Sr. .NET Developer

Must be able to work W2 - Cannot provide Sponsorship - No C2C

100% Remote

This role leads the development of key applications, including a mission-critical claiming system for Medicaid and Medicare that serves as the central platform for tracking and managing claims. You will design, build, and optimize secure, scalable, and maintainable solutions using C#, .NET 8+/ASP.NET Core, and modern cloud and Dev Ops practices. The position requires strong technical leadership, hands‑on development expertise, and the ability to drive architecture and technical strategy in a highly collaborative, fully remote environment.

• Lead end-to-end design and development of core applications, with a focus on a Medicaid and Medicare claiming system used to track and manage claims data.
• Develop high-quality, maintainable, and testable code using C#, .NET 8+/ASP.NET Core, JavaScript/Type Script, HTML, and CSS.
• Design, implement, and optimize SQL Server databases, including schema design, query optimization, and performance tuning.
• Build and maintain RESTful APIs and microservices that support secure, scalable, and reliable application functionality.
• Implement and uphold secure application design principles, ensuring protection of sensitive data and adherence to security best practices.
• Leverage Azure cloud services and Azure Dev Ops to design and maintain CI/CD pipelines, automate deployments, and improve delivery efficiency.
• Use Git and related tooling to manage source control, branching strategies, and code reviews.
• Containerize and orchestrate services using Docker and Kubernetes to support scalable, cloud‑native architectures.
• Apply event‑driven architecture patterns where appropriate to improve system responsiveness, scalability, and decoupling.
• Provide Senior technical leadership by mentoring developers, reviewing code, and enforcing coding standards and best practices.
• Collaborate closely with business and executive stakeholders to understand requirements, communicate technical solutions, and align technology strategy with business goals.
• Drive continuous improvement in application performance, reliability, and scalability through monitoring, refactoring, and architectural enhancements.
• Contribute to and help define the overall architecture and technical roadmap for the applications under your responsibility.
• Implement automated testing and Dev Ops practices to improve software quality, reduce defects, and streamline releases.
• Ensure project milestones and delivery commitments are met by effectively estimating effort, managing priorities, and coordinating with cross‑functional teams.

• Approximately 12+ years of professional software development experience.
• At least 10+ years of hands‑on experience with C# and .NET/.NET Core.
• Extensive experience developing applications with .NET 8+/ASP.NET Core and ASP.NET Core MVC.
• Strong proficiency in building RESTful APIs and integrating them into enterprise applications.
• Advanced experience with SQL Server, including database design, query optimization, and performance tuning.
• Hands‑on experience with Entity Framework for data access and ORM.
• Proficiency with JavaScript/Type Script, HTML, and CSS for web application development.
• Experience using Git for source control in a collaborative development environment.
• Practical experience with Azure Dev Ops or similar CI/CD platforms to support continuous integration and delivery.
• Proven experience providing Senior technical leadership, mentoring developers, and enforcing coding standards and technology strategy.
• Ability to communicate effectively with technical teams, business stakeholders, and executive leaders.
• Strong problem‑solving skills with the ability to diagnose complex issues and propose…