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Angel11R99/README.md

Angel Rodríguez Trejo — Software Engineer, Systems, APIs and Platforms

From domain logic and data modeling to reliable products in production.

Email Angel Explore Mony

Based in the Dominican Republic Available for remote work

About   •   Toolkit   •   Selected work   •   Contact

01 — About

Software Engineer — Systems, APIs & Platforms

I design and deliver reliable software products across backend, web, mobile, and desktop environments. My work covers the complete engineering lifecycle: domain modeling, API design, data architecture, application development, testing, automation, and production delivery.

Core stack: PHP, Laravel, SQL, Kotlin, TypeScript, Docker, and GitHub Actions.

Areas of expertise: API and platform engineering, data modeling, authentication and authorization, multi-tenancy, application architecture, automated testing, and CI/CD.

PHP and Laravel are central to my work, complemented by Kotlin and Jetpack Compose for Android, React Native and TypeScript for cross-platform applications, and JavaFX for desktop solutions. My experience includes job-search and real estate platforms, multi-tenant SaaS, e-commerce, personal finance, and management systems.

02 — Engineering toolkit

A pragmatic toolkit for designing, building, testing, and shipping maintainable products.

Languages

PHP Java Kotlin JavaScript TypeScript Python SQL Bash

Backend and APIs

Laravel REST APIs Authentication and RBAC

Web development

Livewire Twig React Fetch API and AJAX jQuery HTML5 CSS3 Sass / SCSS Tailwind CSS Bootstrap

Mobile and desktop

React Native Jetpack Compose JavaFX

Design and prototyping

Figma

Data and persistence

MySQL PostgreSQL Supabase MongoDB Redis SQLite Room

Architecture and patterns

Layered Architecture MVC MVVM Repository and DAO

Testing and code quality

PHPUnit Pest JUnit 5 PHPStan

DevOps and platforms

Docker GitHub Actions Linux Windows

Development tools

Composer Git GitHub Postman Visual Studio Code

03 — Engineering capabilities

  • Design and implementation of services, APIs, integrations, and domain workflows.
  • Data modeling, schema evolution, and integration with SQL and NoSQL databases.
  • Secure authentication, authorization, RBAC, tenant isolation, and permission models.
  • Web, Android, cross-platform, and desktop applications backed by production data.
  • Modernization of existing systems through clear boundaries and maintainable architecture.
  • Automated testing, static analysis, containerization, CI/CD, and deployment workflows.

04 — Selected work

Mony app icon Mony — Private, offline-first personal finance for Android.
Transactions, budgets, goals, statistics, exports, scanning, and 11 home-screen widgets. Financial data stays on the device.

Latest Mony version Mony downloads Mony stars Latest Mony commit

Built with: Kotlin · Jetpack Compose · Room · Hilt · Coroutines · Flow

05 — Let's build something useful

Have a product challenge, an API to design, or a system to modernize?
I am available for remote collaboration.

Send Angel an email

Profile views

Designed with intent. Engineered for clarity.

Animated code rain footer

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  1. Angel11R99 Angel11R99 Public

  2. Mony Mony Public

    Mony es una aplicación financiera móvil offline-first diseñada para gestionar finanzas personales sin depender de internet.

    Kotlin