Hi! I'm Sebastián Ramírez Pastore

A full stack web and mobile developer, with more than eight years of experience.

About me

Explore this section to gain insights into who I am, my professional background, my skills and the different technologies I worked with.

Discover more about me!
Full Stack Web and Mobile Developer with +8 years of experience. Mainly working with Laravel, PHP, Vue.js, MySQL and Flutter. Passionate about learning, teaching, and contributing. My expertise spans much of the software development cycle, such as requirement analysis, architecture design, development, testing, launching to production and maintenance. Across my career I also had the opportunity to be involved in projects that used Symfony, ASP.NET CORE, Android with Java, MERN Stack and Django.
Most used technologies
PHPLaravelVue JSJavaScriptMySQLRedisDartFlutterInertiaNginx
Others
SymfonyIonic with Angular JSTypeScriptNode.jsReactMongoDBASP.NET CorePostgreSQLSQL ServerPythonDjango

Projects

Here you will find some of the projects I was involved in, in most of the cases as lead developer.

Some images are purposely blurred for data privacy reasons

Online Payment Platform

Metrepay

Metrepay is a Paraguayan Fintech company focused on online payments. In this project, we worked on integrating the platform with various payment methods, some local like Bancard and Dinelco, and others international such as Paypal and Cybersource (a VISA solution). Since the platform includes the possibility of recurring payments, we have a robust system of "customizable payment attempts" distributed throughout the day. This payment attempt system is queued with asynchronous tasks. Additionally, there is a Webhooks system and integration with the system via API. All these tasks together resulted in a workload of 300,000 daily operations, including payments, notifications, emails, etc.

SymfonyMySQLRedisDockerNginx
Project

Building Managment System

La Administradora

In this project, the business model of a condominium manager was implemented. The system manages information for more than 50 condominiums, including their respective owners and tenants. The entire administrative system for expense recording, billing, communication, event management, human resources, accounting, etc., is included in the system, considering the different variations that may occur for each condominium. The project began in 2021 and continued to evolve until 2024.

LaravelVue JSInertiaFlutterMySQLRedisNginx
Project

Fuel Wholesale Ordering System

Petromax

Petromax is a Paraguayan fuel sales company. This system allows wholesale buyers to place their orders and track them until delivery. In the middle of this, the system connects via API with a SAP system, with which it synchronizes certain information related to logistics, finances, order status and permits.

LaravelVue JSInertiaMySQLRedisNginx
Project

Mall Mobile App

Paseo La Galería

It's a mobile application for El Paseo La Galería, the most important shopping mall in Paraguay. Through it, you can access stores, promotions, and events. Additionally, users can upload photos of receipts from purchases made at the mall to redeem them for coupons for draws. There is an electronic coupon system that allows the purchase of vouchers and their subsequent redemption in stores. It's an application downloaded and used by tens of thousands of people.

IonicAngular JSLaravelSQL ServerRedisNginx
Project

Food delivery App

GU

It is a web system and mobile application focused on food delivery orders. It includes a web-based control system for restaurants and branches, with specific access for each branch, a logistics system for delivery, and the mobile application for the end user.

MongoDBExpressReactnode.jsFlutterMginx
Project

Mobile App

Football Game

It is a mobile application where each user can try to guess the outcome of their favorite football team's matches, and in some way compete against other users who also tried to guess the outcome of the same match. It has an API connection to a service that provides real-time information on different matches. It is practically integrated into all leagues around the world. All of this is achieved through many asynchronous tasks that run with Horizon.

FlutterLaravelVue JSInertiaMySQLRedisNginx
Project

Vehicle Alarm Monitoring and Ticketing System

Skycop

It is a system that receives alarms from various electronic devices installed in vehicles. Some of these alarms report repeated signals at a significant rate, requiring filtering to occur. However, this filtering may not necessarily happen in parallel, leading to specific loads at certain times. This challenge was addressed by implementing caching, parallelizing tasks with criteria to avoid duplications, and improving database performance. Finally, these filtered alarms are passed to a ticketing system, which has also been developed.

LaravelVueMySQLRedisNginx
Project

Wholesale Marketing Control System

Poscontrol

It's a web and mobile platform focused on measuring the performance of marketing actions at point of sale. Each store can configure templates to measure specific actions, which are then recorded from the mobile application, and finally evaluated collectively according to configured criteria.

ASP.NET CoreAndroid with JavaMySQLNginx
Project