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adiazjohnson213/README.md

Arthur Diaz — Senior .NET Backend Developer

8+ years building backend systems with C# / .NET — APIs, cloud integrations, and enterprise-grade services.

📍 Niagara Falls, Ontario, Canada  |  🌐 Open to remote roles  |  LinkedIn

About

I'm a backend-focused engineer with 8+ years of experience designing and delivering production systems in C# / .NET. My work spans enterprise migrations, REST API design, cloud-native implementations on Azure, and payment integrations.

I care about systems that are maintainable under pressure — clear contracts, predictable failure modes, and code that other engineers can reason about without a guide.

Currently deepening my focus on backend architecture patterns and Azure AI integration, building toward senior-level fluency in both.

Tech Stack

Core

  • C#, .NET, ASP.NET Core
  • REST API design, Entity Framework Core, Dapper
  • SQL Server, relational modeling, query optimization
  • Async/await, background processing, integration services

Cloud & AI

  • Microsoft Azure — App Service, Functions, Durable Functions, Blob Storage
  • Azure AI Services — Language, Vision, Document Intelligence, AI Search
  • Azure OpenAI, Azure AI Foundry

Practices

  • Clean Architecture, layered architecture
  • Authentication & authorization — JWT, OAuth
  • Unit & integration testing
  • Observability — structured logging, diagnostics, Application Insights
  • Agile / Scrum, SonarQube, CI/CD basics

Featured Projects

CertMentor API (In Development)

AI-powered certification preparation backend — adaptive exams, session tracking, and personalized study plans.

A backend API that generates exam-style questions using Azure AI, tracks study sessions over time, identifies knowledge gaps, and produces adaptive study plans based on performance history. Built with Clean Architecture, SQL Server for relational data, and a focus on real observability.

Stack: .NET, ASP.NET Core, EF Core, SQL Server, Azure OpenAI, Azure AI Foundry
Status: 🚧 In development — repository coming soon

Certifications

Certification Issuer Year
Azure AI Engineer Associate (AI-102) Microsoft 2026
Azure Fundamentals (AZ-900) Microsoft 2025

Education

  • Diploma in Software Architecture — Universidad de La Sabana, 2023
  • Bachelor's in Systems Engineering — Universidad Tecnológica de Bolívar, 2013

Contact

Popular repositories Loading

  1. PruebaTecnicaMASGlogal PruebaTecnicaMASGlogal Public

    Prueba técnica

    C#

  2. adiazjohnson213 adiazjohnson213 Public

  3. reasoning-agents-dotnet reasoning-agents-dotnet Public

    Reasoning Agents track — .NET implementation (local + Azure AI Foundry Agent Service)

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  4. certmentor-api certmentor-api Public

    AI-powered certification preparation API — adaptive exam generation, skill gap tracking, and personalized study plans using Azure OpenAI and Microsoft Learn content.

    C#