Senior .NET Developer

Prime Source Technologies (PST) is seeking a skilled and motivated Senior (expert level) “.NET Core” Developer to design, develop, and optimize modern, high-performance, and scalable enterprise applications. This role requires deep technical expertise in .NET Core and related Microsoft technologies, along with strong knowledge of cloud-native development, modern front-end frameworks, microservices, and DevOps practices. The job location is in Northern Virginia (Initially 3 days' work from the office). The Senior .NET Core Developer will collaborate closely with Project Managers, Architects, Testers, and UI/UX designers to deliver cutting-edge solutions using the latest technologies and best practices.

This position is open to W2, 1099, C2C and H1B. 

POSITION DESCRIPTION:

Design, develop, and maintain robust, scalable, and secure applications using C#, ASP.NET Core (.NET 8 ) Blazor and Razor Pages

Design and implement RESTful APIs and GraphQL endpoints for cross-platform integration.

Build microservices-based applications with containerization (Docker, Kubernetes).

Integrate applications with Azure services (Azure Functions, Azure App Service, Azure SQL Managed Instance, Azure Service Bus, Azure Storage, etc.).

Implement clean architecture principles and domain-driven design (DDD).

Optimize application performance, security, and scalability.

Collaborate with UI teams building responsive and dynamic interfaces using Blazor.

Maintain CI/CD pipelines using Azure DevOps or GitHub Actions.

Ensure high-quality code via unit testing, integration testing, and automated test frameworks. Ø Apply secure coding practices (OWASP guidelines, authentication & authorization with Identity Server or Azure AD).

Write architecture and design documents as needed.

Mentor junior developers and participate in peer code reviews.

Minimum bachelor’s degree in computer science, Engineering, or related field.

10 years of professional software development experience, with at least 3 years in .NET Core in a large, enterprise project

Expert in C#, ASP.NET Core, Entity Framework Core, and LINQ.

Experience in microservices architecture and containerized deployments (Docker, Kubernetes).

Hands-on and extensive experience with cloud platforms (Azure preferred).

Proficiency in SQL Server (T-SQL, stored procedures, triggers, performance tuning).

Experience with message brokers (Azure Service Bus, RabbitMQ, Kafka).

Extensive experience with front-end frameworks (Blazor/Razor).

Experience with DevOps and CI/CD workflows.

Excellent problem-solving and communication skills.

Nice to Have

Experience with AI/ML integration in .NET applications.

Experience with event-driven architecture and CQRS pattern.

Experience with ArcGIS or GIS-based systems.

Experience with Angular or React

EDUCATION/ TRAINING/ CERTIFICATIONS:

Bachelor's degree in Computer Science, Engineering or related fields

Microsoft certification, Cloud and AI certification is highly desired

FRAUD ALERT:

Please be aware that Prime Source Technologies (PST) will never request a chat-based interview or solicit any form of payment from applicants or employees during the hiring process. We do not require fees, deposits, or personal financial information at any stage. All legitimate communication, from recruiters or hiring staff, will come from a @primesource.com email address.
If you have any concerns about the authenticity of a PST job posting or communication, please contact us at info@primesource.com.

EOE Statement
We are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, national origin, disability status, protected veteran status or any other characteristic protected by law.