Backend Developer with 5+ years building secure, scalable apps using Node.js & Express.js. I specialize in REST APIs, JWT/OAuth authentication, and optimizing PostgreSQL/MySQL databases. Experienced deploying on AWS (EC2, S3, RDS, Lambda). I've built fintech systems including regulatory reporting (XBRL, Pillar 1-3), where precision and security are critical. Also comfortable with React/Next.js for full-stack needs. AWS Certified Cloud Practitioner, currently pursuing AWS Developer Associate. Clean code, clear communication, realistic timelines. Let's build something solid, message me anytime!... Lee más