OUR STAFF

  • KRISTA ZIMMERMAN

    Senior Pastor

    I am excited to have joined the ministry at St. Mark's beginning in March 2025!  St. Mark's is a congregation that is serious about living our mission to "share Christ's abundant love with each other and the world."  This year marks my 15th year of ordained ministry.  Previously, I served as the Interim Lead Pastor at Bethlehem Lutheran Church in St. Charles, IL, Associate Pastor at Mount Pleasant Lutheran Church in Racine, WI and Pastor at United Lutheran Church in Rockford, IL.  I graduated from the Lutheran School of Theology at Chicago in 2010 with my Master of Divinity.  In 2006 I graduated from Houghton University in New York State with a Bachelor of Arts in Communications.  I grew up in Rochester, NY before coming to the Midwest.  In my spare time, I enjoy reading, sending snail mail and spending time with my family.  I am thankful to have my immediate family in the area. I love being a pastor but my favorite title is aunt!  Click here to email Pastor Krista.  Phone: 630-897-6891, ext. 101

  • KRISTIN YOUNG

    DIRECTOR OF WORSHIP & fine ARTS

    Called to St. Mark’s in 1996 to lead this church’s song, it is pure joy to share Christ’s abundant love through the gift of music. The song here takes many forms and is expressed in many ways: from the classics, traditional choirs, and sacred cantatas to Dixieland, jazz, and contemporary praise teams and worship bands. It is always fun and inspiring! Working with students, singers, and musicians, teaching musical concepts, and preparing and presenting great music that draws people to God and deepens their faith are my passion. I graduated from DePaul University with a degree in piano performance and a minor in voice and conducting. I also enjoy traveling, the out-of-doors, hiking, riding bikes, fishing, gardening, and cooking. My husband, Bruce, and I enjoy living in the Midwest, where we have raised our four children.

    Click here to email Kristin. Phone: 630-897-6891, ext 103

  • JONI ACKLEY

    OFFICE & Communications MANAGER

    I’ve been the Office Manager at St. Mark’s since April 2022 and took on the Communications Manager position in October of 2023. I’ve lived in Aurora for almost 23 years and I recently became a first time home owner. I have a 15 year old cat named Brat, and a 7 year old Rottweiler named Reaper. Click here to email Joni.  Phone: 630-897-6891, ext 100

  • AL LETTOW

    FACILITY MANAGER

    I was born and raised in this area (Chicago and Elgin) and went to the University of Wisconsin in Madison, where I was a member of the Badger football team and met my wife, Vicki. We married in 1969 and have three adult children and seven grandchildren. I've migrated through two careers, from owning a ServiceMaster franchise for 15 years, to working for AT&T for 25 years. Now, my "third career" is helping keep the St. Mark's building running and working well. Vicki and I have been members of St. Mark's since 1974, and have been involved in multiple projects over the years. During my free time, I keep active hiking, biking, weight training, competitive stair climbing, and traveling in the Caribbean, Europe, and the USA.

    Click here to email Al. Phone: 630-897-6891, ext 106

  • JOHN THEMANSON

    FINANCE ADMINISTRATOR

    I was born in Monmouth, Illinois, and raised in Kewanee. I served in the Air Force from 1963 through 1967, and then graduated from Illinois State with a degree in applied computer science. When my wife, Sandy, and I came to Aurora in 1986, we found St. Mark’s. It’s amazing to see how this church has grown since we joined and gratifying to know that my family and I have been a part of that growth. I’m a widower with two adult daughters, Anna and Lauren, father-in-law to Victor and Michael, and grandpa to Bridget. In addition to being on staff at St. Mark’s, I am a member of The Lion’s Voice Choir. I enjoy time with my family, classical music, all sorts of puzzles, and travel. Click here to email John. Phone: 630-897-6891, ext 105