Our Leaders


Josh Hahne

Senior Pastor

Josh joined the Redeemer community in September of 2019. He has twenty plus years of pastoral experience and has served the Lord in a variety of positions in seven PCA churches. Most recently, he started then served King of Kings Church in Goodyear, AZ. He has served as the Chairman of the Board of the Southwest Church Planting Network as well as the Moderator of the Southwest and Arizona Presbyteries. He received a masters of Divinity from Westminster Theological Seminary in Philadelphia and has a B.A. in Business with a Minor in Religious Studies from Texas Christian University. He is married to Melissa and has three children: Lara (15), Christian (14), and Mary (11). Josh enjoys spending time with his family, reading, golfing, and is a fitness enthusiast.


adam feichtmann

associate Pastor

Adam is a 4th generation Southern Californian, whose family has been in Orange County for over 100 years. He joined Redeemer in early 2013. He and his wife Karina have two elementary school children and all enjoy going to the beach as much as possible. Adam graduated from Biola University with a BA in Christian Education, earned a MA in Biblical and Theological Studies from Talbot School of Theology, and has taken several advanced theology classes from numerous seminaries. A former resident of Australia and avid surfer, Adam is an ocean enthusiast who can be spotted regularly at beaches from Newport to San Onofre. 


Derek Rishmawy

RUF Campus Minister UCI

Derek is an Orange County native who has returned to serve with students at Reformed University Fellowship at UC Irvine. Most recently he and his wife McKenna have spent the last four years in Chicagoland where Derek was working on his Ph.D. in Systematic Theology at Trinity Evangelical Divinity School (still in process). Before that he got an undergrad at UC Irvine in Philosophy and an MA in Biblical Studies at Azusa Pacific. He also spent years working with college students at local, Orange County churches. He and McKenna enjoy spending time reading, watching movies, grilling with friends, and good conversation.


chad brewer

RUF International & Global Director

Chad joined the Redeemer community in July 2015, when he moved from Minnesota to Orange County with his wife Christie and three daughters Charis, Chara, and Caelin. He received a Bachelor of Arts from Shippensburg University in Pennsylvania and a Master's of Divinity from Covenant Seminary in St. Louis. His experience as an RUF campus minister over twenty-one years includes taking over an existing ministry at the University of Missouri as well as starting up new RUF ministries at Penn State University, the University of Minnesota, and the University of California, Irvine. In June of 2019, Chad began working with RUF to oversee campus ministry to international students studying in the United States (RUF-International) and ministry to college students on overseas campuses (RUF-Global). Chad is a man of many loves and likes: he loves his girls (wife and daughters), playing sports, '70s and '80s music (especially “Yacht Rock”); and he likes BBC TV and reading about history.


Amanda Knox

Children’s Ministry Director

Amanda and her husband Clint have been members of Redeemer since 2001. A true California native, Amanda grew up in Orange County and graduated from Long Beach State with a BS in Biology Education. She does not remember a day when she was not involved in Redeemer’s Children’s Ministry in some capacity, and is passionate about sharing the love of Christ with families. She has worked as a classroom teacher at church, in private and public schools, and as a homeschooler. Amanda and Clint live with their four sons in Costa Mesa, CA.


Jeff mercer

lead musician

Jeff and his wife Carmen are both teachers and, along with their two daughters, love being a part of Redeemer. Jeff graduated with a degree in Music Education from California Baptist University. He has been teaching music since 2008 and involved in music ministry since 2003.

John Detrich Photo.jpeg

john detrich

Youth Ministry Coordinator

John and Katie moved to Orange County from Santa Barbara shortly after getting married in 2017. John received a B.A. in History in 2016 from Westmont College and currently works in real estate development. His experience also includes work as an ocean adventure guide, camp counselor, and youth ministry leader. John enjoys hanging out with young people and is passionate about the Reformed faith. His hobbies include surfing, reading (mostly non-fiction), and spending time with friends and family.


Danielle Smith

Church Administrator

Danielle grew up in Sydney, Australia, and moved to Northern California to attend San Jose State University. She graduated with a B.S. in Exercise Physiology as she was a competitive swimmer growing up and has always loved being involved with sports. She lives in Newport Beach with her husband Scott and their twin boys. She loves volunteering at her children’s school, going to the beach, and being outside and active with her family.   


Drew Duncan

Cameron Moore

Rob Mouw


Andrew Evans

Mike Maxwell

Larry Wormald


Christie Brewer

Nancy Cox

Stephanie Handley

Anita Regehr