About Windmill Hill

At Windmill Hill Consulting, we believe that great fundraising starts with conversations and intentional planning.

With a combined 50 years of experience both as donors and fundraisers,
we’ve been in your shoes and can’t wait to help you.

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Meet the Team

Barbara O’Reilly, CFRE

Founder and Principal

Barbara brings to her clients nearly thirty years of major gifts, annual funds, and campaign fundraising experience at major non-profit organizations including Harvard University, the National Trust for Historic Preservation, Oxford University in England, and the American Red Cross.

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Whether it was leading record-setting reunion classes or securing tens of millions of dollars for some of the world’s most devastating natural disasters, Barbara O’Reilly, CFRE understands that fundraising is much more than just raising money. It’s about enabling donors to realize their philanthropic dreams for issues that are most important to them and to be part of the change they want to see in the world.

Barbara became a Certified Fundraising Executive (CFRE) in 2015 and an Association of Fundraising Professionals (AFP) Master Trainer in 2018. She serves as Past President of the AFP Washington DC Metro Chapter and as a former member of the Advisory Panel for Rogare, The Fundraising Think Tank in the U.K. She is a longstanding partner of the Center for Nonprofit Advancement and a member of the Association Foundation Group (AFG). She is also a member of the faculty of the Graduate Certificate in Nonprofit Management and Leadership at the University of Maryland’s Do Good Institute.

She is a frequent and sought-after presenter at national and international conferences and webinars. Barbara received her BA in English from Barnard College/Columbia University and her ALM in Celtic Studies from Harvard University.  

Lindsey Loyd

Senior Associate

Lindsey Loyd is a non-profit development expert with over 10+ years of experience in the fields of organizational development and fundraising. She brings a depth and breadth of knowledge acquired from providing counsel to over 40 non-profits with a broad spectrum of scope, size, and regional presence.

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Lindsey Loyd’s approach is grounded in objective research and practical experience which she applies to guide organizations along their strategic trajectory. The goal is not only to provide tools and plans for action but to coach clients in the skills and confidence necessary to achieve their philanthropic goals. 

Most recently, at Graham-Pelton Consulting, Lindsey simultaneously managed two campaigns with goals totaling $52 million, acted as an interim Chief Development Officer, and conducted two campaign feasibility studies. Prior to this, Lindsey served as Major Gifts Officer at New Orleans City Park where she solicited philanthropic investments from individual and corporate donors. In this role, she developed a capital campaign strategy, including benchmarking tactics, prospect pipeline, timeline, cases for support, and a gift catalog demonstrating funding needs. 

Earlier in her career, Lindsey was an Associate Director for Orr Group, another consulting firm serving the nonprofit sector. Achievements for her clients during this time include: spearheading comprehensive development for startup non-profit organizations; collaborating with teammates and executive leadership teams to design long-term fundraising plans; managing relationship building with prospective funders by qualifying prospects, strategizing cultivation moves, leading outreach, and submitting funding proposals; co-writing and submitting grant submissions and stewarding successful foundation relationships; and overseeing environmental scans of peer organizations and leading foundation database research to enhance pipelines of major gift donors.  

Derek John Rogers

Senior Associate

Derek Rogers is an expert project manager and team leader, bringing 8+ years of broad fundraising and development expertise to his nonprofit clients.

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As a Director at Orr Group, Derek John Rogers successfully managed development assessments for clients such as the Obama Foundation, Elizabeth Dole Foundation, and Whitman-Walker Health System. His development assessments provide actionable, practical, and customized recommendations that meet his nonprofit clients’ needs to drive them toward achieving their goals.

Derek has also successfully coached chief development officers and major gifts officers, managed development teams to hit fundraising targets and built moves management processes for clients such as Washington Nationals Philanthropies, Georgetown University Medical Center, MedStar Georgetown University Hospital, and the Marriott Foundation for People with Disabilities. He does this by designing creative strategies for cultivating and soliciting donors, building strong interpersonal relationships with fundraising team members, and grounding all fundraising activities in organized and streamlined moves management systems.

Derek is a Committee Member and former Co-Chair of the Sexual Minority Youth Assistance League’s Young Donors Committee. Previously, he served on the Board of Directors of the Young Nonprofit Professionals Network DC Board of Directors. He graduated from George Washington University with a Bachelor of Business Administration.

Veronica Seymour, CFRE

client success manager

Veronica Atkins Seymour joined the nonprofit world 12 years ago through the AmeriCorps Volunteers in Service to America (VISTA) program in Houston, Texas with the College For all Texans Foundation.

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For 6 years, Veronica Seymour served southern Nevada in various capacities by holding positions with Girl Scouts of Southern Nevada, Opportunity Village, Easterseals Nevada (now Capability Health & Human Services), and Nevada Blind Children’s Foundation where she served as their Development Director and then COO. She ventured into the world of fundraising consulting and contract work in 2019.

Veronica holds a Bachelor of Arts in Victim Services from Sam Houston State University and received her certificate for Nonprofit Management at the University of Nevada Las Vegas. She is a Certified Fund Raising Executive (CFRE). She recently completed the DEI in the Workplace Certificate through the University of South Florida.

Raised in a military family, service to others has been instilled in Veronica. She currently serves on the Sigma Sigma Sigma Foundation Board of Directors. Veronica is a member of the Association of Fundraising Professionals, where she served as the 2020 Immediate Past President for the Las Vegas Chapter. In what’s left of her spare time, she enjoys traveling, reading, and staying active.

Katherine Sprissler-Klein

Senior Associate

Katherine Sprissler-Klein brings more than 15 years of fundraising experience at both large national organizations and beloved regional institutions. Her areas of expertise include individual major gifts, annual giving, corporate partnerships, cause marketing, special events and volunteer engagement.

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She holds development expertise in the arts and cultural sector including fundraising efforts for the $525M campaign for the Philadelphia Museum of Art and the Museum of the American Revolution. Previously, Katherine served as the Deputy Director of Community Engagement for Philabundance, the regional Feeding America affiliate, where she led high-profile cause marketing campaigns, corporate partnerships and community fundraising.

Sprissler-Klein also worked in major gifts at the Human Rights Campaign, the nation’s largest LGBTQ advocacy organization, and she spent a formative five years at the American Red Cross National headquarters, where she managed large and multifaceted corporate partnerships, donor communications in times of crisis and high-impact stewardship opportunities and supported call-to-action campaign collateral creation. Sprissler-Klein began her career at the National Women’s Law Center, supporting special events, donor communications and recruitment.

Katherine resides in Philadelphia, PA with her husband, young daughter and rescue pup.

Alyssa Wieting


Alyssa is a mission-driven individual who is passionate about her work as a fundraiser. Having worked in both nonprofit and political fundraising, she has a diverse skill set that she can apply to organizations and campaigns of any size.

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Alyssa Wieting is dedicated to her clients and strongly advocates for their needs as an organization.

Donor relations are at the heart of any fundraising plan. Alyssa uses her experience with major gifts and donor relationships to help equip organizations with the means to plan a fundraising strategy that is best suited for their mission and goals. Notably, she has experience independently managing a $1 million campaign, securing its funds, and building relationships amongst major donors and community leaders while developing a case for support.

Her work has taken her all over the globe, having worked and lived in Asia, Africa, and Europe; she now resides in the United States. She holds a Bachelor’s Degree from DePaul University in Chicago and a Master’s Degree from the University of Nottingham in the United Kingdom. She is also a member of the Association of Fundraising Professionals.

Christe Konopitski

Operations Manager

Christe Konopitski, M.S. NPM has cultivated extensive experience in the nonprofit sector over the last 10 years supporting organizations with missions that impact a wide variety of causes such as healthcare, education, women’s issues, food insecurity, human trafficking, and more.

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Christe’s passion for helping others initiated her entrepreneurial journey in 2021 launching Creative Konsulting Exchange, a nonprofit management and social media marketing consultancy firm. Specializing in operations management, marketing and brand awareness, Christe creates innovative solutions that increase fundraising, strengthen donor relationships, and develop sustainable organizational policies for her clients. Christe has led a wide variety of successful initiatives including organizational rebranding, Board trainings, implementations of new service lines, establishing sponsorship programs, and more.

By fostering genuine relationships, Christe forms collaborative partnerships with her clients to build strategy and marketing that empower nonprofits to capture the attention of their constituents and inspire them to act.

Christe has a Bachelor of Science in Public Relations from the Drexel University Pennoni Honors College and received her master’s in Nonprofit Management from the Drexel University Goodwin College of Professional Studies.

Outside of fundraising and community engagement work, Christe continually tests new ways to connect with others through her personal blog and work with social media. Christe is a board member for Aequitas and The Open Link. She is also a member of several local nonprofit women’s organizations including the Junior League.

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