Note: The job is a remote job and is open to candidates in USA. Intellisoft Technologies is seeking a Principal Software Engineer to lead the technical architecture and strategy for their Instrument Intelligence Platform. The role involves mentoring engineers, overseeing CI/CD practices, and modernizing legacy applications while ensuring platform security and compliance standards are met.

Responsibilities

• Serve as the technical authority by conducting rigorous code and design reviews, enforcing engineering standards, and mentoring senior engineers across C++, C#, Node.js, and React technologies
• Formalize enterprise DevOps practices by designing and implementing green-field CI/CD pipelines capable of supporting mixed .NET Framework, Node.js, and React technology stacks
• Drive the end-to-end architecture and technical strategy for the Instrument Intelligence Platform, encompassing remote monitoring applets, cloud-native SaaS solutions, and Unity Next clinical QC benchmarking engines
• Establish and govern a unified cross-platform architecture, ensuring seamless interoperability, scalability, and technology alignment across the ecosystem
• Author and maintain Architecture Decision Records (ADRs), High-Level Design (HLD), Low-Level Design (LLD) documents, and interface/data contracts to support platform consistency and governance
• Enforce platform security and compliance standards, including TLS 1.2+, automated secrets rotation through Key Vault, secure code-signing pipelines, AES-encrypted configurations, and zero-PII telemetry compliance
• Lead the modernization of legacy applications by transforming ASP.NET MVC 5 and AngularJS interfaces into highly scalable React 19 Single Page Applications (SPA)
• Design and implement modern REST APIs within the cloud tier to enable scalable, secure, and extensible platform integrations
• Architect and maintain the dual-state Azure-to-AWS cloud migration framework while defining the roadmap for cloud-native multi-instrument fleet APIs and imaging system integrations
• Manage dual-binary codebase constraints by maintaining feature parity and stability across x64/.NET 4.8 and legacy x86/.NET 2.0 transmitter environments

Skills

• 12+ years of software engineering experience
• At least 4 years acting as a Principal Engineer or Software Architect managing multi-tier platforms
• Experience within life sciences, medical devices, or industrial IoT domains
• Deep proficiency in C++/C# Windows services
• Experience with on-device applet software
• .NET Framework architectures (Web Forms, MVC, Web API, WCF)
• Node.js Express
• Experience with frontend ecosystems like React 18/19
• Extensive mastery of enterprise identity and access management, specifically Azure AD, MSAL, and JWT bearer authentication
• Ability to manage co-existing legacy Forms and Windows Authentication models
• Excel in SQL Server multi-database schema design
• Stored procedure governance
• Query optimization
• PowerShell deployment automation
• Robust IIS configuration
• TLS/SSL certificate management
• Rigorous approach to platform security, including TLS 1.2+ enforcement
• Automated secrets rotation
• AES configuration encryption
• Secure code-signing pipeline design
• Proven experience designing custom network protocols or binary/text network layers
• Ability to engineer robust CI/CD pipelines for complex, multi-solution codebases

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