ETFreelancer profile translated to English.
Back to original languageAbout Elias
I am a full stack developer with over 3 years of experience in creating enterprise systems from scratch with React, Node.js (Express/NestJS), and MySQL.
I specialize in internal systems, admin panels, dashboards, and REST APIs for companies that need reliable, scalable, and well-structured solutions.
My specialty:
**• Design and build complete systems from scratch
• Develop backend APIs and business logic with Node.js and NestJS
• Create admin dashboards and user interfaces with React
• Implement authentication, roles, and permissions
• Design and optimize relational databases (MySQL)
• Automate processes to reduce manual work and improve efficiency**
I have worked with tourism and hospitality companies, developing accounting systems, booking platforms, CRM-like systems, QR code-based solutions, and e-commerce functionalities.
I focus on clean architecture, clear communication, and punctual deliveries. My goal is not just to write code, but to understand business needs and translate them into robust, maintainable software.
If you are looking for a developer who can take ownership of a system and deliver real value, don't hesitate to contact me.
Spanish
Native or bilingual
English
Conversational
Can work on-site
Buenos Aires (up to 50km)
Experience
- Pedraza Viajes y TurismoMobile App for Bookings and Management.TRAVEL AND TOURISMSeptember 2022 - Today (3 years and 9 months)Buenos Aires, Argentina
I designed and developed a mobile application for a tourism company that allows users to explore, book, and manage travel products.
The app includesuser authentication, bookings, payments, invoicing, promotions, discount coupons, and push notifications.I integratedPayWayas a payment gateway and worked with a hybrid backend that combines legacy PHP services with Node.js.I also created a web admin panel to manage notifications and app content.The app is published onApp StoreandGoogle Playand is kept up-to-date with SDK updates for the latest iOS versions. - Magna HotelesLanding Page - Admin Panel with Booking API IntegrationHOSPITALITYMarch 2024 - Today (2 years and 3 months)Buenos Aires, Argentina
Main website for a hotel chain using React, connected to a custom Express API for hotel management (hotels, content, services, products, and multimedia).
Anadmin panel with authentication was developed to manage each hotel's information and upload images and services.TheTodoAlojamiento APIwas integrated for availability search and the booking process,using its payment/booking gateway.A clean user experience, maintainable architecture, and reliable integration with third-party APIs were prioritized. - SquadPetsPet Identification and QR-Based E-commerce PlatformE-COMMERCEFebruary 2024 - Today (2 years and 4 months)Buenos Aires, Argentina
I designed and built a complete platform to help find lost pets, facilitating instant contact between finders and their owners.
I developed a full CRM with user accounts, pet profiles, and QR-based identification. Upon scanning a QR code, the system captureslocationdata andsends automatic WhatsApp notificationsto the owner.I developed a complete e-commerce system for selling QR collars, including a shopping cart, checkout, payments, and shipping cost calculation.The platform is built with a microservices architecture, is actively maintained, and is running in production.
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Education
- Professional IT Technician.Jose Hernandez.2018Aplicaciones Informáticas, Ingeniería Informática.