Pastor Joseph Tieku currently shepherds North York District, McKeown Worship Center. He has been a member of the Church of Pentecost since 1984. He was ordained as a Deacon in 1992 and an Elder in 1995 at Suame Assembly in the then New Tafo District, Kumasi, Ghana. After his appointment as an Elder, Pastor Tieku held additional positions in the Church of Pentecost: Local Financial Secretary, Building Committee Member, District Financial Secretary, Bible Studies Leader, Area Deacon, Area Secretary and National Deacon.  He was called and ordained as a Probationary Overseer in 2012, Overseer in 2014, and a Pastor in 2015.

Pastor Tieku attended (University of Professional Studies, Accra UPSA) University of Cape Coast, Ghana, and continued his education at London South Bank University in England where he obtained a Bachelor’s degree, Majoring in Accounting and Finance. He pursued the Association of Chartered Certified Accountants (ACCA) program at Financial Training Company and qualified as a Chartered Accountant 2004.  In November 2005, Pastor Tieku immigrated to join his family in Toronto, Canada and immediately enrolled in the Certified General Accountants (CGA) program, qualified and became a member in 2008. In 2009, Pastor became a Fellow in the Association of Chartered Certified Accountants (FCCA-United Kingdom, and also became Certified Professional Accountant (CPA) Ontario in 2014. Pastor Tieku completed his Masters in Theological Studies at Tyndale University, Toronto, Ontario in May 2020. 

Pastor Joseph Tieku is married to Jemima Tieku, who is a Registered Nurse and Nursing Educator. Mrs. Jemima Tieku holds a Bachelor of Science degree in Nursing (BScN) from the University of Ontario Institute of Technology, and a Master’s in Education in Adult Education (Med) from Yorkville University, New Brunswick. They have been blessed with three children – Priscilla Afua Benewa Tieku, Perez Kofi Tieku and Joseph Kwame Asiedu Tieku Jr.