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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stacke.NET Developer - **Company:** Simon & Schuster, Inc. - **Location:** New York, NY, United States - **Experience:** Expert - **Salary:** $120,000.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Artificial Intelligence, Automation of Tests, Unit Testing, CA Workload Automation Ae, Microsoft Azure, Batch Processing, C Sharp (Programming Language), Configuration Management, COBOL (Programming Language), Code Generation, Code Review, Software Debugging, Entity Framework, Microsoft SQL Server, SQL Azure, Software Tools, Webui, SQL Stored Procedures, Transact-SQL, TypeScript, Data Logging, Test-Driven Development (TDD), ReactJS, Blazor, Backend, AngularJS, Integration Tests, Front End Software Development - **Published:** August 28, 2026 - **Apply:** https://www.manhattanjobs.com/job.asp?id=3367805820&tx=HT7064TYZ&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## About the Role * 5+ years of professional full-stack .NET development - C#, .NET (modern .NET 6+ preferred), building and operating production services. * Experience using AI tools to assist development - e.g., AI-assisted code generation, code review, test generation, or documentation - with the judgment to critically validate generated output before it ships. * Strong SQL Server / T-SQL skills - stored procedures, set-based logic, transactions, and query-performance fundamentals. * Back-end service experience - background/worker services, scheduled or batch processing, structured logging, and configuration management. * Front-end web development experience - modern web UI with ASP.NET Core (Razor/Blazor) or a JavaScript/TypeScript framework (React, Angular, or similar). * Production mindset - experience owning code that runs unattended in production: error handling, restartability, observability, and safe deployment practices. * Strong debugging and problem-solving skills, including reasoning about data-level differences between two systems. * Clear written communication - design notes, code review feedback, and operational documentation., * Experience on a legacy-modernization, system-replacement, or platform-migration program. * Exposure to legacy or mainframe-style environments (e.g., COBOL-era batch systems) - enough familiarity to work effectively with legacy specialists when analyzing existing behavior. No COBOL programming required. * Order processing, fulfillment, supply-chain, or EDI domain experience. * Data-access frameworks such as Dapper or Entity Framework Core. * Batch scheduling environments (AutoSys or similar) and overnight batch operations. * Azure experience - SQL Server on Azure VMs, Azure SQL Managed Instance, or Azure-hosted services. * Automated testing practices - unit testing, integration testing, or test-driven development. ## Description * Build modern replacements - Implement .NET worker services, APIs, and T-SQL stored procedures that replace legacy COBOL batch programs while preserving required business behavior. * Review and refine AI-generated code - Use AI-assisted development for speed, then apply engineering judgment: correctness, edge cases, error handling, performance, and maintainability are yours to guarantee. * Implement target architecture patterns - Apply the program's established patterns: structured logging and run telemetry, configuration-driven behavior, parallel-run ("shadow") support, restartability, and clean integration contracts. * Support validation and cutover - Instrument every replacement for reconciliation against legacy output; work with the QA / Test Automation Engineer to drive each package to a clean validation gate before production cutover. * Resolve complex conversion issues - Debug behavioral differences between legacy and modern implementations, working with legacy specialists to understand what the original code actually does. * Front-end development - Build and maintain modern web UI components as the program modernizes user-facing workflows (browser-based replacements for legacy green-screen transactions). * Contribute to engineering standards - Capture lessons learned, improve shared frameworks and templates, and help raise the quality bar as the team scales., * Replacement packages move through build and validation at a steady cadence, passing reconciliation against legacy output with few surprises. ## Related Videos - [Blazor Unleashed: The Future of .NET Web Development](https://www.wearedevelopers.com/videos/1564-blazor-unleashed-the-future-of-net-web-development) - [Building Multi-Tenant ASP.NET Core Applications: Best Practices and Real-World Solutions](https://www.wearedevelopers.com/videos/1552-building-multi-tenant-asp-net-core-applications-best-practices-and-real-world-solutions) - [Developer Tools for Microsoft Azure](https://www.wearedevelopers.com/videos/450-developer-tools-for-microsoft-azure) - [Blazor – the new SPA Framework for everyone who hates JavaScript](https://www.wearedevelopers.com/videos/699-blazor-the-new-spa-framework-for-everyone-who-hates-javascript) - [Architectures that we can use with .NET](https://www.wearedevelopers.com/videos/935-architectures-that-we-can-use-with-net) - [Why you must use TDD now!](https://www.wearedevelopers.com/videos/114-why-you-must-use-tdd-now) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix) - [Dev Digest 137 - AI'm not sure about this](https://www.wearedevelopers.com/magazine/485-dev-digest-137-ai-m-not-sure-about-this)