Our humanitarian fellows

Each of our accelerated innovation collaborations involves research fellows from low- and middle-income countries. 

Alongside pursuing their own research interests, they provide important national and regional insights in developing UKHIH projects.

David Garcia

Satellite technology for humanitarian decision making

David Garcia is a geographer and urban planner with experience working in cities and communities in the Philippines affected by natural disasters and conflict. Currently based in New Zealand, David is working on a Geographic Information Science PhD, focusing on an ethnography of crowdsourcing and mapping by working on OpenStreetMap in the Pacific region.

Stella Chelangat Mutai

Satellite technology for humanitarian decision making

Stella is a geospatial specialist with expertise in using satellite applications for climate change, humanitarian emergencies, food security, and disaster risk management. She has an MSc in geoinformation science and earth observation from the University of Twente, Netherlands, and works as a GIS consultant for the UN World Food Programme. As a UKHIH fellow, working on the Beyond Borders report, Stella identified and mapped key stakeholders in humanitarian satellite applications in Eastern Africa, highlighting achievements and gaps in the use of satellites in humanitarian decision making and policymaking in the region, and suggesting possible uses for satellite applications.

Pius Ngwa

Collective crisis intelligence

Pius is a data scientist with an MSc in data science, and a background in teaching and software engineering. He is interested in natural language processing and using AI for social good. As a UKHIH fellow, Pius helped develop an AI prototype to fight disinformation at community level, curating and processing data, and leading the unsupervised approach of the AI tool.

Saurav Poudel

Collective crisis intelligence

Saurav is a data science teacher with experience in the health, humanitarian and social science domains. As a UKHIH fellow, he worked on a project to create a machine learning model to optimise the distribution of relief items in crisis situations.

Princewill Achem Nkongho

Citizen engagement and technology in crisis settings

Princewill is a development evaluation specialist with expertise in monitoring and evaluation, humanitarian relief, risk communication, health promotion and social media monitoring. His experience spans WHO HQ, the IFRC Africa Regional Office, Catholic Relief Services, the Malaria Consortium and GIZ. As a UKHIH fellow, he worked with the Cameroon Red Cross Society to support humanitarian emergency response through using AI to improve community feedback mechanisms.

Isobel Marks


Isobel Marks is a core surgical trainee at Great Ormond Street Hospital and a Royal College of Surgeons of England research fellow in humanitarian surgery, working in collaboration with the newly established Global Surgery Policy Unit. She previously worked as a paediatric surgical outcomes fellow at Massachusetts General Hospital, and a research associate with the Program for Global Surgery and Social Change at Harvard Medical School. She was also a junior trauma fellow at St Mary’s Hospital, London. Isobel coordinated the International Federation of Medical Students' Association Global Surgery Working Group for two years, and is a founder and former chair of InciSioN, the International Student Surgical Network. Within the Humanitarian Surgery Initiative, Isobel is leading a qualitative study examining the experiences of surgeons working in conflict areas in the Middle East and North Africa.

Surgeon Lt Cdr Gerard McKnight


Gerard is a Royal Navy general surgery ST4, interested in trauma, emergency general surgery and global surgery. He has deployed across the world, including to the British Virgin Islands as part of the UK’s humanitarian response to Hurricane Irma in 2017. As a Royal College of Surgeons of England Humanitarian Surgery Initiative fellow, Gerard is researching technology to improve training in low-resource settings.

Marcella Ryan-Coker


Marcella is an orthopaedic and trauma surgery resident in Nairobi, Kenya, previously working as a surgical medical officer in Freetown, Sierra Leone, with humanitarian NGO Emergency. She has an MSc in global health and development from University College London, and the Edinburgh surgical sciences qualification from the University of Edinburgh; and completed a course in global surgery at the University of Oxford. Marcella is the immediate past chair of InciSioN, the International Student Surgical Network (Sierra Leone), and an outgoing member of the Gender Equity Initiative in Global Surgery Research Council. As a Humanitarian Surgery Initiative fellow, Marcella’s research focuses on the cost of surgical training for trainees in sub-Saharan Africa. She contributes to several research projects, including a multinational survey to evaluate the efficacy of video learning in surgical education, defining humanitarian surgery, and creating an online course provider directory for global, humanitarian and trauma surgery.

Ahmed S. Almaqadma


Ahmed graduated in medicine and surgery from Misr University for Science and Technology, Egypt, developing an interest in reconstructive plastic and orthopaedic surgery during his internship at Palestinian Ministry of Health hospitals. He later worked as a surgeon in the Al-Shifa Hospital plastic surgery department and is currently a junior surgeon in the orthoplastics department of the MSF unit at Al-Awda hospital. Ahmed has completed the Medical Aid for Palestinians-Incision Academy general surgery programme, which is accredited by the Royal College of Surgeons of England. His research focuses on patient suffering caused by complex trauma morbidities. As Humanitarian Surgery Innovation fellow, Ahmed contributes to several research projects, including a multinational survey to evaluate the efficacy of video learning in surgical education in low- and middle-income countries, defining humanitarian surgery, and webinars featuring surgical voices from the global South.

Prof. Mohamed Youssef Seleem


Mohamed graduated from the Kasralainy School of Medicine at Cairo University in 1977, achieving a master's degree in general surgery in 1982 and doctorate in 1989. He has been performing laparoscopic and obesity surgeries since 1991. Mohamed was in charge of surgical training in the Egyptian Ministry of Health for five years, and has been head of continuing medical education in the Egyptian Medical Syndicate for 10 years. He has been a consultant for two Egyptian ministers and is a member of the Society of American Gastrointestinal and Endoscopic Surgeons' Global Affairs Committee. In the past 15 years, Mohamed has organised two conferences on medical practice in low-resource settings and ways to cut costs in obesity surgeries. His humanitarian journey started 20 years ago. Mohamed has been a team leader in more than 15 medical convoys in sub-Saharan African countries, and established a digital educational platform for patient education. As a Humanitarian Surgery Initiative fellow, Mohamed contributes to research, including webinars featuring voices from the global South. He also formed a group to study the possibility of remote training for surgical skills.

Raoof Ahmed Saleh


Raoof Ahmed is a general surgeon at Kilo hospital in Yemen’s southern Ibb governorate, with certificates in general surgery from the Yemeni Medical Council and Arab Medical Council. He has worked with MSF as a humanitarian surgeon since 2016 and in the past year has supported surgical teams in conflict areas in Yemen, performing trauma, vascular and reconstructive surgeries on the front line. As a Humanitarian Surgery Initiative fellow, Raoof contributes to research projects, including a study on the effect of conflict on pre-existing surgical workforces, a multinational survey to evaluate the efficacy of video learning in surgical education in low- and middle-income countries, defining humanitarian surgery, and webinars featuring surgical voices from the global South.

Tim Fabrice Tientcheu


Tim trained as a general surgeon at the University of Yaoundé I, Cameroon, and holds an MSc in global health and global surgery from King’s College London. He is a consultant general surgeon at the Central Hospital of Yaoundé, lecturing part-time in the Faculty of Health Sciences at the University of Bamenda; and has experience in delivering primary and emergency health care and managing public health projects in low-resource settings in Africa. Tim is global surgery lead with humanitarian NGO ASCOVIME, delivering humanitarian surgical care and coordinating the surgical simulation project. He is passionate about global surgery advocacy, building the National Surgical Obstetric Anesthesia Planning process and humanitarian health care. As a Humanitarian Surgery Initiative fellow, Tim contributes to research on the efficacy of digital innovations in surgical training in low- and middle-income countries.