Open to opportunities

Caio Fábio

@caiofbio1

Principal Software Engineer at TraceDocuments, building a forensic-tracing SaaS with 590 endpoints and 2,700 automated tests.

Brazil

Message

What I'm looking for

I’m focused on Tech Lead, Principal Engineering, and Systems Architecture roles.

At TraceDocuments, I designed and implemented a distributed, multi-tenant B2B SaaS with 590 endpoints, forensic cryptography, and RAG-powered support. I also built an automated testing suite with approximately 2,700 tests and orchestrated 35 CI/CD pipelines.

At Nexdom Healthtech, I lead technical delivery for the Núcleo platform, including .NET APIs, real-time integrations, and security improvements. I also architected a fintech core that processed more than $750K with zero calculation errors, backed by automated tests.

Experience

Work history, roles, and key accomplishments

Current

Founder & Principal Architect

Current

TraceDocuments

Mar 2026 - Present (7 months)

Designed and implemented a distributed multi-tenant architecture in .NET 10 with 590 endpoints, 23 background workers, PostgreSQL, Redis, and strict tenant data isolation. Engineered forensic tracing with HMAC-SHA256 and Ed25519 signatures, and built a multi-platform monorepo with 6 clients.

.NET Clean Architecture PostgreSQL Redis HMAC Ed25519 Reed Solomon Codes Azure Key Vault Next.js React Native Avalonia Semantic Kernel Azure AI Foundry Playwright OWASP ZAP Azure DevOps Bicep

Current

Software Engineer (Senior Technical Reference)

Current

Nexdom Healthtech

Mar 2023 - Present (3 years 7 months)

Led end-to-end technical delivery across .NET/ASP.NET Core APIs, TypeScript web interfaces, and SQL Server databases. Optimized batch update routines and implemented real-time bidirectional sync with Elasticsearch, and spearheaded security vulnerability audits.

.NET ASP.NET Core TypeScript SQL Server NHibernate Elasticsearch SignalR Celcoin 2FA Application Security

Lead Full Stack & Mobile Engineer

Rolezando

Jun 2025 - Jul 2026 (1 year 1 month)

Mentored a team of 4 engineers across 1,000+ commits, enforcing Clean Architecture in .NET 9 with MySQL and Flutter. Structured automated delivery pipelines in Azure DevOps and engineered an offline-first queue for rapid QR code ticket scanning.

.NET Clean Architecture MySQL Flutter Azure DevOps CI CD Offline First QR Code KDS

Lead Architect & Full Stack Engineer

Investment Platform

Mar 2024 - Jan 2026 (1 year 10 months)

Architected and built the core platform processing over $750K+ across 276 active investors, guaranteeing strict transactional consistency. Developed automated batch motors for yield calculation and asset allocation, and implemented instant payment rails for Pix and USDT.

.NET Azure Functions SignalR Pix USDT Testing Automation Financial Systems