SICRED — Mexico · Remote
Full-Stack Developer · Freelance
- Developed a microservices platform (NestJS + Fastify + Prisma) for credit-agent management and operations, under a Hexagonal + DDD + Clean architecture.
- Built the mobile app (React Native + Expo, TypeScript) and the web frontend (React + RSuite + Tailwind) that consume the microservices.
- Built a legal-document comparison platform with an in-house OCR microservice in Python (FastAPI + PyMuPDF + Tesseract) that digitizes scanned PDFs, and a self-hosted AI engine (Ollama) that contrasts documents and summarizes case files in a chat.
- Automated CI/CD with GitHub Actions (QA and production environments): image build and push with Docker Buildx, semantic versioning and secret scanning (gitleaks), with container orchestration in Docker Compose.
- Hardened security with Cloudflare (WAF, rate limiting and Turnstile anti-bot) and protected the APIs at application level with rate limiting (Fastify) and security headers (Helmet).