Indonesian Board

Johan Setiawan is the Dean of Students and a faculty member at Bandung Theological Seminary (Sekolah Tinggi Teologi Bandung) in Bandung, Indonesia. He serves as the Director of the L.E.A.D. (Learning, Equipping, and Development) Center at the seminary and teaches courses in Hermeneutics, Discipleship, and Mission.

Johan is a co-founder and developer of the Kambium Discipleship Curriculum and Katalis Media & Literature, both dedicated to equipping the whole people of God for ministry and mission.

He holds a Master of Christian Ministry from Discipleship Training Centre, Singapore, and a Master of Theology in Transforming Culture and Societies from Bandung Theological Seminary, Indonesia.

Jessica Tanoesoedibjo is an entrepreneur, philanthropist, speaker and author, based in Jakarta, Indonesia. Having graduated with a Bachelor of Commerce from the University of New South Wales (UNSW) in 2014, and a Master in International Trade and Commerce Law from Macquarie University in 2015, Jessica felt called into the work of “full-time” ministry, and pursued seminary training at Biola University. She graduated with a Master of Arts in Biblical and Theological Studies in 2017, and followed the Lord’s leading to the mission field: the workplace. In 2020, Jessica also completed a Masters in Arts in Special Education.

Currently Jessica serves in a number of roles within her family business at MNC Group, overseeing the Financial Services, Philanthropy and Education portfolios of the company. Flowing from her love for Scripture, Jessica is the Next-Gen Representative at IllumiNations Indonesia, and is a part of the International Advisory Board for the Whole Word Institute (formerly 4.2.20 Foundation). She is also the Chair of the Honorary Board of Red Cross Indonesia, Central Jakarta.

Jessica is married to Jonathan Sariaatmadja, and the couple are blessed with a daughter named Julia Eden. Together, they started YSUS (Yayasan Saluran Unggul Sesama / Vessel Unto Others Foundation), an NGO focused at empowering people with disability in rural Indonesia.

Engeline Tjia Soesilo is a former executive for multinational retail companies in Indonesia. She has 26 years' experience working in consumer-goods’, foodservices and retail industries in Indonesia, mostly in brand management and marketing.

She currently serves as founder and advisor of Watermission Indonesia Foundation, independent consultant that focused on marketing and business management for some commercial, non-commercial entities including Christian organizations.
Engeline has strong passion to groom young entrepreneur and professionals in their business and career for Christ.

She earned her Magister in Management focused on Marketing from PPM School of Management, Magister of Art in Christian Ministry and Magister in Theology from Indonesia Reformed Seminary (STTRI).

Engeline is married to Rev. Jacob Soesilo, who leads a church congregation in Jakarta.

Peter Jacobs boasts a strong educational background, holding a Bachelor's degree in Law from the University of Indonesia, a Master of Public Administration from Saitama University Japan, a Doctorate in Economic Law from Padjadjaran University Bandung, and a Master of Arts in Leadership, Theology, and Society from Regent College Canada.

With expertise in economic and monetary policy communication, Peter Jacobs has extensive work experience, including over 31 years at Bank Indonesia. Currently, he serves as Commissioner at Komunal and AstraPay, as well as Executive Director at PT. Brief Indonesia.

Beyond his professional career, Peter Jacobs is actively engaged in community service as a Board Member at Perkantas Indonesia and a member of the Board of IFES Global, demonstrating his commitment to community development and public service in building future leaders.

Sutrisna is the Principal of Bandung Theological Seminary, Indonesia. In 2018 he founded MMin Marketplace program in this seminary, which continues to grow and receive positive responses from Christian professionals and entrepreneurs. He and his colleagues in BTS also developed Vocatio Marketplace Fellows program to help young workers have a theological foundation for their work, develop spirituality in their work life, and understand their calling and Gods’ mission through their work life. Previously he served students dan graduates with a campus ministry organization, Perkantas (IFES in Indonesia), in various capacities for more than 20 years, including the staff development secretary, and vice general secretary of the movement.

Sutrisna earned his PhD in Educational Studies from Trinity Evangelical Divinity School (TEDS). His doctoral research, “The Development of Vocational Stewardship Among Indonesian Christian Professionals: Spiritual Formation for Marketplace Ministry” is published by Langham Literature. He holds MDiv from Trinity Theological College, Singapore, and his Bachelor in Pharmacy from Padjadjaran University, Bandung.

Sutrisna is married to Lily Endang Joeliani, now have two adult children. Live in Bandung, Indonesia.

Yosafat Adrian Wiguna is one of the board members of Workplace Institute of Nusantara (WIN), a non-profit organization that serves faith and work movement in Indonesia. He joined this ministry since its inception in the late 2015, together with some friends from Inter-Varsity Indonesia (Perkantas). Most of the core team members of WIN are ex. Perkantas activists, where they have been involved in the ministry since students. This background makes WIN works very close with Perkantas in doing its workplace ministry, especially with the Graduates Center of Perkantas as well as alumni fellowship from several big cities in Indonesia.

He also serves as one of the board members of BPK PENABUR Jakarta, a non-profit Christian school organization which has 79 schools in Greater Jakarta area with about 30,000 students, for the period of 2018-2022 and 2022-2026. His main role is as the head of Strategic Development for the organization, besides some other roles that he holds.

Yosafat also serves as Chairman of SOLA SCRIPTURA, Annual Lectures on Biblical Studies. SOLA SCRIPTURA has invited some distinguished Biblical Scholars from USA and UK to conduct public lectures for seminary students as well as lay people. This ministry has been done in cooperation with some major theological schools from different denomination in Indonesia since 2008.

He serves at WIN, BPK PENABUR Jakarta and SOLA SCRIPTURA on a voluntary basis.

Currently, Yosafat runs his own business in Industrial Lubricants supply as authorized distributor in Indonesia for several international brands since 1999. He used to work for Pennzoil and Astra Honda Motor.

He earned his MBA from Monash University, Australia, and his Bachelor of Engineering from Faculty of Metallurgical Engineering, University of Indonesia.

Yosafat and his wife, Susi, lives in Jakarta and are active members of Indonesian Christian Church. They have two daughters: Alice and Nadine. Both are married, where Alice lives in Jakarta with her husband, Fabio and their daughter Aida; while, Nadine lives in Melbourne, Australia, with her husband Iain.

Yuzo Adhinarta is an ordained teaching pastor (2019) and a theologian specializing in Systematic Theology and Discipleship. Originally trained as a civil engineer, he pursued theological education in 1997 at Reformed Theological Seminary of Indonesia (STTRI, Jakarta), earning his Master of Divinity (M.Div.). From 2001 to 2003, he served at Gereja Kristen Abdiel (GKA) Gloria, Surabaya, as a youth minister before continuing his theological studies. He completed his Master of Theology (Th.M.) in 2005 and a Ph.D. in Systematic Theology in 2010, both at Calvin Theological Seminary, Grand Rapids, Michigan.

Since 2010, Yuzo has been serving as faculty and, since 2016, as Principal of Reformed Theological Seminary of Indonesia. A John Stott Ministries Scholar (Langham Scholar) since 2006, he was also commissioned as an endorsed missionary to Indonesia by Christian Reformed World Missions (CRWM) in 2010.

Yuzo is the founder of the i3D (Integrative-Dynamic Discipleship Development) Center and the author and developer of the i3D Discipleship Curriculum and Training. He is also a team member and developer of the A-B-L-E Discipleship Modules. In addition to his academic and pastoral roles, he regularly consults, coaches, and provides discipleship development training for churches and schools.

He is married to Yuliwaty Rukiah, and together they have two children.

Casthelia Kartika is the President of Amanat Agung Theological Seminary in Jakarta, Indonesia, and a committed scholar specializing in Church History and Christian Spirituality. She holds a Doctor of Theology from Lutheran Theological Seminary, Hong Kong, with a research focus on Origen’s spiritual reading of Scripture and prayer as divine pedagogy.

With decades of experience in theological education and ministry, she has been a full-time lecturer at Amanat Agung Theological Seminary since 2010. She previously served as a youth pastor for over a decade and is actively involved in various Christian organizations, including the Synod of the Christ Jesus Church, the Communion of Churches in Indonesia, Indonesian Bible Society, and the Scholar Leaders Women’s Peer Leader Forum (SL-WPLF). Recently, she serves as a mentor in the Executive Leadership Initiative project with Bosko Partners, guiding emerging theological education leaders in strategic and organizational leadership.

Her passion lies in shaping future Christian leaders through theological education, research, and pastoral mentorship. Through her scholarship and ministry, she remains dedicated to advancing Christian thought and leadership in Indonesia and beyond.