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Senior Dotnet Developer

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Onsite

Senior Dotnet Developer

Seneca Resources

Senior Dotnet Developer

Skills

SQL QueriesC#.NETTesting & QAMicroservicesPower BIAzure

25 days ago

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Important information


Contract type:

Freelance / Contract

Location:

New York, NY, USA

Work mode:

Onsite

Published on:

29 September 2026

What they need


Key Responsibilities

  • Design, develop, and maintain enterprise applications and integration services using C# and .NET Core.
  • Build and support secure, high-performance RESTful APIs and microservices using ASP.NET Core.
  • Develop solutions for processing, validating, and transforming healthcare data using HL7 messaging standards.
  • Design and optimize SQL Server databases, stored procedures, and complex queries.
  • Implement CI/CD pipelines and deploy applications using Azure DevOps and Azure cloud services.
  • Troubleshoot application, integration, and data exchange issues while ensuring system reliability and performance.
  • Collaborate with business stakeholders, analysts, QA teams, and technical leadership throughout the software development lifecycle.
  • Follow modern software architecture best practices, including microservices and event-driven design.

Required Qualifications

  • 7+ years of professional software development experience.
  • Expert-level experience with C#, .NET, and .NET Core.
  • 3+ years of hands-on experience working with HL7 v2 messaging standards.
  • Strong experience developing ASP.NET Core Web APIs and microservices.
  • Experience designing scalable, cloud-based applications using Microsoft Azure.
  • Advanced knowledge of SQL Server, database design, query optimization, and stored procedures.
  • Experience with Azure DevOps and CI/CD pipelines.
  • Experience with reporting tools such as SSRS, Power BI, or similar platforms.
  • Strong understanding of modern software architecture and integration patterns.
  • Bachelor's degree in Computer Science or a related technical field.

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