.NET / Azure Backend API Developer

Job Title: .NET / Azure Backend API Developer

Location: Miami, Florida (Hybrid – Local Candidates Preferred)

Job Summary

STAFFXPERT LLC is seeking a .NET / Azure Backend API Developer on behalf of our client in Miami, Florida. This role involves designing and building scalable, secure, and high-performance backend services using modern .NET technologies and Microsoft Azure. The ideal candidate will have strong experience in API development, cloud architecture, and database optimization.

Key Responsibilities

• Design, develop, and maintain RESTful APIs using C# and .NET (Core/.NET 6+)

• Build and deploy cloud-native applications on Microsoft Azure (App Services, Azure Functions)

• Translate business requirements into scalable and resilient backend solutions

• Develop and optimize SQL queries, stored procedures, and manage Azure SQL databases

• Implement secure authentication and authorization (Azure AD, JWT, OAuth)

• Integrate with Azure services such as Service Bus, Storage Accounts, and Key Vault

• Collaborate with frontend teams to define API contracts and ensure smooth integration

• Troubleshoot and resolve backend issues across systems

• Develop and maintain unit and integration tests

• Contribute to CI/CD pipelines using Azure DevOps or GitHub Actions

• Monitor and enhance application performance using Azure Monitor and Application Insights

Required Qualifications

• 5–8 years of experience in backend/API development

• Strong proficiency in C# and .NET Core / .NET 6+

• Hands-on experience with Microsoft Azure (App Services, Azure Functions, Azure SQL)

• Solid understanding of RESTful API design and best practices

• Strong experience with SQL Server / Azure SQL (performance tuning, indexing)

• Experience with ORM frameworks such as Entity Framework Core and/or Dapper

• Knowledge of asynchronous programming, dependency injection, and middleware

• Proficiency with Git and modern development workflows

• Working knowledge of frontend technologies (JavaScript, HTML, CSS, React or Angular)

Preferred Qualifications

• Experience with event-driven architecture (Azure Service Bus, Event Grid, Event Hubs)

• Familiarity with containerization (Docker) and Azure Kubernetes Service (AKS)

• Experience with Infrastructure as Code (ARM templates, Bicep, or Terraform)

• Exposure to Azure API Management

• Knowledge of Azure security best practices (Managed Identities, Key Vault)

• Understanding of distributed systems, scalability, and resiliency patterns