Juan Diego C.

I build backend systems for products people actually use. For the past year, I've shipped production features for an HR SaaS platform using Node.js, NestJS, and TypeScript—including a complete recruitment module with AI-powered CV screening that automatically scores applicants and moves them through a hiring pipeline. My Philosophy: AI-Accelerated, Engineer-Driven I leverage an advanced AI-native workflow to automate repetitive coding and move twice as fast. However, I’m the one making the engineering calls. Clean architecture, strict code reviews, and robust testing are what keep a codebase maintainable six months down the road—and that part never gets handed off to a model. You get high-quality features shipped quickly, in a codebase that actually makes sense. What I Bring to Your Project: • Scalable Backend Architecture: REST APIs in NestJS structured with Clean Architecture, DDD, and SOLID principles so they hold up as your user base grows. • Database & Security: PostgreSQL data modeling with Prisma ORM, secured with JWT authentication and granular role-based access control (RBAC). • Real-Time & Reporting: Real-time features using WebSockets, and automated document/report generation (PDF, CSV, XLSX). • Production-Ready Quality: Comprehensive testing with Jest (unit, integration, and E2E) wrapped in a clean, PR-based Git workflow. • Practical AI Integrations: AI features that add real business value. Having built them in production, I’ll tell you honestly when an AI integration is worth the cost and when it isn't. Whether you need a brand-new API built from scratch, a complex feature added to an existing Node/NestJS app, or an AI integration you're currently weighing, let’s talk. Send me a message with what you're working on, and I'll give you a straight, no-nonsense answer on how we can execute it.