Lead .Net Software Engineer

KANINI; Nashville (TN); On-site; USD 120,000 - 140,000; Full time

Job summary

A tech company in healthcare is seeking an experienced Lead Software Engineer to design and deliver scalable healthcare applications. This role combines hands-on full-stack development with technical leadership, focusing on React and ASP.NET Core microservices. Ideal candidates should have 8+ years of software engineering experience and expertise in cloud platform architectures. The position is contract-based, requiring onsite work 2-3 days a week in Nashville, TN.

Qualifications

• 8+ years of professional software engineering experience with hands-on full-stack development.
• Strong expertise in React for front-end development.
• Deep experience with ASP.NET Core, C#, Web APIs, and microservices architecture.
• Experience working in healthcare domains, including compliance and security considerations.

Responsibilities

• Lead the design and development of scalable, modular enterprise applications.
• Architect and modernize legacy systems into .NET Core microservices.
• Design and implement rule-driven, event-based microservices.
• Define and enforce best practices for code quality and performance.
• Build and maintain modern front-end applications using React.
• Develop secure, scalable RESTful APIs using ASP.NET Core.

Skills

React

ASP.NET Core

C#

microservices architecture

Azure

CI/CD pipelines

healthcare domains

Tools

GitHub Actions

Azure DevOps

SQL databases

NoSQL databases

Kafka

Job description

Title: Lead Software Engineer (React/.Net)

Onsite: 2-3 days a week

Type: Contract

Length: 12-18+ months

Work Authorization: This position requires direct W-2 employment. We are unable to consider C2C, 1099, or third-party candidates.

OVERVIEW

We are seeking an experienced Lead Software Engineer to design, build, and lead the delivery of scalable, enterprise-grade healthcare applications. This role combines hands-on full-stack development with technical leadership, modernizing legacy systems, architecting cloud-native microservices, and delivering intuitive, high-performance user experiences. The ideal candidate will have deep expertise in React front-end development, .NET Core backend systems, cloud platforms, and event-driven architectures, with a strong understanding of healthcare workflows and compliance requirements.

RESPONSIBILITIES

• Lead the design and development of scalable, modular enterprise applications supporting patient scheduling, onboarding, and clinical workflows.
• Architect and modernize legacy systems into .NET Core 6/7 microservices, improving maintainability, performance, and extensibility.
• Design and implement rule-driven, event-based microservices to support complex scheduling and real-time workflows.
• Define and enforce best practices for code quality, performance, security, and scalability across teams.
• Build and maintain modern front-end applications using React, delivering responsive, user-friendly experiences.
• Develop secure, scalable RESTful APIs using ASP.NET Core, integrating with SQL and NoSQL databases.
• Integrate with external EHR systems using healthcare standards such as FHIR and HL7.
• Design CI/CD pipelines using GitHub Actions and Azure DevOps to automate testing, containerization, and deployment.
• Ensure applications comply with HIPAA and healthcare data protection regulations, implementing secure authentication and role-based access control.
• Optimize application performance through caching strategies, database indexing, and query optimization.
• Conduct code reviews, unit testing, and enforce secure development practices.
• Partner closely with product managers, designers, business analysts, clinical teams, and senior leadership to translate business requirements into technical solutions.
• Lead greenfield initiatives and deliver projects on time through structured planning, risk management, and stakeholder alignment.
• Mentor engineers, promote knowledge sharing, and contribute to a strong engineering culture within Agile/Scrum teams.

QUALIFICATIONS

Required

• 8+ years of professional software engineering experience with hands-on full-stack development.
• Strong expertise in React for front-end development.
• Deep experience with ASP.NET Core, C#, Web APIs, and microservices architecture.
• Proven experience modernizing legacy systems into cloud-native architectures.
• Strong experience with Azure, relational and NoSQL databases, and CI/CD pipelines.
• Experience working in healthcare domains, including compliance and security considerations.

Preferred

• Experience with Kafka, event-driven systems, and real-time data processing.
• Familiarity with FHIR and HL7 healthcare integration standards.
• Experience leading greenfield UI or platform initiatives.
• Strong background in Agile delivery, mentoring engineers, and cross-functional collaboration.