8+ years of experience with .NET development, with a firm grasp of C#, ASP.NET Core, APIs, Entity Framework, or related technologies. Experience with REST API's. Experience working on Commercial / ISV software products. Ability to lead technical discussions, set direction, and coach other engineers. Experience leading discussions with partners and 3rd party vendors. Experience building and maintaining Windows Services, especially for on-premise systems. Experience with message queues, background workers, scheduled jobs, and batch pipelines. Deep experience building integrations using APIs, webhooks, queuing, and polling strategies. Clear understanding of resilient distributed systems and failure patterns. Experience working with authentication models used by older systems (API keys, token rotation, basic auth). Experience with cloud platforms such as Azure, AWS, or GCP.