Volunteer your expertise to strengthen nonprofits
We welcome skills-based volunteers! As a Subject Matter Expert, share your talents with innovative nonprofits.
Volunteers work in:
Finance
Human Resources
Information Technology
Marketing and Design
The C-Suite
Volunteers help by:
Reviewing pitches
Coaching nonprofit founders
Researching grants
Facilitating peer chat sessions
…and more!
What our volunteers do
Early-stage nonprofit leaders are often their own IT department, finance team, HR manager, marketing coordinator—and still expected to deliver programs to their communities. With small teams and tight budgets, they’re doing extraordinary work under enormous pressure.
Greater Sum helps guide these organizations through this critical growth stage. Through our Virtual Incubator and Promising Practices Accelerator, we offer nonprofit strategic planning, fundraising training, and operations support—all grounded in real-world experience.
But the real engine behind this work is our volunteer network of Subject Matter Experts.
Interested in volunteering with one of the nonprofits we support?
Each featured organization is a U.S.-based nonprofit that is early-stage, innovative, scalable, and a graduate of our Promising Practices Accelerator.
Please reach out to the organization directly if you’re interested in volunteering.
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Volunteer Resources
