Welcome to my Portfolio, I'm... 
👋
Jean Carlos
Reyes
Application Development Engineer
Fullstack .NET Developer specializing in building high-quality applications with C#, React, and Node.js. Currently engineering solutions at Banco de Reservas and founder of FusionCore Apps.
Stack:.NETSQL ServerAzureReactReact NativeExpoNode.js
Santo Domingo, DRAbout Me
Fullstack .NET Developer
I'm a passionate software developer with 4+ years of experience building and maintaining web applications using clean code, clean architecture, and SOLID principles.
I specialize in creating seamless integrations between systems and services, ensuring reliable data flow and optimal performance across platforms. From enterprise banking systems to mobile apps, I deliver solutions that drive business success.
4+ Years Experience
59 Public Repos
12 Certifications
Founder @ FusionCore Apps
Experience.
Sept 2024 - Present
Application Development Engineer
Banco de Reservas · Santo Domingo, Dominican Republic
Engineering and maintaining administrative web applications for the largest bank in the Dominican Republic.
- Migrated and developed web portals using Umbraco CMS
- Built and maintained REST, SOAP and WCF services for internal integrations
- Developed .NET Workers and background jobs for scheduled processing
- Implemented and modernized Next.js platforms and React UIs
- Designed and optimized SQL Server databases (stored procedures, functions, triggers, complex queries)
- Resolved bugs across .NET Framework and .NET Core enterprise systems
.NETC#Next.jsSQL ServerUmbracoAzure
Mar 2022 - Present
Full-stack Developer
FusionCore Apps (Freelance) · Remote
Independent fullstack development and founder of FusionCore Apps, delivering custom software solutions.
- Built custom web and mobile applications for clients
- Founder of FusionCore Apps - delivering software solutions
ReactNext.jsNode.js.NETFlutterReact Native
Oct 2023 - Sept 2024
Software System Analyst
Direccion General de Migracion · Santo Domingo, Dominican Republic
Modernized legacy systems and built new microservices for the national immigration authority.
- Modernized MVC application, migrating to Blazor on .NET 8
- Maintained and enhanced a React application
- Developed new endpoints for a microservices-based API
Blazor.NET 8ReactMicroservicesNext.js
Nov 2022 - Mar 2023
IT Internship
CCS Holding Group · Santo Domingo, Dominican Republic
Provided IT support and developed reporting solutions for the hospitality group.
- Designed sales reports using Crystal Reports with SQL Anywhere
- Deployed and configured Pixel POS software on terminals
Crystal ReportsSQL AnywherePixel POS
Education.
Pontificia Universidad Catolica Madre y Maestra (PUCMM)
Bachelor's in Computer Science Engineering
2024 – 2027
Leading private university in the Dominican Republic.
Instituto Tecnologico de las Americas (ITLA)
Associate in Software Development
2021 – 2023
Higher Institute of Technology focused on software careers.
Colegio Tecnico La Redencion
Technical High School Diploma in Computer Science
2015 – 2020
Technical high school specializing in IT.
Projects.
Clean Architecture
A pragmatic, production-ready Clean Architecture template for .NET applications following SOLID principles and best practices.
C#.NETClean ArchitectureSOLID
Togetherly
A full-stack social application with a Flutter mobile frontend and a Node.js/TypeScript backend using Clean Architecture and TypeORM.
FlutterNode.jsTypeScriptExpressTypeORM
DR Real Estate
A real estate marketplace for the Dominican Republic where agents publish properties and customers find their dream homes. Built with .NET 6 and Onion Architecture.
.NET 6C#Onion ArchitectureIdentitySQL Server
Node.js Clean Architecture
A starter template for building REST APIs with Node.js, Express, and TypeScript using Clean Architecture principles and TypeORM.
Node.jsExpressTypeScriptTypeORMMySQL
Blazor Turnstile Captcha
An open-source Blazor component that integrates Cloudflare Turnstile captcha for bot protection in Blazor applications.
C#BlazorCloudflare Turnstile
Tech Stack.
C# / .NETbackend
ASP.NET Corebackend
Node.jsbackend
Expressbackend
Reactfrontend
Next.jsfrontend
Blazorfrontend
React Nativemobile
Expomobile
Fluttermobile
Azurecloud
SQL Serverdatabase
MySQLdatabase
REST APIsintegration
Microservicesintegration
Clean Architecturearchitecture
DDDarchitecture
SOLIDarchitecture
Dockertools
Gittools
Scrumtools
Claudetools
ChatGPT (Codex)tools
GitHub Copilottools
Certifications.
AZ-900: Microsoft Azure Fundamentals Exam Prep
Udemy
Microsoft Azure for .NET Developers
Udemy
Design Patterns in C# Made Simple
Udemy
Claude Code - The Practical Guide
Udemy
English Immersion Program
MESCyT
B2 English Certificate
EF Standard Test
React Fundamentals
Udemy
Scrum Fundamentals Certified (SFC)
Certiprof
JavaScript (Basic)
HackerRank
SQL (Intermediate)
HackerRank
SQL (Basic)
HackerRank
Problem Solving (Basic)
HackerRank
Get in Touch.
Have a project in mind or want to collaborate? Feel free to reach out!