Sales for Web Development Consultancy and Build

Looking for a sales-person who can confidently sell highly technical consultancy and / or "build" services for a web development company. We offer consultancy for companies who have issues with their web development processes (whether their development is done internally or externally,) are having trouble delivering projects on time, need help expanding, or simply don't have a web development function and need help to create one (again, internally or externally) In addition, we offer back-end web development services - this means that we can handle the technical heavy lifting on a project. We can build full applications, data analysis systems, or just the back-end to power a web site, shop, and so on. We're not looking to become a digital agency churning out small web sites, though we're happy to provide back-end development services to exactly those agencies, where their internal function doesn't cover that. I have no idea how much this job should be paying, but happy to consider hourly rates, commission basis or a combination of the two.