Simera Professional Key (SPK)

Mario C

El Salvador

Technical Lead & Senior Full-Stack Developer

$ 3,200/month

9 yrs exp

Senior Full-Stack Developer and Tech Lead with 6+ years of professional experience, specialized in the design and architecture of highly complex digital ecosystems. Expert in the Laravel and Flutter ecosystem, with strong proficiency in creating multi-tenant SaaS platforms, management dashboards, and integrating RESTful APIs for web and mobile applications. I excel at leading development teams under Agile methodologies (Scrum) and delivering End-to-End corporate solutions from ERP and logistics …

Skills

  • Bootstrap
  • CSS
  • CSS3
  • Docker
  • HTML
  • HTML5
  • Java
  • JavaScript
  • Jira
  • MongoDB
  • MySQL
  • PHP
  • PostgreSQL
  • React
  • SQLite
  • Vue.js
  • C#
  • Dart
  • Flutter
  • JWT
  • Laravel
  • Livewire
  • ReactJS
  • Software Engineer
  • Tailwind
  • Trello
  • Java.
  • TailwindCss
  • GitHub Actions
  • Java, SpringBoot
  • MSQL
  • Software Engineering
  • Inertia Js
  • Boostrap
  • Agile Scrum

Mario C

El Salvador

Technical Lead & Senior Full-Stack Developer

$ 3,200 /month

Part Time: $ 470/month

9 yrs exp

Intro Video

Senior Full-Stack Developer and Tech Lead with 6+ years of professional experience, specialized in the design and architecture of highly complex digital ecosystems. Expert in the Laravel and Flutter ecosystem, with strong proficiency in creating multi-tenant SaaS platforms, management dashboards, and integrating RESTful APIs for web and mobile applications. I excel at leading development teams under Agile methodologies (Scrum) and delivering End-to-End corporate solutions from ERP and logistics …

Skills

  • Bootstrap
  • CSS
  • CSS3
  • Docker
  • HTML
  • HTML5
  • Java
  • JavaScript
  • Jira
  • MongoDB
  • MySQL
  • PHP
  • PostgreSQL
  • React
  • SQLite
  • Vue.js
  • C#
  • Dart
  • Flutter
  • JWT
  • Laravel
  • Livewire
  • ReactJS
  • Software Engineer
  • Tailwind
  • Trello
  • Java.
  • TailwindCss
  • GitHub Actions
  • Java, SpringBoot
  • MSQL
  • Software Engineering
  • Inertia Js
  • Boostrap
  • Agile Scrum

Technical Lead & Senior Full-Stack Developer

Mail Boxes Etc.
October 2025 - present

Led the architecture and development of an End-to-End logistics ecosystem for courier franchises. Developed a SaaS administrative panel in Laravel with automatic customs tax calculation and physical inventory management. Built cross-platform mobile apps in Flutter with native barcode and QR scanning. Implemented AI (OCR) for automated data extraction from invoices. Integrated mission-critical APIs: DHL, Boxful, and CyberSource.

Senior Full-Stack Developer

Carnaval SA de SV
June 2024 - September 2025

Led a Scrum development team for the Integrated Production System, creating real-time analytical dashboards. Developed 3 mobile apps in Flutter for time tracking and production monitoring. Built a smart CRUD module generator using Laravel, React, and PrimeReact.

Full-Stack Developer

IT Project
October 2023 - May 2024

Developed applications using C# .NET Core 7, Java, Laravel, Angular, and Flutter. Managed backend, frontend, API development, SQL Server databases, and Docker containers.

Full-Stack Web and Mobile Developer

TWGroup
August 2021 - November 2023

Developed KPitan, a multitenant SaaS platform for POS and inventory. Integrated Stripe, Webpay, and Transbank. Developed mobile apps including PlanApp, HugeForest, and Endolap using Flutter with GPS and API connectivity.

Web Developer

Freelance
May 2018 - July 2021

Delivered solutions for clients in Chile, USA, and El Salvador including WoodChips, Replavinos, and AutoSummit. Utilized Laravel, Inertia, Livewire, Alpine JS, React JS, Vue, and Flutter.

PHP Developer

Onelink
June 2017 - April 2018

Maintenance and support of workflow automations with ProcessMaker and intranet requirements using OpenAtrium.

System Trainer

Garan S.A de S.V
March 2017 - June 2017

Conducted end-user training for registry systems.

Smart Scores

Communication
75
Role Fit
95
Adaptability
80
Problem-solving
90

Smart Skills

beta