Software Engineer from 🇪🇨 Ecuador. I build backend architectures and FinTech products — with a hard rule: no any in TypeScript. Ever.
- 🛠️ Developer & Maintainer at Good Systems SF — e-invoicing platform for Ecuador
- 💼 Previously Full Stack Engineer at Innovation & Technology Services — Utransfer, a global remittance platform with KYC via Trulioo
- 🏗️ Backend architecture with NestJS, CQRS, DDD, and event-driven microservices (Kafka)
- 📲 Mobile with React Native + Expo following Clean Architecture
- 💳 FinTech integrations: built a PayPal payment microservice from scratch, plus Trulioo (KYC) and LoopPay
- 🔐 Security-focused: JWT, access/refresh tokens, biometric auth, rate limiting, single-session with Redis
- Cut API response time 700ms → 300ms and queries per request 5 → 1 through performance profiling
- Detected and neutralized a production attack (up to 25 req/s to a nonexistent endpoint) down to 0
- Reduced deployment time 8 min → 1–2 min with GitLab CI/CD pipelines
- Found 4 critical security vulnerabilities through internal QA and led the resulting security refactor
- Cleaned up legacy code and endpoints across 11 modules; redesigned 17 screens of a production mobile app
Backend
Mobile & Web
Infrastructure & Databases
Testing
