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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Web Applications Developer - **Company:** Haymarket Media, Inc. - **Location:** New York, NY, United States - **Experience:** Expert - **Salary:** $120,000.0 - $130,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, C Sharp (Programming Language), Software as a Service, Cloud Computing, Code Reuse, Continuous Integration, Software Design Patterns, Middleware, Entity Framework, Identity and Access Management, Microsoft SQL Server, Object-Oriented Software Development, Windows PowerShell, Standard Sql, Swagger, Web Applications, Workflow Management Systems, Openapi, Telerik, .NET Core, Cloud Monitoring, Blazor, Backend, Git, Material UI, Solid Principles, Playwright, Browser Testing, Front End Software Development, New Relic (SaaS), Serverless Computing, Docker, Web Api, Microservices - **Published:** July 18, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=27b5a4f6ada840d8 ## About the Role The ideal candidate for this position is a detail focused leader and self starter who is comfortable working on a lean, highly productive development team. As a Haymarket Senior Applications/Services Developer you are a hands-on individual who is motivated by the combination of good object oriented design with high performance microservice programming to build smart extensible, reusable, and scalable applications. The ideal candidate will have 5+ years of solid Web API and data centric application experience, and can bring to the table architectural and design ideas., * Thorough grounding in C# (.Net Core/.Net 5<) * Proficient understanding REST, Web APIs * Serverless and cloud hosting (AWS preferred) * Proficient in SQL (SQL Server) and Entity Framework * Experience with front-end component libraries (Telerik preferred) * Experience with CI/CD * Experience in microservices * Proficient understanding of OOP standards, C# Solid Principles and design patterns * Proficient understanding of Git * Experience with observability platforms (New Relic/Google Cloud Monitoring) * Knowledge of TDD * Bachelor's degree in related field or equivalent work experience Nice To Have Skills: * Swagger/OpenAPI based documentation * Playwright browser testing * Powershell scripting * Experience building Blazor applications * Docker/Containerized CI/CD pipelines * Good understanding of ADA accessibility principles and ensuring that application will adhere to them Special Instructions: * A cover letter and sample codes are required. ## Description This role's scope includes building and maintaining several important and high visibility services and applications, including: identity/access management, data-intensive internal applications, middleware connecting various 3rd parties and SaaS products, and specialized APIs serving targeted business and operational needs. You will need to be a great communicator and team player helping to bridge the gap between product, business requirements, technical constraints. You keep an eye on performance and stay up-to-date on emerging technologies and trends to understand how they could be applied here at Haymarket. Mentoring and providing guidance for junior developers is critical to this role and the team at large. Responsibilities: * Develop new user-facing and backend features in collaboration with product * Deliver functional - testable code on or before due dates * Produce strong documentation for both internal teams and external partners * Work in a ticketed workflow system * Build reusable code and libraries * Optimize application for speed and scalability * Collaborate with team members and stakeholders * Integrate with other engineering teams on a project basis ## Related Videos - [Blazor Unleashed: The Future of .NET Web Development](https://www.wearedevelopers.com/videos/1564-blazor-unleashed-the-future-of-net-web-development) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [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) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)