Testimonials
“Transformative for Our Organization”
“I am delighted to share my exceptional experience working with Neviz Strategies, led by the remarkable Andeliz Castillo. As the founder of [my 501c4], I’ve collaborated with numerous talented professionals, but Andeliz’s unique qualities make her truly stand out.
Andeliz is a mission-driven leader whose authenticity and attention to detail are evident in every interaction. Her 20 years of experience across business operations, project management, public affairs, and more bring an unmatched depth of expertise. Beyond her role as a relationship-builder, Andeliz has demonstrated remarkable strategic acumen through her work on our strategic planning, including setting performance metrics and intended outcomes that have significantly shaped our organization’s direction.
Her work on budget forecasting scenarios has been particularly invaluable, helping us navigate various financial landscapes with confidence. This, coupled with her cultural competency and vast network, has been instrumental in our success at both [501c4 organization] and [501c3 organization].
Working with Andeliz and Neviz Strategies has been transformative for our organization. Her commitment to excellence and strategic foresight have propelled us to new heights. I cannot recommend Andeliz and Neviz Strategies highly enough to anyone seeking an exceptional partner for their endeavors.”
— President & CEO of a Kansas City 501(c3) education organization and Executive Director of 501 (c4) education organization
September 2025
CEO, nonprofit in Atlanta, GA
“Andeliz nearly single-handedly saved my organization at a critical moment when I experienced an unexpected staff transition during our most important election cycle. Not only was Andeliz a consummate professional, she went above and beyond to support the training and development of junior operations staff members, got our org operations in functional condition, and left us with guidance to sustain the work long-term. If you follow her lead, Andeliz will get your organization in top operational shape!”
April 2025
Communications Director, City Fund
“I’ve had the pleasure of working with Andeliz Castillo and Neviz Strategies on multiple fronts, from high-profile advertising campaigns to complex research initiatives and strategic communications planning. Andeliz consistently brings rigor, creativity, and a knack for clear, actionable insights that keep every project on track and on message. Her partnership has elevated our work and helped us connect more deeply with stakeholders at every level.”
March 2024
Founder & CEO, Rhode Island Education nonprofit
“Collaborating with Andeliz Castillo and Neviz Strategies on our communications plan and branding for [our 501 c3 organization] was a great experience. Their expertise, innovative approach, and deep understanding of our goals resulted in a compelling and effective strategy. We are extremely satisfied with the final results and found working with Andeliz to be a pleasure—her professionalism and commitment truly made a difference in launching our organization.”
August 2025
Executive Director of education advocacy organization in Texas
“Neviz Strategies has been an indispensable partner in helping our startup nonprofit get off the ground! Over the past year, Andeliz provided us with exceptional strategic communications guidance, consistently delivering high-quality work that exceeded our expectations. She went above and beyond to meet our needs, making herself available at all times and welcoming feedback with an open mind. Her efforts ensured that our communications were perfectly tailored to our local audience. We couldn’t have achieved our success without her support! I highly recommend Neviz Strategies to any organization seeking top-notch strategic communications expertise.”
June 2025
Executive Director, Missouri Education nonprofit
“Andeliz is a focused, strategic partner who brings both structure and insight to every project. She’s incredibly organized, keeps teams aligned, and knows how to move work forward efficiently. Her support was key in turning our message research and ad development campaign into a well-executed and compelling effort.”