Principal Engineer (.NET, AWS)

We are hiring a Principal Engineer for a client that provides a cloud-native SaaS platform supporting global creative teams. The platform leverages AWS serverless technologies, .NET, and React/TypeScript. This senior role focuses on architecture, scalability, engineering leadership, and hands-on development. Responsibilities Lead the architectural direction and modernization of a large-scale SaaS platform. Improve system scalability, performance, and reliability. Build features in .NET and AWS (Lambda, API Gateway, DynamoDB, RDS, etc.). Guide backend, frontend, DevOps, QA, and offshore engineers. Implement and uphold engineering best practices and code standards. Collaborate with Product leadership to deliver high-quality releases. 10+ years of experience building SaaS applications. 3+ years in a Principal Engineer or Tech Lead role. Strong C#, ASP.NET , .NET Core, and xUnit experience. 1+ years AWS experience: Lambda, API Gateway, S3, CloudFormation, RDS, DynamoDB, EC2, Cognito. Strong system architecture and distributed systems expertise. Ability to review and guide React/TypeScript development. Excellent leadership and collaboration skills. Bachelor’s degree in Computer Science or related field (preferred). Hybrid (New York, NY) Direct hire only. Must be a U.S. Citizen or Green Card holder. No C2C / No Third Parties.