Looking for Presales expert for Proposal & User Manual Writing for Software Projects in CRM & ERP products

Looking for presales expert with skills in proposal & user manual writing for software projects in CRM & ERP products. This will be ongoing work for long term. Individuals needs to have very good skills in writing corporate proposals based on requirements and then write user manuals for developed solution. Prior experience will be big plus though not must if you think you have skills. Products are CRM & ERP solutions for wide range of industries.