I have been in the nonprofit fundraising industry for 12 years and am a Certified Fundraising Executive with my CFRE. During my career, I have managed direct marketing campaigns which includes strategy and content creation for direct mail, email, social media, blogs and websites. Also I've worked on fundraising events, corporate sponsorships and CRM migrations. I am currently a Director of Development for an international nonprofit and am responsible for budgets, analysis, and fundraising campaigns.
The project is not clear on the deliverable and what you are specifically looking for, during the 15 hours. I'd like more details - are you looking for strategy, someone to help build a donor acquisition campaign, how to use social media marketing for fundraising, etc.