Meet Our Leadership Team
Our Staff:
Mark Buckner - Lead Pastor
Mark is the Lead Pastor at Antioch Waltham and one of the overseers for Antioch New England ("ANE"). He holds a Master's Degree from Fuller Seminary.
Mark and his wife Susan have four adult children, two of whom are married with children. They have worked together in ministry for 30+ years in college ministry, international missions and church planting, and Susan is also a pediatrician.
Mark is passionate about helping people discover their own gifts and passions through discipleship, mentoring and coaching.
Sophia Ma - Associate Pastor of Community Connection
Born and raised in New York City, Sophia moved to the Boston area for school (Wellesley College '98 and Tufts Occupational Therapy program '02), and has now called Antioch Community Church of Waltham home since 2014. Sophia is passionate about people experiencing God's transforming love in community and longs to see people own their identity as God's beloved children. As someone who has personally experienced deep levels of healing and freedom in her walk with Jesus, Sophia is eager to see this same freedom for others who may walk in shame or bondage. Sophia's role on staff is to help build intentional community by supporting community group leaders as well as helping individuals get connected and build relationships.
In her free time, Sophia enjoys taking walks/hikes with her husband and two children, playing her ukulele, and connecting with her family and friends. She also loves playing anything that creates laughter and bonding... and may even bring out some fun competition! Sophia's favorite friendly competitions range from fish bowl and charades to ultimate frisbee and volleyball.
Richard Wang - Young Adult Coordinator and Church Administration
Amanda Wang - Young Adult Coordinator
Richard grew up in China and moved to the US for college at the University of Wisconsin-Madison. It was his mother's boldly sharing the Gospel and persistent prayer (though new in her own faith), as well as Cru's fellowship that led Richard to give his life to Christ right before finishing his masters degree in statistics.
Richard and Amanda met at Antioch, and they now live in Waltham. Richard works full time as a data scientist in a marketing research company, while Amanda works as a full-time teacher. Antioch Waltham has been the nurturing place for both of their faith and growth in following Jesus.
Richard and Amanda are passionate about helping young adults know and follow Christ through discipleship!
Christopher Greco - Worship Pastor
Christopher has been leading worship for over 30 years in the Boston area. He and his wife Dorothy feel most at home in multi-generational, multi-ethnic and Spirit-attuned settings. Weekdays, Christopher directs theatre at Lexington Christian Academy and manages their worship and performing arts center.
He describes himself as “equal parts contemplative, fiery Italian, neurotic stand-up improviser, and empathetic pastoral care-giver.” His training is similarly eclectic: film and TV at Boston University (B.S. 1985), playwriting at Brandeis (M.F.A.1992), and counseling and theology at Gordon-Conwell Theological Seminary (M.A. 2017).
Christopher and Dorothy love to kayak, hike, host, and collaborate with God in seeing the impossible come forth in the lives of men and women.
Tim & Sarah Yoon - Directors of College Ministry
Tim and Sarah are passionate about college ministry as they both became Christians as young adults. Their lives were transformed by the love of God when they encountered the Holy Spirit in powerful and intimate ways. This experience significantly changed how they perceive God’s heart and kingdom, as well as our identity in Christ. They want everyone to know that He is alive, His love is real, and He desires to talk/interact with every one of us today as in the early days of the gospels. The college ministry group strives to foster the sense of community by loving God, each other, and the world around us.
Tim is currently working at a tech company. He has a B.S. from Cornell and a Ph.D. from M.I.T. He was on a M. Div track at Gordon Conwell Theological Seminary (hoping to continue and finish it some day!). Sarah is working as a dentist. She has a B.A. from Vanderbilt and a D.M.D. from Boston University. Tim and Sarah love reading, hiking, biking, and taking day trips with their three children.
Julia Kraszewska - Children’s Ministry Coordinator
Julia and her husband, Ethan, are blessed with one child. Originally from Poland, she has lived in the U.S. since 2019. She holds bachelor’s degrees in both Theology (from Portland Bible College in Portland, OR) and Psychology (from Indiana Wesleyan University, Marion, IN) reflecting her love for God’s Word and her desire to understand and care for people well.
She is especially passionate about teaching and children’s ministry, where she finds joy in helping kids know and love Jesus. Her heart is to encourage families in their walk with God, and to see children grow strong in their faith.
Annie Dunn - Youth Pastor
Annie Dunn relocated to Boston in 2025 after graduating from Texas A&M with a degree in Child Professional Services in December of 2024. As she prayed about what was next in her life, she felt God clearly say to move to Boston!
Throughout college, Annie served with the kids and college ministry at her church, worked at youth camps, tutored part time at different high schools, and was a nanny. Annie loves coffee, reading, and playing games outside, and all things fun and silly. But most of all, she absolutely LOVES following Jesus. She is excited to walk alongside the youth of Antioch New England in pursuing a relationship with Jesus and obeying His leadership.
John Clark - Director of Business Operations
John graduated from Florida International University in 1999 with a BBA in Business Administration, and in 2006 with a J.D. from New England School of Law, passing the Massachusetts bar exam that same year. He practiced law for approximately 4 years before feeling the Lord calling him to full time ministry with Antioch Community Church.
John believes that Godly business practices are essential, especially for a church. He is passionate about coaching people and seeing their lives transformed as they discover their God-given destiny.
John is married to Lia and they live in Waltham with their four children.
