Cloud Database Architect/Consultant

We need a consultant who is an expert in large, complex cloud databases/data warehouses. Our main challenge is storage and retrieval for an object with potentially a huge number of attributes. You must be conversant in all leading commercial cloud databases. Your expertise should include data structures, data storage setup, data storage scaling plus the following:
• Structured data
• Unstructured data
• Big Data
• Data warehouses
• Azure
• AWS
• Google Cloud
• Key-value

We need someone who is available immediately. Initial conversation will likely be 1-3 hours. We will need ongoing input for the next few months.