Leadership
Our Leadership Team
Meet the passionate leaders behind Global Media Outreach.
Jamie Radtke
CEO & President
Jamie Radtke brings over 30 years of leadership experience across corporate, nonprofit, and public sectors. Her expertise spans executive management, public relations, customer acquisition and engagement, marketing and communications, content development, and fundraising. Currently serving as the CEO of Global Media Outreach (GMO), Jamie previously held the role of Chief Growth Officer at the organization.
Before joining GMO, Jamie was the President & CEO of Explore God, leading the organization’s mission to help people explore their faith. Prior to her work in the nonprofit sector, Jamie spent 20 years in the public sector, where she played a significant role in various initiatives, including her 2012 campaign for the United States Senate.
Jamie holds a Master of Public Policy from The College of William & Mary and a Bachelor of Science from Liberty University.
Beyond her professional endeavors, Jamie and her husband of over 25 years are passionate advocates for foster care and adoption. Together, they have four children, and their youngest was adopted from foster care at the age of 8.
Yvonne Carlson
Chief Technology Officer
Yvonne holds a Bachelor’s Degree in Psychology and completed graduate work in Information Communications Technology. She is a member of the Institute of Electrical and Electronics Engineers Computer Society and serves in leadership positions with the NRB, FaithTech, and Missional AI.
Her work experience includes technology leadership positions in multiple industries, including broadcasting, global manufacturing, advertising, fundraising, and higher education.
Michelle Diedrich
Chief Experience Officer
Michelle has served in multiple senior executive roles with Global Media Outreach since the ministry began in 2004.
Prior to her ministry work, she served as CMO and VP of Marketing for multiple enterprise software and start-up companies and provided consulting for other non-profit organizations and software companies.
Her journalism career included serving as Executive Editor of Technology South and Atlanta Computer Currents. With a background in technology and journalism, she loves looking for new ways to share Jesus online.
Michelle and her husband, Mark, live in Florida but love visiting their grown daughters.
Dave Hammock
Chief Financial Officer
Dave has been with Global Media Outreach since March 2014. Before that, he served for 3 years in a dual role as the Chief Operating Officer and Chief Financial Officer of a ministry focused on a persecuted people group in the Middle East.
Dave retired from an assistant vice president position at AT&T in April 2011, where he had been employed for over 36 years. During his tenure at AT&T, he held a number of different departmental assignments in Missouri and Texas.
He holds a Bachelor’s Degree in Management and a Master’s Degree in Marketing. Dave and his wife, Marsha, both Missouri natives, are members of Stonebriar Community Church in Frisco, TX, where Dave serves as an elder. The Hammocks have two grown sons and a grandchild who also reside in the North Dallas area.
Richard Chang
Solutions Director
Rich joined Global Media Outreach with extensive expertise in program and product management, along with nine years as a missionary and pastor in Japan. At GMO, he as served as product lead and also led key process improvement projects to streamline operations. His background includes leadership roles at Fortune 500 tech companies and leading fintech organizations, where he successfully managed product offerings and drove strategic initiatives.
Rich is passionate about making a lasting impact, blending his business acumen with his heart for ministry to support the mission of sharing the message of Jesus Christ.
Doug Gillquist
Senior Director of Development
Doug joined GMO in 2023 and has an extensive background working in relational fundraising for over 25 years. Doug also brings leadership experience from his time on staff at Focus on the Family, UNW Media, Family Research Council and Prison Fellowship Ministries.
Doug received his degree from the University of Northwestern in St. Paul, Minnesota where he was also eventually employed and helped in growing the listener support of UNW’s growing Christian Radio network. Doug and his wife Melanie have three married daughters and now three grandsons. He is passionate about pouring into people, including the ultimate truth found in Jesus Christ and in seeing people grow in their Christian faith.
Tom Seely
Senior Director of Global Outreach
Tom Seely has over two decades of experience in digital strategy and ministry leadership, specializing in digital marketing, strategic planning, as well as online evangelism and discipleship. Since joining Global Media Outreach in 2022, he has led the Outreach Team, overseeing all paid advertising efforts for the ministry globally.
Prior to Global Media Outreach, Tom served for 29 years with Cru, a global ministry dedicated to fulfilling the Great Commission. He spent 18 years in Budapest, Hungary, where he was Director of Digital Strategies for Central & Eastern Europe. In this role, he helped establish more than 10 online ministry teams across Eastern and Central Europe.
Tom holds a Bachelor’s Degree in Computer Science from Texas A&M University. He currently resides in New York City with his wife of 34 years, and they have four adult children.
Kim Stiver
Senior Director of Marketing
With almost 30 years of experience leading global brands through paradigm shifts, Kim Stiver blends art and science in her approach to strategic thinking, marketing planning, and brand-centric communications. As an award-winning brand storyteller and highly-regarded executive leader in integrated marketing, organizational communications, and key stakeholder relations, Kim joined Global Media Outreach in 2024 and leads a dynamic team focused on developing and managing sustainable creative and content experiences that capture, motivate, and nurture global audiences across multiple brand channels.
Kim’s leadership background and marketing expertise spans B2B, B2C, church, and nonprofit segments with a proven track record of evaluating market trends, conducting opportunity assessments, and launching go-to-market strategies for high-tech, subscription-based, and CPG products and services. She holds a Bachelor’s Degree in Communication from Berry College and resides in Northern California. With a passion for helping people discover the unparalleled satisfaction and joy of abiding in a deeply aligned relationship with Jesus, Kim has continually served for decades as a teacher, devotional writer, and spiritual growth mentor focused on bridging the gap between Sunday morning experiences and the realities of daily living.
Board of Directors
Scott Seaman
Chairman of the Board
John Crawford
Vice Chairman
John Beckett
Director
Andrew Wiegand
Director
Mark Modjeska
Director
Promod Haque
Director