Backend Engineer | SaaS Builder | API & Data Systems Specialist
🇦🇷 Remote from Argentina
Building scalable, secure, and production-ready systems
I'm a Backend Engineer specializing in designing and building enterprise-grade, production-ready systems. I focus on creating scalable architectures that solve real business problems while maintaining high standards of security, reliability, and maintainability.
Core Expertise:
- 🏗️ System Architecture — Clean, scalable backend designs
- 🔐 Security — Authentication, authorization, and secure API design
- 💳 SaaS Platforms — Subscription systems, billing, and multi-tenancy
- 📊 Data Systems — Analytics pipelines and data-driven integrations
- 🚀 Delivery & Infrastructure — CI/CD, containerization, and cloud deployments
I transform complex technical challenges into reliable, maintainable solutions that stand the test of time.
Founder and lead engineer of a production-grade SaaS platform designed for advanced analytics and forecasting in energy and infrastructure environments.
Platform Characteristics:
- Architecture: Multi-tenant SaaS with isolated data per tenant
- Security: Role-based access control (RBAC) & secure authentication flows
- Data Processing: Analytics pipelines and forecasting models
- Monetization: Subscription-based (Starter / Pro / Enterprise tiers)
- Internationalization: Multi-language support (EN / ES / FR)
- Infrastructure: Production deployment with monitoring & alerting
- API Design: RESTful, API-first architecture
Technical details and demos available upon request for serious collaborations.
- 🔑 JWT & Token-based authentication
- 🛡️ Role-Based Access Control (RBAC)
- 🔔 Webhook handling & event-driven architectures
- 💰 Stripe subscriptions & billing systems
- 📡 RESTful & async API design
Enterprise-grade subscription and billing system integrated into a production SaaS product.
Implementation Highlights:
- Stripe Checkout integration with custom flow
- Webhook handling (
checkout.session.completed,invoice.paid,customer.subscription.*) - Automated renewals and plan upgrades/downgrades
- Subscription lifecycle management
- Zero manual intervention required
Full demo and technical documentation available privately upon request.
Production-ready FastAPI + PostgreSQL backend featuring intelligent Q&A capabilities.
Key Features:
- Intelligent conversation handling
- Interaction history tracking
- OpenAPI / Swagger documentation
- Comprehensive error handling
- Production deployment with monitoring
Enterprise-style REST API built with Spring Boot & Laravel.
Architecture:
- JWT-based authentication
- Role-Based Access Control (RBAC)
- Secure CRUD operations
- Clean architecture with service layer separation
Modern Next.js application with enterprise-level optimizations.
Features:
- Internationalization (i18n)
- Dark / light theme support
- Responsive design
- Performance optimization & SEO
- ✅ PR #237 — Clarified
register()andboot()methods - Enhanced plugin lifecycle documentation
- Added structured examples and common pitfalls
- Successfully merged into official documentation
🔍 Related Issue: #228
Services:
- Backend & API development
- SaaS architecture consulting
- Stripe subscriptions & billing systems
- Secure authentication & authorization flows
- System design & technical consulting
Platforms:
Universidad Tecnológica Nacional (UTN)
Technical University Degree in Programming
Since 2023
"I have done a few projects with Emilio, and I am always pleased with the results. What I appreciate most is his transparency, attention to detail, and the way he documents his work. I highly recommend his services."
— ⭐️ sunshine0109 (Repeat Client, USA)
Building systems that scale, stay secure, and deliver real value.