Principal .NET Full Stack Enginee

We are looking for an experienced Principal .NET Full Stack Engineer to lead the architecture, development, and ongoing improvement of this platform. This is a hands-on technical leadership role for an engineer with deep expertise in the Microsoft technology stack, Azure cloud architecture, Windows-based applications, and secure healthcare software.

You will work directly with a U.S.-based engineering team to build reliable, scalable, and secure systems that support clinical workflows.

What You'll Do

• Lead the architecture, development, and maintenance of full-stack applications using C#, .NET, ASP.NET, and Microsoft Azure.
• Design and maintain secure, scalable, multi-tenant cloud applications, REST APIs, and SQL-based data solutions.
• Develop and support Windows Services, background agents, and desktop application integrations.
• Build and maintain reliable data synchronization between Windows-based diagnostic instruments and Azure-hosted systems.
• Implement authentication, authorization, role-based access control (RBAC), tenant isolation, and protection of sensitive health information (PHI).
• Develop PowerShell scripts for deployment, automation, troubleshooting, and infrastructure management.
• Diagnose and resolve production issues across cloud infrastructure, backend services, databases, and Windows environments.
• Improve application security, automated testing, CI/CD pipelines, and software release processes.
• Conduct code reviews, establish engineering best practices, and mentor other developers.
• Collaborate with U.S.-based engineering and clinical teams to deliver dependable healthcare software.

What We're Looking For

• 10+ years of professional software development experience, including technical leadership or architecture ownership.
• Strong hands-on expertise in C#, .NET, ASP.NET, REST APIs, and SQL.
• Proven experience building and maintaining applications on Microsoft Azure, including multi-tenant cloud architectures.
• Practical experience developing or supporting Windows Services, desktop applications, or Windows-based background agents.
• Strong PowerShell scripting and automation skills.
• Experience implementing secure data synchronization, certificate-based authentication, and troubleshooting Windows environments.
• Solid understanding of application security, RBAC, tenant isolation, and protection of sensitive data.
• Experience with GitHub, GitHub Actions, CI/CD, and Jira.
• Healthcare technology experience involving digital health, medical devices, clinical software, EHR integrations, HIPAA, or PHI-sensitive systems.
• Strong problem-solving skills, architectural judgment, and the ability to lead technical initiatives hands-on.
• Fluent English (C1 or equivalent) and the ability to collaborate effectively with U.S.-based teams.

Nice to Have

• Experience with medical devices, diagnostic instruments, or clinical decision-support platforms.
• Knowledge of HL7, FHIR, and EHR integrations.
• Experience with data replication, offline synchronization, or device-connected applications.
• Familiarity with X.509 certificates, OWASP ZAP, Microsoft Defender for Cloud, and security remediation.
• Experience with Selenium, Azure DevOps, or regulated software development and release processes.

What We Offer

• 100% remote work, with candidates based in Latin America preferred.
• Full-time, long-term B2B contract.
• Direct collaboration with a U.S.-based engineering team.
• An opportunity to lead the development of healthcare technology used in clinical environments.
• 10 paid U.S. public holidays.
• Vacation and sick leave are unpaid.

Security and Compliance Requirements

Due to the sensitive nature of the platform and its healthcare environment, the engagement includes the following requirements:

• Use of an SRS-provided computer with required Microsoft security settings.
• Criminal background check before engagement.
• Completion of annual HITRUST security training.
• Virtual home-office security assessment, including screenshots of home-network settings.

Work Arrangement

• Location: Remote — Latin America preferred.
• Employment type: Full-time, long-term B2B contract.
• Collaboration: U.S.-based engineering and clinical teams.
• Language: Fluent English (C1 or equivalent).

If you have extensive experience with .NET and Azure, understand the complexities of Windows-based systems, and want to apply your technical leadership to healthcare technology, we'd like to hear from you.