> Markdown version of [/jobs/ext/4566638-sr-net-developer](https://www.wearedevelopers.com/jobs/ext/4566638-sr-net-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. .NET Developer - **Company:** Talentry, LLC - **Location:** Seattle, WA, United States - **Experience:** Expert - **Salary:** $180,000.0 - $200,000.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Application Programming Interfaces (APIs), Amazon Web Services, Amazon Elastic Compute Cloud, Architectural Patterns, C Sharp (Programming Language), Software Quality, Data Security, DevOps, Github, Windows Presentation Foundation, Microsoft Software, Microsoft SQL Server, OAuth, Performance Tuning, Systems Development Life Cycle, SQL Stored Procedures, Management of Software Versions, Web Application Frameworks, .NET Core, ReactJS, Front End Software Development, Restful APIs - **Published:** November 4, 2026 - **Apply:** https://www.careerbuilder.com/job-details/sr-net-developer-seattle-wa--84977b41-0800-477e-b41a-ad8523b19f1e ## About the Role Microsoft .NET, Microsoft .NET, Team Player, Leading Edge Technology, Small Company, Scalable System Development, Application Programming Interface (API), Microsoft ASP.NET (Active Server Page), Microsoft C# (C Sharp), Performance Tuning/Optimization, * Deep expertise in C# and the .NET ecosystem (.NET Framework, .NET Core, .NET 8). * Advanced SQL Server skills, including stored procedures and optimization. * Hands-on experience with AWS (EC2), GitHub, and REST API design/versioning. * Familiarity with WPF and translating legacy components to modern tech. * Proficiency in front-end integration (React/TSX); bonus for strong React skills. * A passion for secure, scalable code and mentoring others ## Description * Design and develop high-performance applications using C#, .NET Framework, and .NET Core, leveraging .NET 8 for modern architectures (ASP.NET Core, minimal APIs, BFF patterns). * Optimize and maintain SQL Server databases, utilizing Dapper ORM for efficient data access and performance tuning. * Drive cloud-based solutions on AWS (EC2), ensuring scalability and reliability. * Integrate seamlessly with front-end teams (React, TSX) to deliver cohesive APIs and user experiences. * Migrate and enhance WPF-based components, adapting them to modern frameworks. * Champion security best practices, DevOps principles, and OAuth2 flows (OpenIddict). * Mentor junior developers and elevate code quality through rigorous reviews.