
Lorin Gresser
Chief Executive Officer

Lorin Gresser
Chief Executive Officer
Lorin founded Dem Dx in 2015 after graduating from medical school and has been the CEO of Dem Dx ever since. As well as her medical degree from King's College London she has a MA in Natural Sciences from Cambridge University and an MBA from Harvard University.

Michael Steel
Director

Michael Steel
Director
Following a successful career in strategy consulting, Michael founded Greenbrook Healthcare in 2006 and grew it to become the largest provider of NHS urgent treatment centres in the country. In 2019, the Greenbrook business was successfully sold to Totally plc with £40m+ turnover, 700+ staff and a reputation for high quality and safe service provision. Michael holds an MBA from INSEAD and an MPhil. in Economics from Oxford University.

Dr. Sally Johnson
Director

Dr. Sally Johnson
Director
Sally is a practicing GP with 30 years experience in the NHS. Alongside her clinical roles she has worked as the Chief Medical Officer of NHS and International Private primary and urgent care organisations. She has expertise in developing and delivering high quality, innovative and safe services. Her interests include pathway innovation, clinical governance, telemedicine, regulatory compliance and workforce development.
As well as supporting Dem Dx Sally is a practicing GP, CQC inspector and Medical Examiner.

Dr. Mariane Melo
Chief Medical Officer

Dr. Mariane Melo
Chief Medical Officer
Mariane founded the first spin-off of her university and several awards including competitions in Finland and MIT. She holds an MBBS, Federal University of Minas Gerais Brazil and King's College London, UK.

Rachel Gregg
Clinical Relationship Manager

Rachel Gregg
Clinical Relationship Manager
Rachel has 7 years experience in clinical nursing. She has worked in the Emergency Department for the majority of her career where she was a senior charge nurse, she also worked for London's Air Ambulance with the Physician Response Unit and has experience working in the Middle East both in the Emergency department and in the prehospital setting, for the FIFA world cup, before joining Demdx. She brings her clinical experience to support platform users and to develop and maintain relationships with front line clinicians.

Dr. Camilo Brandao-De-Resende
Machine Learning Scientist

Dr. Camilo Brandao-De-Resende
Machine Learning Scientist
Camilo is a qualified Physician (Ophthalmologist, PhD), engineer and a specialist (MSc) with 10+ years of experience in applications of statistical learning and artificial intelligence in industry and academia. He has been a researcher at the Aeronautical Institute of Technology and the Federal University of Minas Gerais, Brazil, and Carnegie Mellon University, USA.

Chris Phillips
Lead Full-stack Developer

Chris Phillips
Lead Full-stack Developer
Chris is a full-stack programmer at Dem Dx. He holds a BSc in Business and in a former career was a producer with 10+ year career in the media industry.

Jovin D'Costa
Test Manager

Jovin D'Costa
Test Manager
Jovin has 14+ years of experience with over 4 years of project and application delivery prior to joining Dem Dx. Jovin also has a BSc in Computer Systems and a PGDiploma in Network Systems Engineering from the University of Plymouth.

Sean Cregg
Clinical Relations Ambassador

Sean Cregg
Clinical Relations Ambassador
Sean has 10 years experience in nursing. He has worked in cardiac and acute care, forensic nursing and also as an NMC Competence Assessor before joining DemDx. He brings clinical experience to support platform users and to develop and maintain relationships with front line clinicians.

Ilya Ilin
Full-stack Developer

Ilya Ilin
Full-stack Developer
Ilya started developing Web applications with Rich Internet Applications in 2007. In 2010 he was working on mobile apps. In 2016 he became a full-stack developer. He loves writing code and is particularly keen on automated testing.

Kauser Hussain
Director of Business Development

Kauser Hussain
Director of Business Development
Kauser has a background in science and healthcare and has over 10 years experience within the biotechnology field in a senior leadership capacity where she spearheaded strategic growth for the business and expanded market share within the NHS and private sector. Responsible for overseeing business development for the UK and managing roll out to partners in the Middle East, Asia and Europe. She also designed and managed clinical validation studies focusing on stem cells, one of which was presented at the European Society for Blood and Marrow Transplantation (EBMT).
She is a proactive leader who is commercially driven and has an entrepreneurial mind-set with demonstrable expertise achieved in product optimisation, brand building and marketing campaigns.

Elsa Lee
Project Manager

Elsa Lee
Project Manager
Elsa is a clinical researcher and project manager for product development. Elsa is completing medical training at King’s College London having received multiple research scholarships and holds an MSc in Ophthalmology from University College London and Moorfields Eye Hospital.
Our Team

Lorin Gresser
Chief Executive Officer
Lorin founded Dem Dx in 2015 after graduating from medical school and has been the CEO of Dem Dx ever since. As well as her medical degree from King's College London she has a MA in Natural Sciences from Cambridge University and an MBA from Harvard University.

Steve Varley
Chief Technology Officer
Steve started developing software from an early age of 16, writing machine code algorithms for home computers to extend the core functionality and provide such things as high-resolution screen dumps. He now has over 35 years experience in open systems software architecture, design, and development, including 10+ years in mobile app development. Steve holds a BA in Computing Science from Teesside University. He is passionate about building great tech teams where people love to work.

Michael Steel
Director
Following a successful career in strategy consulting, Michael founded Greenbrook Healthcare in 2006 and grew it to become the largest provider of NHS urgent treatment centres in the country. In 2019, the Greenbrook business was successfully sold to Totally plc with £40m+ turnover, 700+ staff and a reputation for high quality and safe service provision. Michael holds an MBA from INSEAD and an MPhil. in Economics from Oxford University.

Dr Sally Johnson
Director
Sally is a practicing GP with 30 years experience in the NHS. Alongside her clinical roles she has worked as the Chief Medical Officer of NHS and International Private primary and urgent care organisations. She has expertise in developing and delivering high quality, innovative and safe services. Her interests include pathway innovation, clinical governance, telemedicine, regulatory compliance and workforce development.
As well as supporting Dem Dx Sally is a practicing GP, CQC inspector and Medical Examiner.

Dr Mariane Melo
Chief Medical Officer
Mariane founded the first spin-off of her university and several awards including competitions in Finland and MIT. She holds an MBBS, Federal University of Minas Gerais Brazil and King's College London, UK.

James McAllister
Lead Full Stack Developer
James has over 20 years experience as a web developer across multiple industries. Until recently, he shared this experience as a teacher at Constructor Labs on their JavaScript Coding Bootcamps.

Dr Camilo Brandão-de-Resende
Artificial Intelligence Specialist
Camilo is a qualified Physician (Ophthalmologist, PhD), engineer and a specialist (MSc) with 10+ years of experience in applications of statistical learning and artificial intelligence in industry and academia. He has been a researcher at the Aeronautical Institute of Technology and the Federal University of Minas Gerais, Brazil, and Carnegie Mellon University, USA.

Chris Phillips
Full-stack developer
Chris is a full-stack programmer at Dem Dx. He holds a BSc in Business and in a former career was a producer with 10+ year career in the media industry.

Jovin D'Costa
Test Manager & Project Manager
Jovin has 14+ years of experience with over 4 years of project and application delivery prior to joining Dem Dx. Jovin also has a BSc in Computer Systems and a PGDiploma in Network Systems Engineering from the University of Plymouth.

Sean Cregg
Clinical Relations Ambassador
Sean has 10 years experience in nursing. He has worked in cardiac and acute care, forensic nursing and also as an NMC Competence Assessor before joining DemDx. He brings clinical experience to support platform users and to develop and maintain relationships with front line clinicians.

Ilya Ilin
Full-stack Developer
Ilya started developing Web applications with Rich Internet Applications in 2007. In 2010 he was working on mobile apps. In 2016 he became a full-stack developer. He loves writing code and is particularly keen on automated testing.