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16 followers · 5 following

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Achievements

Achievement: Galaxy BrainAchievement: Pull Sharkx4Achievement: Pair Extraordinairex3Achievement: YOLOAchievement: Quickdraw

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felipesauer/README.md
neofetch output for Felipe Sauer: Full Stack Developer, Brazil, TypeScript and PHP, bash on Linux. Backend Node.js, Laravel, REST APIs. Frontend React, Next.js, TailwindCSS. Database PostgreSQL, MySQL, Neo4j. Infra Docker, GitHub Actions, Cloudflare. Quality TypeScript strict, PHPStan max, tests.



Repos Followers Stars

Felipe Sauer · Full Stack Developer

Open to Full Stack opportunities. Let's talk on LinkedIn.

$ whoami

Hi! I'm a Full Stack Developer who ships libraries with zero production dependencies and identical APIs across PHP and TypeScript. I work end to end: data modeling, API, interface and whatever else it takes to keep a system running in production without surprises.

I like turning tedious, repetitive problems into tools other people can use. Strict typing, automated tests and max-level static analysis are not extras here, they are the default.

I write code by hand and use AI when it speeds things up. The tool changes, the judgment does not: architecture, modeling and review are still engineering work.

That balance became a project: mnema keeps a signed record of the decisions behind AI agent work.

$ ls ~/projects

▸ mnema

A signed, append-only record of the decisions behind AI agent work: the decision, the reasoning and who wrote it down, inside the repository where the work happens.

TypeScript Node.js npm

▸ monitor-sefaz

Open-source status page tracking 135 public services in real time, with multi-source consensus, uptime history and multi-channel alerts.

TypeScript React Cloudflare

Live site

▸ notagrafo

Pipeline that turns XML documents into a Neo4j graph: schema validation, queues, REST API and dashboard. Published to npm and as Docker images.

TypeScript Neo4j Docker

▸ safeaccess-identum

Brazilian document validation (CPF, CNPJ, CNH, CEP, CNS, PIS, RENAVAM, Mercosul plate) with an identical API in PHP and TypeScript.

PHP TypeScript

▸ safeaccess-inline

Safe access to nested data via dot notation across JSON, YAML, XML, INI, ENV and NDJSON, with security validation and immutable writes. In PHP and TypeScript.

PHP TypeScript

$ cat stack.txt

  • Back-end: Node.js, PHP 8.2+, Laravel, REST APIs
  • Front-end: React, Next.js, TypeScript, TailwindCSS
  • Data: PostgreSQL, MySQL, Neo4j
  • Infra: Docker, GitHub Actions, Cloudflare Workers, Linux
  • Quality: automated tests, TypeScript strict, PHPStan max level
  • AI: coding agents, automation of repetitive tasks, decision auditing

$ cat focus.txt

  • Publishing libraries with real parity between PHP and TypeScript
  • Making AI agent work auditable and reversible
  • Architecture and system design that survives production
  • Offline-first applications and edge computing
  • Writing code the next developer understands without asking me

$ gh profile --stats

GitHub stats: 10 public repositories, 38 stars, 16 followers, 1442 commits in the last year. Languages: TypeScript 86.1 percent, PHP 8.6 percent, JavaScript 3.7 percent, Python 1.1 percent

$ contact --list

LinkedIn GitHub Live project

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  1. monitor-sefaz monitor-sefaz Public

    A SEFAZ está fora do ar? Monitor open-source de disponibilidade dos webservices de NF-e, NFC-e, CT-e, MDF-e e DC-e nas 27 UFs — status ao vivo, histórico de uptime e alertas, sem certificado digital.

    TypeScript 10 3

  2. mnema mnema Public

    A signed, append-only record of the decisions behind AI-agent work — the decision, the reasoning, and who wrote it down, in the repository where the work happens.

    TypeScript 4

  3. safeaccess-inline safeaccess-inline Public

    Dual-language library for safe nested data access with dot notation in PHP & TypeScript — JSON, YAML, XML, INI, ENV, NDJSON with built-in security, immutable writes, and cross-language parity.

    TypeScript 3

  4. safeaccess-identum safeaccess-identum Public

    Validates Brazilian documents — CPF, CNPJ, CNH, CEP, CNS, PIS, IE (all 27 states), RENAVAM, Mercosul Plate, and Voter Title. PHP 8.2+ and TypeScript, identical API, zero production dependencies.

    TypeScript 3

  5. notagrafo notagrafo Public

    Processa e analisa NF-e v4.00 como um grafo no Neo4j — validação XSD, filas, API REST e dashboard. Bibliotecas no npm (@notagrafo/*) e imagens Docker.

    TypeScript 3