You are probably thinking of management or business consultants like McKinsey and the like. A lot of companies will hire a consultant as a permanent member of s

You are probably thinking of management or business consultants like McKinsey and the like. A lot of companies will hire a consultant as a permanent member of staff when they are working in a specialist domain note they may be called something different like solution architect or suchlike but they are acting as consultant. I've been in several that had these types. I think the only companies that didn't were companies in industries that didn't need any specific domain experience example here are one that did: * Oil and Gas (Flow metering) * Network Timing and Sync testing * Health and Care (Worked in Care and had several) * Practice Management Ones that didn't * Data analysis * Data warehousing