Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m a Backend Developer with over 6 years of experience building high-performance web applications and APIs, specializing in the Laravel ecosystem. My work spans server automation, secure payment integrations with Laravel Cashier (Stripe), and reactive dashboards using Livewire and Filament. I develop full-stack solutions with Inertia.js and Vue.js, including QR code generators and scanners for event invitations, and scalable API architectures with Laravel Passport for OAuth2. I’ve built real-time apps and game backends with NestJS, Socket.IO, and Redis, delivering robust systems for data-intensive and interactive use cases.…I’m a Backend Developer with over 6 years of experience building high-performance web applications and APIs, specializing in the Laravel ecosystem. My work spans server automation, secure payment integrations with Laravel Cashier (Stripe), and reactive dashboards using Livewire and Filament. I develop full-stack solutions with Inertia.js and Vue.js, including QR code generators and scanners for event invitations, and scalable API architectures with Laravel Passport for OAuth2. I’ve built real-time apps and game backends with NestJS, Socket.IO, and Redis, delivering robust systems for data-intensive and interactive use cases.

Javier Emmanuel Mercedes

Full Stack Developer, Back-End Developer, Web Developer, +2





I’m a Backend Developer with over 6 years of experience building high-performance web applications and APIs, specializing in the Laravel ecosystem. My work spans server automation, secure payment integrations with Laravel Cashier (Stripe), and reactive dashboards using Livewire and Filament. I develop full-stack solutions with Inertia.js and Vue.js, including QR code generators and scanners for event invitations, and scalable API architectures with Laravel Passport for OAuth2. I’ve built real-time apps and game backends with NestJS, Socket.IO, and Redis, delivering robust systems for data-intensive and interactive use cases.…I’m a Backend Developer with over 6 years of experience building high-performance web applications and APIs, specializing in the Laravel ecosystem. My work spans server automation, secure payment integrations with Laravel Cashier (Stripe), and reactive dashboards using Livewire and Filament. I develop full-stack solutions with Inertia.js and Vue.js, including QR code generators and scanners for event invitations, and scalable API architectures with Laravel Passport for OAuth2. I’ve built real-time apps and game backends with NestJS, Socket.IO, and Redis, delivering robust systems for data-intensive and interactive use cases.

Available to hire

I’m a Backend Developer with over 6 years of experience building high-performance web applications and APIs, specializing in the Laravel ecosystem. My work spans server automation, secure payment integrations with Laravel Cashier (Stripe), and reactive dashboards using Livewire and Filament.

I develop full-stack solutions with Inertia.js and Vue.js, including QR code generators and scanners for event invitations, and scalable API architectures with Laravel Passport for OAuth2. I’ve built real-time apps and game backends with NestJS, Socket.IO, and Redis, delivering robust systems for data-intensive and interactive use cases.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Spanish; Castilian

Fluent

Work Experience

Backend Developer at Elaniin

March 1, 2025 - September 22, 2025

Led backend development using Filament PHP for admin panels (Livewire, custom components); helped architect backend infrastructure for a NFT game 'Knights of the Ether' using NestJS and Socket.IO for multi-client real-time validation of assets; implemented Firebase as a complete backend (Storage, Cloud Functions, Authentication, Messaging, Firestore); deployed most projects via Laravel Forge on AWS or Digital Ocean; used CapRover for Docker-based deployments; built API-only backends for mobile apps and admin dashboards with Laravel Passport (OAuth2/JWT); created MCP servers that connect to AI editors to speed up development tasks.

Backend Engineer Contractor at Chicks Gold Group

January 31, 2025 - September 22, 2025

Migrating old PHP 5 sites to Aurelia and connecting them to an internal API, refactoring and ensuring code security and stability throughout the process.

PHP Developer at GRUPO VOPM

June 1, 2021 - September 22, 2025

Created web applications using PHP, MySQL, and jQuery. Used Pentaho Data Integration and Visual Studio Integration Services to query and transform data from various sources into data used for credit analytics.

Software Senior Lead Software Engineer

June 1, 2020 - September 22, 2025

Maintained and expanded a Hotspot Management system that manages WiFi access (RADIUS) and provides a custom landing page with Google/Facebook login and forms; used data for heat maps, marketing analytics, and user segmentation in a customer admin panel. Also contributed to event sponsorships (Mercado Expo 2019 at UNIBE) by delivering a Vue.js-powered page for ticket purchases, QR code generation, and access validation.

Software Developer

October 1, 2019 - September 22, 2025

Developed backend components for the hotspot system and supported integration tasks, leveraging PHP, Laravel, and related technologies.

Backend Developer at Elaniin

March 1, 2025 - September 22, 2025

Led backend development for multiple projects using Filament PHP and Laravel Livewire; contributed to the architecture of the NFT game Knight's of the Ether, implementing NestJS and Socket.IO for real-time multi-client validation. Built Firebase-backed services (Storage, Authentication, Cloud Functions, Messaging, Firestore) and deployed APIs with Laravel Forge on AWS or Digital Ocean. Automated server configuration and deployments with CapRover and Docker. Implemented API-only backends for mobile apps and admin dashboards, with Laravel Passport for OAuth2/JWT, and explored MCP servers connecting to AI editors to accelerate development.

Backend Engineer (Contractor) at Chicks Gold Group

January 1, 2025 - September 22, 2025

migrated legacy PHP 5 sites to Aurelia, connected them to an internal API, and refactored code to improve security and stability.

PHP Developer at Grupo VOPM

June 1, 2021 - September 22, 2025

Built web applications using PHP, MySQL, and jQuery; used Pentaho Data Integration and Visual Studio Integration Services to query and transform data for credit analytics.

Senior Lead Software Engineer

June 1, 2020 - September 22, 2025

Maintained and expanded a hotspot management system integrating RADIUS, MySQL, and Redis; developed dashboards for heat maps and marketing analytics; supported event-related pages and QR code workflows; leveraged AWS services (RDS, S3) and CapRover for deployment.

Software Developer

October 1, 2019 - September 22, 2025

Contributed to hotspot management system maintenance and feature development prior to October 2019, including ticketing pages with Vue.js and QR code scanning/validation for events.