-mac-chrome.

    Shell

  5. yolo-labz/wa yolo-labz/wa Public

    Persistent WhatsApp daemon over Unix socket. SLSA L2 signed. Allowlist + rate limiter. Sub-second warm-call latency.

    Go 1

  6. yolo-labz/claude-classroom-submit yolo-labz/claude-classroom-submit Public

    Google Classroom submission CLI. REST API + OAuth. Bypasses Drive Picker iframe. Pure stdlib Python.

    Python