Senior .NET Core Developer

Job Title: Senior .NET Core Developer

Location: Morris County, NJ Onsite 3x Weekly

Local Candidates Only

Job Description

We are seeking an experienced Senior .NET Core Developer to join a high-visibility team supporting a major SaaS client in Morris County, NJ. This is a long-term contract role requiring onsite presence three days per week. Only local candidates will be considered.

The ideal candidate will bring deep expertise in backend engineering using C#, .NET Framework, and .NET Core, with strong proficiency across SQL and NoSQL databases, microservices, and cloud-native development. This role involves designing, building, and optimizing scalable backend systems within a modern distributed architecture.

Key Responsibilities

Backend Development & Architecture

• Design, develop, and enhance backend services using C#, .NET Framework, and .NET Core (6/7/8).

• Build and maintain RESTful APIs and microservices architectures.

• Implement best practices for scalable, maintainable backend solutions.

Database Engineering

• Develop and optimize SQL Server databases, including complex queries and performance tuning.

• Work with NoSQL databases such as MongoDB and AWS DynamoDB to support distributed data needs.

• Utilize Entity Framework Core for ORM-based development in both synchronous and asynchronous environments.

Cloud-Native & DevOps Contribution

• Work with Docker and Kubernetes (2+ years) for containerization and orchestration.

• Support deployment and operational best practices within a microservices ecosystem.

Required Qualifications

• 10+ years of professional development experience with C# and the .NET ecosystem.

• 5+ years of hands-on experience designing and building solutions with .NET Core (6/7/8).

• Strong expertise with SQL Server database development and performance optimization.

• Proficiency with MongoDB and AWS DynamoDB.

• Solid experience leveraging Entity Framework Core with async/sync programming patterns.

• 2+ years of experience with Docker and Kubernetes.

• Proven experience developing microservices and RESTful APIs.