Sr. Full Stack Engineer- .Net

Position Summary: We are seeking a Senior Full Stack Engineer to design, develop, and deploy scalable web applications. Our stack includes React and TypeScript on the front end, with C#/.NET services and SQL Server and Postgres databases on the back end. The ideal candidate has deep experience building complex integrations, particularly in healthcare using standards like FHIR. You will also work fluently with agentic coding tools like Claude Code, building the test harnesses and guardrails that let agents run safely against our codebase.Essential Duties/Responsibilities:Design, develop, test, deploy, and maintain scalable web applications using React, TypeScript, C#/.NET, SQL Server, and Postgres, writing reusable, reliable code across the front end and back end.Develop and manage robust APIs and system integrations, with a strong emphasis on healthcare data integrations using standards like FHIR.Build and debug containerized applications in a Kubernetes environmentCollaborate closely with product managers, designers, data engineers, and other stakeholders to understand requirements and translate them into technical solutions.Design and manage database schemas and queries using SQL Server and Postgres.Implement and maintain data security and privacy measures, ensuring strict compliance with regulations like HIPAA.Troubleshoot and resolve complex technical issues across the stack.Use agentic coding tools such as Claude Code as a routine part of the development workflow: scope work for agents, review agent-generated changes, and hold that output to the same review, security, and quality bar as human-written code.Design and maintain the test harnesses that make autonomous agentic coding viable: fast and deterministic unit, integration, and end-to-end suites, seeded test data, fixtures and mocks for external systems, and reproducible local and CI environments.Contribute to technical documentation, code reviews, and team knowledge sharing.Mentor junior engineers and contribute to the continuous improvement of development processes and practices.Evaluate and recommend new technologies and tools to enhance our application stack and development capabilities.Participate in an on-call rotation schedule for critical application support as needed.Required Skills/Abilities:Proven experience as a Full Stack Engineer or similar role, with a strong portfolio of web applications.Senior-level proficiency in front-end development using React and Typescript.Strong back-end development experience with C#/.NET.Strong proficiency in SQL and extensive experience with relational databases, specifically SQL Server and Postgres.Experience building and consuming RESTful APIs and managing system integrations.Solid understanding of software development principles, design patterns, and best practices.Hands-on experience using AI coding assistants or agentic coding tools in professional software development, with sound judgment about where they help, where they do not, and how to verify their output.Experience with version control systems, specifically Git.Strong problem-solving skills and clear communication with both technical and non-technical teams.Understanding of data security best practices and compliance requirements, especially HIPAA within a healthcare context.Ability to work independently, manage multiple priorities, and thrive in a dynamic, remote environment.Education/Experience:Bachelor’s degree in Computer Science, Engineering, or a related field, OR 4-6 years of practical experience.5+ years of professional experience in full-stack software development.Demonstrable experience architecting and delivering complex software projects.Experience working in an Agile development environment.Preferred Skill/Abilities: Experience working within the Healthcare industry.Direct experience with healthcare data standards, particularly FHIR, and building healthcare integrations. Experience with HL7 is also a plus.Experience with cloud platforms, such as AWS (S3, RDS, Lambda, etc.).Experience with GitLab is a plusExperience with containerization (Docker, Kubernetes) and CI/CD pipelines.Familiarity with infrastructure-as-code tools (e.g., Terraform, CloudFormation).Experience with Go (Golang) is a plus.Work Environment/Physical Requirements: This is a full time remote position.Ability to sit for prolonged periods of time.MUST LIVE IN ONE OF THE STATES BELOW:1. Arkansas2. Arizona3. Colorado4. Florida5. Georgia6. Illinois7. Louisiana8. Maryland9. Massachusetts10. Michigan11. Mississippi12. Missouri13. Nevada14. North Carolina15. Ohio16. Oklahoma17. Pennsylvania18. South Carolina19. Texas20. Virginia21. UtahMUST BE A U.S. CITIZEN OR GREEN CARD HOLDER. NO 3RD PARTY, NO C2C.