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Felipeness/README.md

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About me

Sou engenheiro de backend e sistemas distribuídos, brasileiro, focado em construir software que resolve problemas reais com vocabulário arquitetural correto e execução cuidada no detalhe. Trabalho diariamente em plataformas multi-tenant de larga escala — Echo-Atende no Superlogica, arquitetura VSA + hexagonal por feature, Express + Temporal workers, MongoDB + Redis, AI integrada via OpenAI — e estou sempre experimentando o próximo passo: Effect-TS, orquestração multi-agente, Rust.

Minha tese autoral é Holonomic Systems — uma aplicação dos holons de Arthur Koestler à arquitetura de software. Cada módulo é simultaneamente um todo (autônomo, com seu próprio domínio, dados e UI) e uma parte (cooperando com outros holons via eventos assíncronos). É a síntese que estou desenvolvendo em The Whole and the Part, com 62 capítulos cobrindo desde o Janus Effect filosófico até produção real (Saga, CQRS, Outbox, Temporal como sistema nervoso).

Em paralelo, estou construindo Nessy (analytics local pra sessões de Claude Code com hybrid search RRF), Holonomic Architecture (boilerplate Fastify + Effect-TS + Temporal que materializa a tese), LicitaWin (SaaS B2B de licitações públicas BR com IA) e contribuindo onde dá em projetos open source que respeito — já tive PRs merged em Prisma, Twenty, Cal.com e Unkey.

Acredito que código é poesia, performance é arte. E que toda boa arquitetura é uma decisão honesta entre autonomia e integração — onde o engenheiro maduro encontra o ponto certo.

"A holon is simultaneously a whole and a part. So is every module worth building." — sobre o Janus Effect, em The Whole and the Part


Now

🔨 Building       Nessy v0.1 — hybrid search RRF over Claude Code sessions
📝 Writing        The Whole and the Part — Chapter Lineage (EN translation)
🧪 Shipping       LicitaWin — AI-powered public procurement SaaS (BR)
🛰  Daily          Echo-Atende @ Superlogica — VSA + hexagonal (Express · Temporal · MongoDB · Redis · BullMQ · Socket.io)
🌱 Learning       Kubernetes · Terraform · Advanced ML · Multi-agent orchestration
🌐 Exploring      Temporal · Rust · Effect-TS · Holonomic Multi-Agent Systems
🤝 Open to        OSS collabs on NestJS · Effect-TS · Claude Code tooling

Building in public

Nano Episodic Session Studio

Local indexer + analytics for all your Claude Code sessions. Hybrid search (BM25 + embeddings + RRF) over ~/.claude/projects/*.jsonl. Single Go binary, zero cloud egress.

Go 1.26 SQLite Ollama Bubble Tea MCP

Open-source book on Holonomic Architecture

Arthur Koestler's holons applied to distributed systems. 62 chapters covering Janus Effect, SCS, vertical slicing, Conway's Law alignment.

Architecture Theory CC BY-SA 4.0

Production reference for Holonomic Systems

Fastify + Effect-TS + Temporal + schema-per-holon. Law of Imports enforced: holons never import from each other, only from @holonomic/shared.

Effect-TS Fastify Temporal Event Sourcing

Healthcare scheduling — DDD reference

Transactional Outbox + Saga + Circuit Breaker. NestJS + Prisma + SQS. Demo only.

NestJS Prisma AWS SQS Redis DDD

Statusline for Claude Code with visual editor

Single Go binary. 16 components, 5 themes, drag-and-drop browser studio. Web UI embedded via //go:embed.

Go React Bubble Tea

Livro aberto sobre Rust em pt-BR

62 capítulos, 28k+ linhas. Filosofia + prática, com comparações com TypeScript, Go e C. Para quem já é senior em outra linguagem.

Rust pt-BR Open book

Enterprise (production work)

Enterprise HR Platform — Yamaha Brazil

Multi-tenant cultural fit assessment system for national HR operations. Multi-unit RBAC, 40-question alignment assessment, advanced reporting + Excel export.

Next.js NestJS 11 Prisma Docker JWT/RBAC

📡 Echo-Atende (private)

Atendimento omnichannel @ Superlogica

Plataforma de atendimento em tempo real — Express + Temporal workers + Socket.io, AI features com OpenAI, observability Datadog. Arquitetura VSA (Vertical Slice) com hexagonal por feature — cada slice tem seus próprios adapters/, ports/, dto/ + use cases, com DI explícita via deps.

Express Temporal MongoDB Redis BullMQ Socket.io Zod Datadog Vitest


Open Source Contributions

Merged upstream in production-grade projects:

Repository Stars PR Contribution
🔌 prisma/prisma Stars #29317 Extract PRISMA_CLIENT_JS_PROVIDER constant — refactor across 4 packages
🛠 twentyhq/twenty Stars #18495 Clear error message on invalid LOG_LEVELS config
📅 calcom/cal.com Stars #28479 i18n pluralization for apps count
🔐 unkeyed/unkey Stars #5251 Error feedback for duplicate env var keys

Impact

Area Result
Performance Reduced LCP by 60% with SSR, code splitting & targeted caching
AI in Production OpenAI + Gemini for document automation at scale (LicitaWin)
Architecture Hexagonal + DDD + Event Sourcing + Saga + Outbox in production NestJS systems
Delivery Cut release cycles 30% with CI/CD & preview environments per PR
Enterprise Multi-tenant RBAC systems for national brands (Yamaha, Echo-Atende)
Open Source 4 PRs merged in projects with 130k+ aggregate stars (Prisma, Twenty, Cal.com, Unkey)

Tech Stack

Languages

TypeScript JavaScript Go Python Rust

Frameworks & Runtime

Node.js NestJS Next.js React Fastify FastAPI Effect-TS

Data & Messaging

PostgreSQL MongoDB Redis Prisma SQLite BullMQ AWS_SQS Socket.io

Infrastructure & DevOps

Docker AWS Kubernetes Terraform Nginx Linux

Architecture & Patterns

VSA Hexagonal DDD Event_Sourcing Saga Outbox Temporal

Observability

Datadog OpenTelemetry Grafana_Loki Winston Pino


3D Contributions


Writing

  • 📖 The Whole and the Part — Holonomic Software Architecture (EN, 62 chapters, in progress)
  • 🦀 Ferro e Espírito — Rust em pt-BR (62 capítulos, 28k+ linhas)
  • ✍️ Articles on holonomic systems, Effect-TS in production, hybrid search with RRF — coming to dev.to

Let's connect

Gmail LinkedIn


Code is poetry. Performance is art.


Pinned Loading

  1. micro-frontend-nextjs micro-frontend-nextjs Public

    Micro frontend architecture with Next.js, Module Federation, OpenTelemetry, and comprehensive testing

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  2. pet-dex-backend pet-dex-backend Public archive

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  3. opensource-guide opensource-guide Public

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  4. the-whole-and-the-part the-whole-and-the-part Public

    An open-source book on holonomic software architecture — Arthur Koestler's philosophy meets distributed systems. 62 chapters, 15,000+ lines.

    4