Leadership

Marc Haunschild

Elder

Born in Marburg in 1977, I was raised in a Christian home within the Protestant Church in Gladenbach, Germany. I moved to Siegen, Germany to pursue my studies in computer engineering, where I later completed my PhD. During that time, I attended Calvary Chapel Siegen, where my faith truly came alive. It was also there that I met my wife, Susanna, and we married in 2002. We have four children. Today, I lead a team of software project managers working on medical devices. I have been serving as an elder since 2008.

Janos Barta

Elder

Born in Transylvania, Romania, in 1982, I grew up there and attended the Hungarian Reformed Church from childhood. I later met my wife, Ibolya, at the affiliated Christian school, and we have been married since 2011. We have two daughters. After completing my studies in education, I chose instead to pursue a technical and creative profession, and since 2008 I have been self-employed in advertising technology. I have been serving as an elder since 2015.

Martin Briel

Elder

Born in 1982 in Biedenkopf-Wallau, Germany, I was raised in a Christian Brethren congregation. I have been married to Kathrin since 2010, and we have two children. I studied industrial engineering and work as a quality engineer. I have been serving as an elder since 2020.

Jonas Häberle

Elder

Born in 1988 in Schwäbisch Hall, Germany, I was raised in a local Baptist Church. As a teenager, I came to experience the saving and transforming grace of the gospel. I have been married to my wife Elsa since 2012, and we have three children. I studied civil engineering and then spent nine years serving in Christian development work and church planting in South Asia. Since 2024, I have been serving full-time in our church, and since 2025 as an elder.