Our Leadership
Visionary Leaders, Servant Hearts.
Behind every strategic decision, technological innovation, and ministry expansion at ExploreGod is a team of leaders who are passionate about one thing: ensuring that anyone, anywhere has the opportunity to know Jesus and flourish in their new faith.
Our leadership team brings together decades of experience in digital ministry, technology innovation, organizational leadership, and cross-cultural missions. They're visionaries who see the potential of the digital mission field, strategists who chart the course for exponential Kingdom impact, and servants who remain grounded in the day-to-day realities of changed lives.
From pioneering new advertising strategies to developing cutting-edge discipleship technologies, from building sustainable partnerships to ensuring financial stewardship, our leaders are united by a common mission and driven by an uncommon passion for reaching the lost.
Meet the executive team guiding ExploreGod's mission to reach the world with the Gospel through innovative digital ministry.
Executive Team
Jamie Radtke
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.
After two decades in public policy and politics, she stepped into full-time ministry — first founding a nonprofit reaching young adults with the transformational love of Christ, then serving as President and CEO of the original ExploreGod before its strategic merger with Global Media Outreach in 2017. Following her tenure as Chief Growth Officer of the merged organization, she now leads the unified global ministry under the ExploreGod name.
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, who have been married for 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
With over 20 years of experience in Christian broadcasting and digital innovation, Yvonne Carlson serves as the Chief Technology Officer at ExploreGod. She is dedicated to leveraging next-generation tools—such as data systems and AI-assisted platforms—to expand global digital outreach while remaining deeply rooted in the Gospel mission.
Prior to her current role, Yvonne served as Vice President of Product at Unite Life and held key strategic leadership positions at Moody Radio Network and Pathway to Victory at First Baptist Dallas. She holds a bachelor's degree in Psychology from Colorado Christian University and conducted graduate studies in Information Communications Technology at the University of Denver.
A recognized voice at the intersection of faith and technology, Yvonne serves on the Board of Directors for both the National Religious Broadcasters (NRB) and FaithTech, a global movement championing redemptive technology. As a member of IEEE and a leader within Missional AI, she actively shapes discussions on AI ethics, ensuring digital transformation serves as a vessel for genuine human connection and discipleship.
Kim Stiver
With over 30 years of experience leading global brands through paradigm shifts, Kim 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 ExploreGod 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.
Tom Seely
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 ExploreGod in 2022, he has led the Outreach Team, overseeing all paid advertising efforts for the ministry globally.
Prior to ExploreGod, 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 and his wife currently reside in Orlando, FL. They have four adult children.
Laura J (LJ) Landmann
Laura J (LJ) Landmann brings over 15 years of nonprofit leadership experience aligning strategy, finance, operations, philanthropy, and people to advance mission-driven impact. Before joining ExploreGod, LJ served as Vice President of Finance & Operations at BioLogos, where she helped grow the organization from a startup to a sustainable nonprofit by strengthening systems, streamlining processes, and building infrastructure for long-term impact.
She thrives at the intersection of vision and execution—developing high-performing teams, optimizing operations, and delivering results. She is passionate about aligning operations with Kingdom impact, fostering cultures where people and mission thrive, and using her strategic insight and hands-on experience to help advance ExploreGod’s mission to share the transformative power of Christ’s love globally.
LJ holds a Master’s Degree in International Relations and Human Rights from the University of Kent (UK) and a Bachelor’s Degree in Political Science from Westmont College. Guided by her faith, she strives to reflect the love and truth of Jesus in her work, relationships, and decisions. Outside of work, LJ enjoys spending time with her husband and their three daughters.
Senior Leadership Team
Richard Chang
Rich joined ExploreGod with extensive expertise in program and product management, along with nine years as a missionary and pastor in Japan. At ExploreGod, 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
Doug joined ExploreGod in 2023 and has an extensive background of 25+ years in relational fundraising in ministry settings. 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, MN, where he helped increase the listener support of UNW’s growing Christian radio network.
Doug and his wife, Melanie, have three married daughters and five grandchildren. He is passionate about pouring into people and mentoring — specifically in the areas of team building, sharing the ultimate truth found in Jesus Christ, and seeing people grow in their Christian faith.
Timothy Marquart
Timothy Marquart is a technology and analytics leader dedicated to building the scalable digital infrastructure required for global Kingdom impact. As Vice President of Technology, Tim oversees engineering, platform delivery, and data strategy, ensuring that ExploreGod’s technological “science” remains a powerful vessel for the “art” of human connection.
Tim’s career is marked by a track record of enterprise-scale transformation. Prior to joining the ministry, he led advanced analytics for Verizon’s Global Services division, managing teams that informed billions of dollars in business decisions. He also held engineering leadership roles at Imperial Oil/ExxonMobil. Tim holds dual master’s degrees from the Massachusetts Institute of Technology (MIT)—an MBA from Sloan and an SM in Mechanical Engineering.
A long-time friend of the ministry, Tim served on ExploreGod’s Technology Advisory Board for two years before joining the executive team. He is particularly passionate about the redemptive potential of technology, viewing ExploreGod’s proprietary PATH platform as a historic tool for fulfilling the Great Commission in a digital age.
Tim’s own faith journey began in college when he encountered the evidence for the Gospel through The Case for Christ. Today, he is motivated by the “5-Star Strategy” to help millions of seekers move from initial curiosity to flourishing faith. Tim resides in Texas with his wife of 15 years and their three children.
Board of Directors
Governance Rooted in Wisdom and Accountability
ExploreGod is governed by a diverse board of experienced leaders who bring expertise in ministry, technology, business, finance, and global missions. They serve sacrificially, providing strategic guidance and accountability while ensuring we remain faithful to our calling and responsible in our stewardship.
Our board doesn't just oversee — they champion. They challenge us to think bigger, reach further, and innovate boldly, while maintaining the financial integrity and missional focus that have defined this organization since its founding.
Our Board of Directors ensures that ExploreGod remains positioned for sustainable growth, maximum impact, and unwavering commitment to the Great Commission.
Meet the leaders who steward our mission with wisdom, integrity, and vision.
Scott Seaman
Scott is active in the investment management industry. He has experience with public, private, and ministry boards. He is a Certified Public Accountant (CPA) and holds a Bachelor of Science in Business Administration from Bowling Green State University.
John Crawford
John Crawford is retired from Intel and holds 52 patents in computer engineering. He is a member of the National Academy of Engineering and a fellow at the Computer History Museum. He holds a Master of Science in Computer Science from the University of North Carolina at Chapel Hill and a Bachelor of Science in Computer Science from Brown University.
John Beckett
John Beckett is the author of several books and is a retired executive from the manufacturing industry. He was named Entrepreneur of the Year by Ernst & Young in 2003. He holds a Bachelor of Science in Economics and Mechanical Engineering from the Massachusetts Institute of Technology (MIT).
Promod Haque
Promod Haque works in the venture capital industry. He holds a Doctor of Philosophy (Ph.D.) in Electrical Engineering and a Master of Business Administration from Northwestern University.
Mark Modjeska
Mark Modjeska has experience in the chemical and petrochemical industries and is an author. He holds a Master of Science in Chemical Engineering from North Carolina State University and a Bachelors of Arts in Chemistry from the University of Missouri-Columbia.
Price Harding
Price Harding has over 30 years of experience in the executive search industry and serves as Chairman of CarterBaldwin, one of the fifty largest executive search firms in the US. Price is also an avid angel investor and has served on the boards of various private companies and non-profit organizations. He holds a Bachelor of Arts in Theology from Baptist University of America and conducted master’s level studies at Temple Baptist Seminary.
Technical Advisory Board
Innovation Anchored in Biblical Truth
As pioneers in digital evangelism, we stand at the cutting edge of technological innovation using artificial intelligence, machine learning, and advanced platforms to reach more people with the Gospel. But with great technological power comes great responsibility.
Our Technical Advisory Board exists to ensure that every innovation, every platform enhancement, and every technological advancement is shepherded by biblical wisdom and guided by the Holy Spirit. These trusted advisors bring deep expertise in technology, theology, ethics, and ministry asking the hard questions, providing strategic counsel, and helping us navigate the complex intersection of faith and innovation.
They don't just advise on what we can do technologically they help us discern what we should do. Their guidance ensures that our use of AI, data, and digital tools honors God, protects the vulnerable, respects human dignity, and remains faithful to biblical truth in every application.
As we continue to innovate and expand our technological capabilities, our Technical Advisory Board serves as a compass keeping us grounded in Scripture while empowering us to boldly leverage every tool God provides for exponential Kingdom impact.
Meet the advisors who ensure our technological advancement remains faithful to Scripture and guided by the Holy Spirit.
John Crawford
Holds 52 patents in computer engineering.
Ben Elmore
Founder of 9 tech startups.
Andrew Esparza
Top 100 Marketing & Advertising Leader.
Promod Haque, PhD
SV Forum Visionary Award Winner.
Dr. K.
National security, ethics, & emerging tech thought leader.
Chris Lesner
Marketing leader helping thousands of non-profits thrive.
Timothy Marquart
Multiple innovation award-winner focusing on efficiency and profitability improvement.
Michael Matta
Experience with Amazon and Databricks; Builder of world-class teams and successful organizational-growth driver
Thomas Osborn
Technology-driven discipleship innovator.
Gregory Richardson
Global expert and author on cyber and AI security.
Johnnie Sharp
Leader in federal and local law enforcement and cybersecurity
Daniel Whitenack, PhD
Data scientist & machine learning models expert
Yvonne Carlson
Richard Chang
Leadership roles at Fortune 500 tech companies and leading fintechs; former missionary and pastor
Adam Graber
Digital discipleship expert