> Markdown version of [/jobs/ext/3640572-senior-net-core-developer](https://www.wearedevelopers.com/jobs/ext/3640572-senior-net-core-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior .NET Core Developer

- **Company:** CYNET SYSTEMS INC.
- **Location:** Richmond, VA, United States
- **Experience:** Expert
- **Salary:** $114,400.0 - $124,800.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, .NET Framework, Application Programming Interfaces (APIs), Amazon Web Services, User Authentication, Microsoft Azure, C Sharp (Programming Language), Code Review, Continuous Integration, DevOps, UN Electronic Data Interchange for Administration Commerce and Transport, Entity Framework, Monitoring of Systems, Microsoft SQL Server, Scrum Methodology, Software Engineering, SQL Stored Procedures, Web Application Frameworks, .NET Core, Fast Healthcare Interoperability Resources, Database Optimization, Software Security, Git, Containerization, Kubernetes, Information Technology, Health Level Seven International, Restful APIs, Docker, Web Api, Microservices
- **Published:** October 8, 2026
- **Apply:** https://www.careerjet.com/jobad/us1eda9ca03e35f91dd9411d8065bf6bc0

## About the Role

Our client is seeking a skilled .NET Core Developer with healthcare industry experience to design, develop, and support scalable web applications, APIs, and enterprise solutions. The successful candidate should have strong expertise in .NET technologies, cloud platforms, and healthcare workflows, with the ability to deliver secure, high-performance applications that meet regulatory and business requirements., * Strong experience in C#, .NET Core, and ASP.NET Core.

 * Expertise in Web API development and Microservices architecture.
 * Strong knowledge of SQL Server and database optimization.
 * Experience with Entity Framework Core.
 * Hands-on experience with Azure or AWS cloud services.
 * Knowledge of REST APIs, authentication, and security standards.
 * Familiarity with Git, Azure DevOps, and CI/CD pipelines.
 * Understanding of Agile/Scrum development methodologies., * Experience in Healthcare, Health Insurance, Claims, Provider, Member, Enrollment, or Clinical applications.
 * Knowledge of Healthcare standards such as HL7, FHIR, HIPAA, and EDI transactions.
 * Experience with Docker, Kubernetes, and containerized deployments.
 * Exposure to cloud-native application development and monitoring tools.

Education:

 * Bachelor's or Master's degree in Computer Science, Information Technology, Engineering, or a related field.

Key Skills:
NET Core, C#, Web API, Microservices, Entity Framework Core, SQL Server, Azure, AWS, Healthcare Domain, HL7, FHIR, HIPAA, Docker, Kubernetes, CI/CD, Git, Agile Scrum.

## Description

* Design, develop, test, and maintain applications using .NET Core and C#.
 * Build scalable RESTful APIs and Microservices.
 * Develop and optimize SQL Server databases, queries, and stored procedures.
 * Collaborate with business stakeholders, product owners, and development teams to gather and implement requirements.
 * Integrate applications with healthcare systems and third-party platforms.
 * Ensure application security, performance, reliability, and scalability.
 * Participate in code reviews, troubleshooting, defect resolution, and production support.
 * Implement CI/CD pipelines and DevOps best practices.
 * Create and maintain technical documentation.