Welcome!

I'm Joiner Davila,

Backend Developer

Building scalable APIs and high-performance backend systems


joiner

About Me

Hi, I'm Joiner Davila

Backend Developer

Backend Developer with 3 years of experience building scalable APIs and high-performance systems in Laravel and PHP. Specialized in REST API design, SQL optimization, asynchronous queue processing, and clean architecture patterns. Self-taught since a young age - curiosity is my main driver. I don't sit still: if there's something I don't know, I go find it. Reduced a critical module's response time from 15s to under 1s and built report pipelines processing 5,000+ records per file.

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Core Backend Expertise

Scalable API Engineering


REST APIs with auth, validation, and versioning. Impact: improved a critical module from 15s to under 1s response time.

Maintainable Architecture


Service-repository pattern, SOLID principles, and clean architecture. Built for testability, long-term scaling, and faster delivery cycles.

Performance and Data Optimization


Query optimization, indexing, caching, and asynchronous queue processing. Impact: reduced N+1 from ~90 queries to 1 in production flows.

SKILLS

Languages

PHP, JavaScript, TypeScript

Frameworks

Laravel, Angular

Backend

RESTful APIs, JWT Authentication, SOLID Principles, Clean Architecture

Databases

MySQL (query optimization, indexing)

Performance

Caching, Queues, async processing

Testing

PHPUnit, unit testing, feature testing

DevOps

Docker, Git, GitHub Actions (CI/CD)

Frontend (basic)

Angular, Ionic

MY PROYECTS

Parking Management System Select Repository

Parking Management System

Stack: Laravel and MySQL

Full-stack parking management system including vehicle entry/exit control, payments, admin dashboard, and PDF receipt generation. Resolved N+1 query issues reducing database calls from ~90 to 1. Designed with clean architecture and service-based backend structure.

Mpeercol - Corporate Web Platform View on GitHub

Impeercol - Corporate Web Platform

Stack: Laravel and MySQL

Corporate web system with public-facing site and admin panel for managing products, projects, and company content. Includes authentication, file/image management, and full CRUD operations with relational database logic.

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