Johannes is a qualified Registered Nurse (Adult Nursing) and completed his training in Germany in 1998. Since the year 2000, he has worked in several UK hospitals within Intensive Care Units and has gained extensive experience in different roles.

Initially, he completed his specialist clinical training in Intensive Care while working as a clinical nurse at Guy's & St Thomas' NHS Foundation Trust followed by the successful achievement of a BSc (Hons) from Southbank University. He further completed a mentorship program and gained a Diploma in Tropical Nursing from the London School of Hygiene & Tropical Medicine. In 2008, he started his MSc in Health Policy, Planning and Financing at the London School of Economics & Political Sciences, while also working as a Senior Audit Nurse at St George's NHS Foundation Trust collaborating with the Intensive Care National Audit and Research Centre (ICNARC). After the completion of this program he co-developed a local reseach team, gaining fundamental and specialst knowledge in the implementation and completion of clinical trials within anaesthesia and critical care as part of the National Institute for Healthcare Research (NIHR) portfolio.

Since 2016 he has worked as a Senior Lecturer at St George's University of London before joining the University of Brighton in 2021.

Johannes' research interests include primarily the subject area of Intensive Care with a focus on outcome and process managment of patients admitted and discharged from Intensive Care Units. He also has develped expertise in family engagement practices that influence patient progression beyond their Intensive Care Unit stay. He has presented at international conferences and has written and co-authored several scientific studies and book chapters.

As an accredited fellow in higher education, Johannes' primary teaching responsibilities include the specialist training of Intensive Care nurses and leading the disseration module for the BSc Professional and Clinical Practice. He applies a variety of teaching approaches in a mostly collaborative way, such as scenario-based learning and critical appraisal, utilising e-learning techniques to involve students in a multitude of different didactic approaches.

During the Coronavirus pandemic, he returned to the clinical side predominantly teaching nurses the skills required to safely look after critically ill patients. He was heavily involved in an World Health Organisation (WHO) sponsored international training program upskilling clinical staff for redepolyment to intensive care areas using virtual and face-to-face approaches.