Keystone, a division of Valsoft, is seeking a highly motivated Fullstack Developer to support and modernize our Microsoft-based application stack. This role involves maintaining and enhancing an existing legacy ASP application, assisting in the transition to modern technologies (e.g., Blazor, .NET Core), integrating with ValPay, and managing CI/CD pipelines and IIS-hosted infrastructure.

We are open to junior candidates with high learning capacity and strong technical fundamentals who are eager to take ownership and grow within a fast-paced, pragmatic development environment.

Key Responsibilities

Maintain and extend a production ASP (Classic/ASP.NET Web Forms) application with high attention to quality, security, and performance. Modernize components of the application using Blazor WebAssembly, C#, and .NET Core as part of a long-term migration strategy. Integrate ValPay (Valsoft’s preferred payment solution) into the existing payment workflows, ensuring PCI-compliant implementation and smooth user experience. Manage and troubleshoot Windows Server environments, particularly IIS-hosted applications, ensuring reliability and minimal downtime. Design, implement, and improve CI/CD pipelines, leveraging GitHub Actions, Azure DevOps, or comparable tools. Document systems, processes, and technical decisions clearly and thoroughly