There are several common engagement models for hiring a dedicated .NET developer, depending on your project needs and budget: 1. Dedicated Team Model: You hire a full-time .NET developer or a team who works exclusively on your project. Ideal for long-term projects with evolving requirements. 2. Time & Material Model: You pay for the actual time and resources used. Best for projects with unclear scope or frequent changes. 3. Fixed Price Model: The project cost is agreed upon upfront. Suitable for short-term projects with well-defined scope and deadlines. 4. Staff Augmentation: You add skilled ASP.NET developers to your existing team to fill specific skill gaps without long-term commitments. 5. Offshore Development Center (ODC): A remote team works as an extension of your in-house team, often providing cost-effective and scalable development. Each model offers flexibility based on your technical, timeline, and financial needs.