Being in a small team of less than 10 people, it was crucial to get buyin from the founders during this process. I worked with the founders to devise a team wide strategy to conduct the research to gather much useful information as possible within an initial 2 month period. 
SOLUTION 
- Appoint a lead to interview and collect insights for each user group  
I split up the work between myself and the two founders, each concentrating on a specific user group (volunteers, NFP, & HR managers) to get a pulse check on mindsets from current and fresh users. 
 - Drill into the data from quantitative and qualitative research 
Using the research that was gathered through interviews and diving into Google Analytics, the founders and I had extensive brainstorm sessions to understand the behaviors behind the patterns that were emerging. 
 - Update personas with information gained from research 
I checked the insights against the personas that previously existed, updating where needed and creating new ones that weren't represented before.