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Senior Full-Stack .NET API Developer

USA💼 Full-time💰 $85,000–$85,000🗓 2026-09-01 → 2026-09-27

Core

Design, build, maintain, and enhance RESTful APIs and React-based UI for an enterprise email and document management system.

Role type

Senior Full-Stack .NET API Developer

Builds

Production web applications, REST APIs, and React front-end components for Office 365 integration

Domain

Enterprise software, Email management, Document management, Microsoft 365

Deliverable

production ML models | product features

Required skills

C#, .NET, ASP.NET Core, REST API development, SQL Server, JavaScript, TypeScript, React, Git, Debugging, Problem-solving

Preferred skills

.NET 6/7/8, Entity Framework Core, Swagger/OpenAPI, Azure, Azure DevOps, Playwright, Microsoft Graph, OAuth/OIDC, Enterprise applications, Large SQL Server databases, AI development tools

Technologies

ASP.NET, Azure, C#, CI/CD, Git, GitHub, HTTP, JavaScript, Microsoft 365, OAuth, Office 365, OpenAPI, Playwright, REST, React, SQL, Swagger, TypeScript

Responsibilities

Design and build RESTful API endpoints for CRUD operations and business workflows; Define and uphold API standards for routing, validation, error handling, and authorization; Maintain API documentation and analyze performance; Develop and optimize SQL queries, stored procedures, and indexes; Integrate APIs with email management and Microsoft Graph; Maintain and improve React application screens and components; Troubleshoot UI and API integration issues; Establish and expand automated testing suites; Participate in code reviews, CI/CD, and issue tracking; Review AI-generated code for correctness and security.

Seniority

Senior, hands-on IC

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