Senior .NET Developer (ASP.NET Core, REST APIs)

Quantum Technologies. LLC; New York (NY); On-site; USD 90,000 - 140,000; Full time

Job summary

Quantum Technologies LLC in New York seeks an experienced .NET Developer to design, build, test, and maintain scalable software using Microsoft stack. You will work on backend services, RESTful APIs, and data access with SQL Server, EF Core, and modern .NET versions.

You will collaborate with analysts, QA, and architects, perform unit testing, participate in code reviews, and follow Agile/Scrum practices. The role offers on-site work in NYC with competitive pay and benefits.

Qualifications

• Strong hands-on experience with C# and .NET.
• Experience with .NET Core or modern .NET versions.
• Knowledge of ASP.NET MVC and ASP.NET Core.
• Experience developing REST APIs and web services.
• Strong SQL Server and database development skills.
• Knowledge of Entity Framework or Entity Framework Core.
• Understanding of object-oriented programming (OOP) concepts.
• Experience with Git and version control systems.
• Knowledge of unit testing and debugging.
• Strong analytical, problem-solving, and communication skills.

Responsibilities

• Design, develop, and maintain applications using C# and .NET technologies.
• Build web applications and backend services using ASP.NET Core and .NET.
• Develop and integrate RESTful APIs and web services.
• Work with SQL Server databases, stored procedures, and queries.
• Write clean, reusable, and maintainable code.
• Perform unit testing, debugging, and application troubleshooting.
• Identify and resolve application defects and performance issues.
• Collaborate with business analysts, QA engineers, architects, and other developers.
• Participate in code reviews and technical design discussions.
• Support application deployment, maintenance, and production issue resolution.
• Follow Agile/Scrum methodologies and software development best practices.

Skills

C#

.NET

ASP.NET

Web API

SQL Server

Entity Framework

OOP concepts

Git

Unit testing

Debugging

Communication skills

Tools

Docker

Kubernetes

Azure

AWS

Job description

Quantum Technologies LLC in New York seeks an experienced .NET Developer to design, build, test, and maintain scalable software using Microsoft stack. You will work on backend services, RESTful APIs, and data access with SQL Server, EF Core, and modern .NET versions.

You will collaborate with analysts, QA, and architects, perform unit testing, participate in code reviews, and follow Agile/Scrum practices. The role offers on-site work in NYC with competitive pay and benefits.