Our team

Our unique combination of apps are designed using our unique insight and clinical experience. We work towards clinician-led digitally enabled care, empowered and engaged patients and sustainable healthcare.

Meet the team

The Definition Health team is made up of experienced professionals within the healthcare sector offering unique clinical experience, a dedicated Account Management and Sales Department as well as an expert IT Development team.

Working together to bring in first-hand experience of patient and hospital needs with extensive IT expertise, our products are at the cutting edge of Digital Healthcare and offer the definition of an end-to-end patient pathway, that covers consultancy, pre-operative assessment, recovery & discharge.

Sandeep Chauhan
CEO & Co-Founder
Sandeep Chauhan MBBS FRCS

“A wise teacher once told me that if you let patients tell you their story you will learn everything, but leave no patient behind irrespective of age, colour, education or digital ability. We have the gift to combine clinical and digital skills to transform health services for patients and providers – so join us on the journey.”

Sandeep has been recognised as a National Innovation Fellow, is a practising Hospital Consultant with more than 16 years of experience and holds a future technology consulting role for a major global healthcare company.

Dr Rosie Scott
Medical Director & Co-Founder
Dr Rosie Scott MBBS FRCR

“Being able to use our skills to make a difference in healthcare really does matter. Working with a brilliant team of healthcare professionals to channel their ideas to create digital products that transform people’s lives has been one of the highlights of my career.”

Rosie has over 14 years of experience as a Consultant MSK Radiologist working within Private and NHS hospital trusts.

Nick Finch
Chief Technology Officer
Nick Finch

“Innovation in cloud computing and data analytics continues to progress rapidly. Building products on these evolving capabilities that really make a difference to patients and healthcare providers is extremely motivating. I am excited to be able to deploy my knowledge and experience while working with a talented team to deliver outstanding technology solutions”

Nick has over 20 years of experience in a broad range of technical and leadership roles across software engineering, information security, cyber, infrastructure and data analytics.

Dominic Charles
Chief Financial Officer
Dominic Charles

I am thrilled to join the Definition Health team and look forward to contributing to our mission of transforming surigcal care. I am eager to work alongside such a talented group of professionals. Our collective efforts will not only drive the company's success but also make a tangible impact on the lives of patients and providers."


Dominic, a Fellow Chartered Accountant  with the Institute of Chartered Accountants in England and Wales, brings deep financial and business expertise, having worked with blue-chip companies and high-growth, innovative organisations, including PwC, JPMorgan, and BlackRock.

Dame Jackie Daniel
Healthcare Advisor
Dame Jackie Daniel

I have been on a career-long mission to Improve Care and experience for Patients. It was an easy decision to join Definition Health as Healthcare Advisor. I greatly admire what they are doing and, more importantly, how they work. Our values align, particularly around our shared ambition for digitisation, personalisation, and joined-up care.

Jackie began her NHS professional career as a nurse before moving into NHS management. She has been a Chief Executive Officer for 22 years, leading acute, mental health and specialist Trusts.

Crystelle Waters
Chief Digital Nurse
Crystelle Waters

“I find it wonderfully exciting that I can utilise my clinical knowledge and expertise, accrued over 20 years of nursing and management in healthcare and collaborate with the Definition Health team to transform the healthcare journey that patients experience.”

Harrison Gaiger
Marketing Director
Harrison Gaiger

“It’s incredibly exciting to be part of a team at the forefront of transforming surgical patient pathways. I am delighted to be able to utilise my knowledge and expertise to continue developing the Definition Health brand, broaden our global reach, and strengthen our reputation as patient-centric innovators.”

Harrison has over a decade of marketing and communications experience across the pharmaceutical, health, and life sciences industries.

Angela Sommerford
UK Implementation and
business operations Manager
Angela Sommerford

“I have a unique insight into how our digital solutions can successfully transform hospital processes having worked in the hospital where Definition Health first introduced LifeBox. I want to continue helping others to experience the same positive outcome, to reach their goals of providing safer care and improved patient experience.”

Angela Sommerford
Senior Implementation Manager
Angela Sommerford

“I have a unique insight into how our digital solutions can successfully transform hospital processes having worked in the hospital where Definition Health first introduced LifeBox. I want to continue helping others to experience the same positive outcome, to reach their goals of providing safer care and improved patient experience.”

Nathan Bourn
Digital Media Designer
Customer Success
Nathan Bourn

“Utilising my background in media and communication to help create something that benefits so many people is a truly exciting opportunity. Supporting patients and hospital staff along this journey gives me a unique insight into how we can continue developing and growing as a team to deliver more innovations in the future.”

Vicky Taylor (1)
Product Manager
Vicky Taylor

“It is a great privilege to help healthcare services embrace digital transformation to bring focus back to what matters most – patient care. Bringing a user-first approach to product development sets the patients and our hospital users front and centre of my mind with every step of our product development journey.”

Vicky has over 15 years experience in digital product, marketing and content development in industries including international higher education, event management and healthcare.

Josh Hellawell
Back-end Developer
Josh Hellawell

“It is incredibly motivating to be part of such a talented team revamping the way we use healthcare. Building solutions which help thousands of people is something that really inspires me. I’m excited to continue learning more about the world of healthcare, and where improvements can be made.”

Amy Martens
Senior Product Designer
Amy Martens

“It’s a great privilege to be designing products that deliver innovation and value in healthcare as it’s an area relevant to so many people’s lives. Design can help to shape the best possible experience for both patients and clinicians to achieve positive outcomes, which feels hugely motivating and rewarding.”

Amy has over 15 years experience designing SaaS products across property, finance and marketing technology.

Henrik Gundersen
Product Owner
Henrik Gundersen

“I love being part of a team that builds products that will help people and make their lives easier. That I can do so in the healthcare industry is very exciting, and I’m really looking forward to helping the team to continue to deliver solutions that improve patient experiences.”

Simon Hawkins
Specialist Nurse
Implementation Manager
Simon Hawkins

“As a Digital Nurse with 6 years of medical, surgical and pre-assessment experience I’m excited to work with healthcare professionals and show them how digital solutions can improve their own care settings whilst passing on the knowledge and experience Definition Health products gave me within mine!”

Jan Gosiewski
Head of Data Science, R&D
Jan Gosiewski

“I’ve always been passionate about healthcare and technology. At Definition Health we have a diverse team and an exciting product to make a lasting impact. I’m excited about working with our clinical partners to develop predictive capabilities improving patient outcomes.”

Rahul Lamba
Back-end Developer
Rahul Lamba

“With over 10 years of experience in software development across different domains. I love working on complex and intellectually stimulating coding problems."

James Farrant-Jayawant
Data Scientist
James Farrant-Jayawant

“It’s incredibly exciting to be at the forefront of integrating AI into healthcare. The potential to enhance processes and outcomes is limitless. Working with a tight-knit and deeply passionate team, all focused solely on the best outcomes for patients, is exceptionally rewarding.”

Nick Brockett
Back-end Developer
Nick Brockett

“The team skills that I hold and cherish the most is our ability to listen carefully, to recognise an opportunity, communicate effectively, pay attention to detail and to deliver on our promise.”

Dave Mackintosh
Full-stack Developer
Dave Mackintosh

“I’ve used technology to help improve people’s lives from hardware to product design to architecture and software development over the last 15 years. It’s endlessly rewarding being able to facilitate the full stack to help a smart business modernise such a core industry to society.”

Jeff S
SENIOR DEVOPS ENGINEER
JEFF SHEPHERD

Delivering technology with positive societal impact has always been a driving force for me. Now having the opportunity to combine my expertise in developing and operating cloud platforms with an innovative healthcare product is extremely exciting. Additionally, working with a skilled and friendly team of people is important in the remote working environment and makes the work so much more rewarding.

Sunitha Vallabhaneni
DevOps Engineer
Sunitha Vallabhaneni

“I love the process of automation to improve company’s workflows, increase productivity, reduce mistakes, and control all the processes of the business in real time.”

Kali1
SENIOR FRONT-END DEVELOPER
JANUSZ 'KALI' KALISZCZAK

“I’m passionate about accessibility and designing user interfaces that are both intuitive and comfortable to use. I’m always driven to challenge any painful status quo to ensure that users have a seamless experience and are satisfied with the best product possible.”

Dan Castro Harman
Sales Director
Daniel Castro Harman

"I’ve always been passionate about how innovative solutions can empower people to take control of their healthcare journey. At Definition Health, I’m thrilled to play a key role in bridging the gap between our developers and clinical end users, making sure we create a platform that truly works for both patients and healthcare providers."

Dan has over 20 years of healthcare sales experience most of which was in the operating theatre environment.

CEO & Co-Founder
Sandeep Chauhan
Medical Director & Co-founder
Dr Rosie Scott
Chief Technology Officer
Nick Finch
Chief Financial Officer
Dominic Charles
Chief Digital Nurse
Crystelle Waters
Healthcare Advisor
Dame Jackie Daniel
Sales Director
Daniel Castro Harman
Marketing Director
Harrison Gaiger
UK Implementation and Business Operations Manager
Angela Sommerford
Specialist Nurse, Implementation Manager
Simon Hawkins
Digital Media Designer, Customer Success
Nathan Bourn
Product Manager
Vicky Taylor
Senior Product Designer
Amy Martens
Product Owner
Henrik Gundersen
Head of Data Science, R&D
Jan Gosiewski
Data Scientist
James Farrant-Jayawant
Back-end Developer
Nick Brockett
Full-stack Developer
Dave Mackintosh
Back-end Developer
Rahul Lamba
Senior DevOps Engineer
Jeff Shepherd
Back-end Developer
Josh Hellawell
Senior Front-end Developer
Janusz 'Kali' Kaliszczak

Our Leadership Team

CEO and Co-Founder

Sandeep Chauhan MBBS FRCS FRCS

“A wise teacher once told me that if you let patients tell you their story you will learn everything, but leave no patient behind irrespective of age, colour, education or digital ability. We have the gift to combine clinical and digital skills to transform health services for patients and providers – so join us on the journey.”

Sandeep has been recognised as a National Innovation Fellow, is a practising Hospital Consultant with more than 16 years of experience and holds a future technology consulting role for a major global healthcare company.

Medical Director and Co-Founder

Dr Rosie Scott MBBS FRCR

“Being able to use our skills to make a difference in healthcare really does matter. Working with a brilliant team of healthcare professionals to channel their ideas to create digital products that transform people’s lives has been one of the highlights of my career.”

Rosie has over 14 years of experience as a Consultant MSK Radiologist working within Private and NHS hospital trusts.

CTO

Nick Finch

“Innovation in cloud computing and data analytics continues to progress rapidly. Building products on these evolving capabilities that really make a difference to patients and healthcare providers is extremely motivating. I am excited to be able to deploy my knowledge and experience while working with a talented team to deliver outstanding technology solutions”

Nick has over 20 years of experience in a broad range of technical and leadership roles across software engineering, information security, cyber, infrastructure and data analytics.

Our Advisory Team

Healthcare Advisor

Dame Jackie Daniel

“I have been on a career-long mission to Improve Care and experience for Patients. It was an easy decision to join Definition Health as Healthcare Advisor. I greatly admire what they are doing and, more importantly, how they work. Our values align, particularly around our shared ambition for digitisation, personalisation, and joined-up care.”

Jackie began her NHS professional career as a nurse before moving into NHS management. She has been a Chief Executive Officer for 22 years, leading acute, mental health and specialist Trusts.

Our Sales and Implementation Team

Marketing Director

Harrison Gaiger

“It’s incredibly exciting to be part of a team at the forefront of transforming surgical patient pathways. I am delighted to be able to utilise my knowledge and expertise to continue developing the Definition Health brand, broaden our global reach, and strengthen our reputation as patient-centric innovators.”

Harrison has over a decade of marketing experience across the pharmaceutical, health, and life sciences industries.

Chief Digital Nurse

Crystelle Waters

“I find it wonderfully exciting that I can utilise my clinical knowledge and expertise, accrued over 20 years of nursing and management in healthcare and collaborate with the Definition Health team to transform the healthcare journey that patients experience.”

Senior Implementation Manager

Angela Sommerford

“I have a unique insight into how our digital solutions can successfully transform hospital processes having worked in the hospital where Definition Health first introduced LifeBox. I want to continue helping others to experience the same positive outcome, to reach their goals of providing safer care and improved patient experience.”

Specialist Nurse & Implementation Manager

Simon Hawkins

“As a Digital Nurse with 6 years of medical, surgical and pre-assessment experience I’m excited to work with healthcare professionals and show them how digital solutions can improve their own care settings whilst passing on the knowledge and experience Definition Health products gave me within mine!”

Digital Media Designer & Customer Success

Nathan Bourn

“Utilising my background in media and communication to help create something that benefits so many people is a truly exciting opportunity. Supporting patients and hospital staff along this journey gives me a unique insight into how we can continue developing and growing as a team to deliver more innovations in the future.”

Our Product and Development Team

Product Manager

Vicky Taylor

“It is a great privilege to help healthcare services embrace digital transformation to bring focus back to what matters most – patient care. Bringing a user-first approach to product development sets the patients and our hospital users front and centre of my mind with every step of our product development journey.”

Vicky has over 15 years experience in digital product, marketing and content development in industries including international higher education, event management and healthcare.

Product Designer

Amy Martens

“It’s a great privilege to be designing products that deliver innovation and value in healthcare as it’s an area relevant to so many people’s lives. Design can help to shape the best possible experience for both patients and clinicians to achieve positive outcomes, which feels hugely motivating and rewarding.”

Amy has over 15 years experience designing SaaS products across property, finance and marketing technology.

Product Owner

Henrik Gundersen

“I love being part of a team that builds products that will help people and make their lives easier. That I can do so in the healthcare industry is very exciting, and I’m really looking forward to helping the team to continue to deliver solutions that improve patient experiences.”

Head of Data Science, R&D

Jan Gosiewski

“I’ve always been passionate about healthcare and technology. At Definition Health we have a diverse team and an exciting product to make a lasting impact. I’m excited about working with our clinical partners to develop predictive capabilities improving patient outcomes.”

Data Scientist

James Farrant-Jayawant

“It’s incredibly exciting to be at the forefront of integrating AI into healthcare. The potential to enhance processes and outcomes is limitless. Working with a tight-knit and deeply passionate team, all focused solely on the best outcomes for patients, is exceptionally rewarding.”

Back-end Developer

Nick Brockett

“The team skills that I hold and cherish the most is our ability to listen carefully, to recognise an opportunity, communicate effectively, pay attention to detail and to deliver on our promise.”

Back-end Developer

Brent Murphey

“I enjoy seeing my engineering work helping patients to communicate with hospitals. Having clinicians use our system over legacy paper-based workflows is very rewarding.”

Front-end Developer

Shane Hudson

“I love designing and delivering solutions that are intuitive and fully meet the needs of all our customers. My background in website accessibility allows me to think differently about our customer needs and shape our solutions to ensure ‘digital’ is available to all.”

Full-Stack Developer

Dave Mackintosh

“I’ve used technology to help improve people’s lives from hardware to product design to architecture and software development over the last 15 years. It’s endlessly rewarding being able to facilitate the full stack to help a smart business modernise such a core industry to society.”

Back-end Developer

Rahul Lamba

“Over 10 years of experience in software development across different domains I love working on complex and intellectually stimulating coding problems. “

Back-end Developer

Josh Hellawell

“It is incredibly motivating to be part of such a talented team revamping the way we use healthcare. Building solutions which help thousands of people is something that really inspires me. I’m excited to continue learning more about the world of healthcare, and where improvements can be made.”

DevOps Engineer

Sunitha vallabhaneni

“I love the process of automation to improve company’s workflows, increase productivity, reduce mistakes, and control all the processes of the business in real time.”

See our apps in action

For more information about Definition Health and how our personalised digital healthcare solutions can benefit your organisation, please contact us using the form below. Whether you're looking to enhance patient care, streamline operations, or stay ahead in healthcare, we're here to help. Let's discuss how our innovative apps can support your goals.