I build local-first Windows software and developer tools for environments where reliability matters more than permanent connectivity.

Based in Brazil, I work across product delivery, offline-capable desktop systems, and focused engineering tools. I prefer explicit contracts and verifiable behavior over broad claims: what works offline, what fails safely, what automation has proved, and what still needs human validation should all be visible.

• Local operation is the baseline. Network services may extend a workflow, but should not become an accidental startup dependency.
• Failure must be legible. Validation, recovery, and fallback behavior are explicit rather than silently masking damaged state.
• Evidence travels with a release. Tests, cross-platform CI, deterministic manifests, and provenance are connected to the artifact they support.
• Public and private boundaries are intentional. Product outcomes can be explained without publishing source code, operational data, credentials, or undisclosed plans.
• Human gates remain human. Automated checks are reported separately from visual, physical-device, or operational acceptance.

I am refining local-first product delivery on Windows and publishing small tools whose guarantees can be inspected, tested, and reused independently.

• Product context: ClubAL product site
• Delivery evidence: ClubAL reliability project · Open engineering project
• Open-source questions: use the relevant repository's issue tracker.
• Security reports: follow the private reporting path documented in each repository's SECURITY.md.