THE ULC TEAM

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TIM AHLMAN

Sr. Pastor - Christ Greenfield

Tim is a third-generation pastor who has 13 years of pastoral experience with a doctorate in Organizational Leadership with an emphasis on missional and collaborative traits of pastoral leaders. Tim helped unite and mobilize a struggling church to become healthy, start new ministries to diverse people groups, and launch a multi-site ministry approach using home-grown leaders. Tim specializes in innovative thinking with a passion for the convergence of vision & execution. Tim has experience guiding churches, pastors, and leaders towards achieving their fullest potential. Tim has been married 16 years to his high school sweetheart - he married way up. Jesus gave them three sweet and delightfully (most of the time) different children. When not mentoring others or reading, you can find Tim on the golf course in sunny Arizona!

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JACOB BOESSLING

Lead Pastor & Missional  Enterprenuer 

Jake began his career in ministry 15 years ago as a Director of Christian Education, and now is a lead pastor of a multi-site campus. He is pursuing a doctorate in Organizational Leadership at Fuller Seminary. He is a micro and multi-site multiplier after having pursued his passion and founded La Mesa Ministries, a homeless resource center in Mesa, AZ. As a natural-born encourager and innovator, Jake is the lead host of an online podcast called LeadTime. When not coaching and mentoring individuals in personal, spiritual, and leadership development, you can find Jake outdoors with his wife of 13 years and their three children enjoying activities like camping, hiking, and serving the community.  

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JACK KALLEBERG

Christ Greenfield Operational Executive Director

Jack is a retired U.S. Army veteran of 22 years, where he served as a musician of the US Army Band and as a certified Master Resiliency Trainer.  In the public sector, he earned a degree in Finance and worked extensively in corporate finance, commercial lending, technology, and small business development.   Jack began his career in executive church leadership 15 years ago.  As an experienced professional, Jack has been asked to teach at several national and district level conferences.  He is an experienced operational church consultant, specializing in church systems & strategy, and is currently enrolled at Kairos University completing his Masters in Christian Leadership.   Jack lives in Mesa, Az with his wonderful wife of 20 years and his teenage son.  He continues to live out his passion for playing music.  Today, you can find him jamming on the drums with the worship team most Sundays at Christ Greenfield’s Gilbert Campus.

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TANIA HILTON

Unite Leadership Operations Coordinator

Affiliating herself with the church for the first time in 2015, Tania would consider herself a “New Believer”, yet her mentors saw right away her leadership potential and passion for Christ. 4 years later, Tania was asked to join the ULC team. As a self-taught, skilled coordinator, and an adaptive self-starter, Tania has taken on many roles and is always up for a challenge. She is currently pursuing a BA in Christian Thought & Practice at Kairos University with plans to pursue a Masters in Counseling. University. Married for 14 exciting years, Tania is also a full-time stay at home mother to three children ages 13 - 9 years old. When not studying or being driven crazy by her teenager, Tania enjoys reading,  personal development, and spending quality time with her husband.

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TREY COX Ph.D

Unite Leadership Curriculum Coordinator

Graduate of Concordia University Wisconsin with his doctorate from Arizona State University in Curriculum and Instruction, Trey’s guidance to the ULC team has been invaluable in terms of professional development and vision casting. He has a passion for marriage, family, and small group ministries. Trey is a mathematics professor at Chandler-Gilbert Community College and is the Director of Family Ministry Development at Christ Greenfield. In addition, he works for Saddleback Church as the Small Group Network Cohort Director assisting each of their worldwide Small Group Regional Leaders with professional development and networking opportunities. He has been married for 33 years to Janell with whom he has successfully raised three young men, two of whom are married. His oldest son, Caleb, is a pastor in Colorado. During his free time, he likes to hike, bike, golf, and check out the latest movies on the big screen.