Meet The Team
Grant Writer
Callie Sumpter
Callie is an experienced grant writer who thrives on securing funding and building strong partnerships. She excels at managing the grant application process with precision, collaborating with diverse stakeholders, and conducting in-depth research to craft compelling proposals that perfectly align with funder priorities.
Her background spans nonprofit programming and education, where she has developed a knack for strategic planning and fostering community connections. Callie’s early teaching career sharpened her ability to communicate complex ideas clearly and effectively, a skill she brings to every project.
Holding a Bachelor of Arts in International Relations with minors in Economics and Human Rights, Callie is committed to making a positive impact. She is excited to help nonprofits secure the funding they need to create meaningful change.
Senior Consultant,
Fundraising Strategy & Operations
Krista Vink
Krista is a nonprofit leader and fundraising strategist with nearly 15 years of experience strengthening development operations, donor engagement, and organizational systems. Her background in direct fundraising - including managing a portfolio of 700+ donors - gives her insight into both the frontline and operational sides of development. Krista specializes in change management, system modernization, and equipping teams with tools, processes, and training that drive measurable results. Her work includes leading system upgrades, launching mid-level donor programs, improving donor retention and revenue, and streamlining workflows that make fundraising more efficient for advancement teams. She is known for building structure that helps nonprofits grow with clarity and confidence.
Designer & Creative Partner
Mick Rutowski
Mick is a designer and artist who brings clarity, creativity, and strong visual storytelling to Trisector Consulting’s client projects. With a BFA from Kendall College of Art & Design, he has designed for both nonprofits and local creatives, including leading design work for large-scale fundraising initiatives for the Corewell Health Foundation. Mick also contributes his creative insight to the Grand Rapids Artists Bureau (GRAB) as it works to elevate the region’s visual arts community. At Trisector, he provides clean, intentional design that strengthens fundraising materials, case statements, and organizational storytelling.