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$
USD
I will build rest graphql apis and custom workflow automation
Erick Romero
About this gig
Looking for a robust API or custom automation? I build secure, production-ready backend architectures using FastAPI, NestJS, and Docker. Whether you need a simple third-party integration or a complex AI-driven system, I deliver clean, highly scalable code.
️ What I Can Build For You:
- Custom REST & GraphQL APIs: Highly efficient backends built with TypeScript (NestJS) or Python (FastAPI).
- Business Automation: Seamlessly connect Stripe, WhatsApp, HubSpot, or any CRM via Webhooks and custom workflows.
- AI & Vector Databases: Smart RAG (Retrieval-Augmented Generation) agents utilizing LangChain and Supabase Vector.
- Web Scraping: Custom bots for automated data extraction, parsing, and monitoring.
Why Choose My Services?
- Dockerized Environments: I deliver every project fully containerized with Docker, ensuring it runs flawlessly on any server or cloud platform from day one.
- Interactive Documentation: Built-in Swagger/OpenAPI or GraphQL Playground interfaces for instant testing and seamless frontend integration.
- Clean Architecture: Type-safe code, strict data validation, and optimized SQL/NoSQL databases (PostgreSQL, MongoDB, etc.).
- AI-Ready Infrastructure: Systems natively designed to int
Get to know Erick Romero
Erick Romero
I will build REST or GraphQL APIs and automate your business workflows
- FromVenezuela
- Member sinceMay 2026
Languages
Spanish, English
Good day, I'm a Backend Architect specializing in high-performance REST/GraphQL APIs and workflow automation using FastAPI, NestJS, and Docker. I connect platforms (like Stripe, WhatsApp, CRMs) and build secure, database-driven systems with Supabase. I also develop smart AI agents (RAG) using LangChain. Every project I deliver is fully dockerized with active Swagger documentation for zero-friction deployment. Let's build a secure, automated, and scalable backend that powers your business growth. Contact me today!"
FAQ
Can you handle high-traffic and secure data?
Absolutely. I follow clean architecture principles and use asynchronous programming in FastAPI/NestJS to ensure high performance. I implement strict data validation, JWT authentication, and secure environment variable management to protect your business logic and user data.
What happens if I need to scale my system in the future?
I build "Future-Proof" backends. By using Docker and modular code (Clean Architecture), your system will be ready to scale vertically or horizontally. Adding new features, more users, or migrating to a different cloud provider will be seamless and cost-effective.
Do you provide support after the project is delivered?
Yes, I provide a support period to ensure everything runs smoothly in your production environment. My goal is a long-term professional relationship, so I’ll make sure you understand how to manage and monitor your new backend architecture.
