SYS_ONLINE // Hello, my name is
Hector Rosario
// Backend developer with 9+ years of experience in .NET and cloud technologies (Azure, AWS), focused on scalable solutions, performance optimization, and process automation.
01. About Me
> Who am I?
Experienced backend developer with over seven years working with .NET and cloud technologies such as Azure and AWS. Passionate about designing scalable solutions and optimizing system performance to enhance efficiency and maintainability. Proven track record collaborating in fast-paced environments, leading projects, and automating processes. Seeking to tackle complex challenges and deliver innovative value-driven solutions.
LOCATION
Santo Domingo, Dominican Republic
EDUCATION
Technical Degree in Application Design and Development
EXPERIENCE
9+ years in .NET development
03. Experience & Education
[Work Experience]
@ Dirección General de Aduanas
Senior Application Development Analyst
- > Led the development of an internal applications portal, increasing team productivity by 35% and optimizing the management of key tools
- > Improved database performance, reducing response times from 15s to 1s through SQL query optimization
- > Implemented CI/CD with Azure DevOps, automating deployments and enhancing system stability
@ Ensitech
Full Stack Developer
- > Implemented a scalable notification module, integrating SendGrid, C3ntro, WhatsApp API, and SignalR, enhancing communication within the platform
- > Optimized the system architecture, reducing development time by 40% and enabling integration across different areas
- > Worked with Azure Functions and Azure Service Bus, ensuring a more flexible and scalable cloud architecture
@ Dirección General de Aduanas
Junior Application Development Analyst
- > Developed an internal application for request management, reducing approval times by 50% and improving access to key information
- > Automated workflow processes, optimizing operational load and task execution efficiency
- > Collaborated with different teams to integrate software solutions and ensure system interoperability
@ Excellent Integrity Solutions
Web Developer
- > Enhanced the performance of the PagaTodo platform, reducing loading times by 30% through system structure improvements
- > Developed and integrated enhancements in payment gateways and authentication, increasing system security and reliability
[Education]
INFOTEP
Technical Degree in Application Design and Development
This program gave me a strong foundation in software development principles and programming practices, and it set the stage for my hands-on experience in the industry.
02. My Skills
Backend Development
- C#
- .NET Core
- ASP.NET Web API
- Entity Framework
- SQL Server
- REST API Design
Cloud & DevOps
- Azure
- Docker
- CI/CD
- Git
Architecture
- Microservices
- Domain-Driven Design
- Clean Architecture
- Event-Driven Architecture
Frontend
- HTML5
- CSS3
- JavaScript
- Vue.js
04. Featured Projects
Notify Hub
Backend microservice for sending notifications across Push, Email, SMS, and WhatsApp channels. Features real-time delivery with SignalR.
Expense Tracker
A command-line application built with .NET 9 and Cocona to manage personal expenses. It supports categorization, CSV export, budget tracking, and local JSON persistence.
