Senior .NET Backend Architect for Enterprise Apps

Quantum Technologies LLC; Miami (FL); On-site; USD 110,000 - 140,000; Full time

Job summary

Quantum Technologies. LLC is seeking a Senior .NET Developer to design, develop, and maintain enterprise applications using C# and modern .NET technologies.

You will lead backend services with ASP.NET Core, RESTful APIs, and a microservices approach, while guiding junior engineers and collaborating across cross-functional teams. The role emphasizes scalable, secure software solutions hosted in cloud environments (Azure or AWS), with CI/CD pipelines and code reviews as core practices.

Qualifications

• Design, develop, and maintain enterprise applications using C# and .NET Core.
• Develop scalable backend services with ASP.NET Core Web API.
• Build and evolve RESTful services in a microservices architecture.
• Work with ORM and data access using EF Core/LINQ.
• Write complex SQL queries, stored procedures, and performance-tuned code.

Responsibilities

• Design, develop, and maintain enterprise applications using C# and .NET Core.
• Build scalable backend services using ASP.NET Core and Web API.
• Develop RESTful APIs and implement Microservices architecture.
• Design and implement components using OOP principles.
• Collaborate with architects, QA, BAs, and product teams.
• Mentor junior developers and provide technical leadership.
• Implement unit and integration testing with xUnit/NUnit/Moq.
• Maintain documentation and deployment procedures.

Skills

C#

ASP.NET Core

Web API

Microservices

EF Core

SQL Server

Azure

CI/CD

Unit Testing

Technical leadership

Tools

Azure DevOps

Jenkins

GitHub Actions

Job description

Quantum Technologies. LLC is seeking a Senior .NET Developer to design, develop, and maintain enterprise applications using C# and modern .NET technologies.

You will lead backend services with ASP.NET Core, RESTful APIs, and a microservices approach, while guiding junior engineers and collaborating across cross-functional teams. The role emphasizes scalable, secure software solutions hosted in cloud environments (Azure or AWS), with CI/CD pipelines and code reviews as core practices.