Our team

We’d love to introduce you to the people who make things happen – our management team, board, medical advisors and investors.

Our team

We’d love to introduce you to the people who make things happen – our management team, board, medical advisors and investors.

Our team

Frans Cromme


Frans joined ViCentra in May 2019. He has over 20 years of experience in medtech, pharmaceuticals and in vitro diagnostics with roles in marketing, R&D and general management. He has a PhD in oncology as well as an MSc in molecular biology. Frans has lived in a number of countries in Europe and Latin America and loves to climb mountains. Frans’ favourite thing about Kaleido? That it is truly designed to make life easier for people with diabetes, without compromise.

Leo Toole


Leo joined ViCentra in January 2023, bringing more than 25 years’ experience in the medical technology, pharmaceutical, and FMCG sectors. His experience includes building finance teams, completing public & private financing and executing several mergers & acquisition. From Ireland, he is a business graduate from Trinity College Dublin with an MBA from INSEAD. Leo is very motivated to deliver disruptive technology that improves lives. For fun, he helps coach his kids’ sports teams and goes hiking.

Sarah Lee

HR Manager

Travel lover Sarah joined ViCentra in 2015 and has been involved with our HR department from an early stage.  She has a 2:1 Honours degree in Law, a four year programme which integrated the LPC and gave her a practical and knowledgeable basis for her future in HR. Sarah’s favourite thing about Kaleido is the motivated, talented and fun people at ViCentra that are able to bring the full Kaleido experience to its customers.

Ruairi Duffy

VP of Research & Development

Ruairi joined ViCentra in 2019 and leads our R&D activities. Prior to this, Ruairi held senior positions in various pharma, medtech and product design organizations in multiple countries. Ruairi has a wealth of experience and a proven track record in medical device product design & development. He is a strong advocate for designing, and bringing to market, simple and intuitive medical products that allows users to live life on their terms: say hello to Kaleido! Outside of work, Ruairi enjoys sport, cooking and classic cars.

Tim Oakes

 CTO and Co-founder

As co-founder, we wouldn’t be where we are today without Tim. Tim is an award-winning design engineer with over seven years of experience in the medical device field, mostly related to drug delivery systems. Having grown up with a father with Type 1 diabetes, Tim has first-hand knowledge of the challenges of trying to fit medical devices into daily life. Tim’s ultimate goal for Kaleido? To keep things simple so Kaleido can make life easier for people with diabetes.


Sophia Lam

VP of Quality & Regulatory

Sophia joined ViCentra in 2019 with over 20 years of experience in Quality and Regulatory. Working mostly within the medtech industry, she has significant knowledge on regulatory filings, regulatory inspections and design controls. As a real foody Sophia likes to spend her spare time by going on culinary adventures with friends and family. The best thing about Kaleido for Sophia is that it is an easy to manage, small device which drastically improves the quality of life for people with diabetes.

Boris Weber

VP of Commercial

Boris joined ViCentra in early 2020. He has worked in the diabetes field for almost 20 years in various commercial roles, ranging from founding legal entities and launching new products, to new business model implementations and digital transformation. Boris has leadership experience working with multifunctional teams and spanning different countries. In his free time Boris loves spending time with his family and his dogs, and doing volunteer work. His favourite thing about Kaleido? That it’s designed for people – not for patients.


Pieter Van Hoof

 VP of Operations

Pieter joined ViCentra in July 2021 and is responsible for ViCentra’s Operations. Since the start of his career, Pieter has predominantly developed his Operations expertise working in the pharmaceutical, chemical and medical device industry assuming various increasingly more responsible roles in manufacturing, supply Chain and general management always with a focus on developing an effective and efficient Operations organization. Outside work he enjoys spending time with his family and getting together with friends for a good ride on the gravel bike and supporting his local football team.


Our board

Jan Keltjens

Chairman of the Board of Directors 

Jan currently serves as Chairman of the Board of Directors of both ViCentra and JenaValve Technologies, and previously NightBalance. In addition, he is associated with a number of venture capital funds. These include INKEF, NextGen Ventures and Brightlands Agrofood Fund.

Before that he was CEO of Sapiens Steering Brain Stimulation, Chairman and CEO of Endosense SA, Executive Chairman of Surpass Medical Ltd., President and CEO of AngioDynamics Inc. and CryoCath Technologies Inc.

 Jan also served as Worldwide General Manager at Cordis Neurovascular, as well as various global and regional leadership roles in Operations, R&D and Marketing at Cordis, Johnson & Johnson. Prior to this, Jan led R&D departments at Unilever.

Thijs Cohen Tervaert

Non-executive Board Member

Thijs Cohen Tervaert is a Director at INKEF. Thijs currently also serves on the board of Castor EDC (Netherlands). Prior to INKEF, Thijs was a strategy consultant at the Boston Consulting Group with a focus on health care and technology. He worked on projects for pharmaceutical companies, hospitals and insurers. During a one year secondment, Thijs helped to establish the Amsterdam Health and Technology Institute in 2014. Thijs is a medical doctor and graduated at Leiden University. He has also co-authored several scientific papers.

Anne Portwich

Non-executive Board Member

Anne Portwich, PhD, is a Partner of LSP and has been with the firm since 2001. Anne currently serves on the supervisory boards of Mint Solutions (Netherlands) and Neuravi (Ireland). Previous board positions include Sapiens Steering Brain Stimulation (acquired by Medtronic in 2014), ActoGeniX (acquired by Intrexon in 2015) and Nexstim (IPO in 2014). Anne is a jury member of New Venture, a business plan competition for start-up companies in the Netherlands as well as a member of the evaluation panel for Tekes’ Young Innovative Growth Companies (YIC) funding program in Finland. Anne obtained an MSc in biochemistry from the University of Hanover and received her PhD from the Max Planck-Institute of Marine Microbiology in Bremen.

Sonia Hallen

Non-executive Board Member

Sonia Hallen, PhD, is an Associate at LSP, having joined the firm in 2019. Prior to LSP, Sonia founded two companies: InfectDetect, a GSK-funded start-up focused in infectious disease diagnostics, and Digital Biosciences, an artificial intelligence-based clinical trial design platform. Prior to this, Sonia was a strategy consultant at Accenture UKI within the Life Sciences practice where she led operational and commercial strategy for major global pharmaceutical and biotechnology companies. Before joining Accenture, Sonia was a Stem Cell Scientist with the Commonwealth Scientific and Industrial Research Organisation, in Melbourne, Australia, where her research focused on rebuilding the heart with smart stem cell biomaterials. Sonia received a BEng in Chemical Engineering from McGill University (CA), an MSc in Biotechnology from the Ecole Polytechnique Fédérale de Lausanne (CH), and her PhD in Regenerative Medicine from Imperial College London (UK).

Linze Dijkstra

Non-executive Board Member

Linze Dijkstra is a managing partner at Health Innovations and has 20 years of experience in healthcare. Linze sits on the board of ViCentra and is investor director at several of the portfolio companies of Health Innovations, including NovioSense (continuous glucose monitoring), NightBalance (a sleep position trainer for people with sleep apnea) and Stroke2prevent (preventing strokes during cardiac surgery). Prior to Health Innovations, Linze was Director Healthcare at ABN Amro, where he was responsible for the company’s healthcare activities in the Netherlands. Linze also worked as a healthcare-consultant at PricewaterhouseCoopers and holds a Master of Science in Business Administration from the University of Twente.

Remmert Laan

Non-executive Board Member

Remmert (Rem) Laan, is President of Diabetes Insights, LLC, a consulting company specialising in marketing and business development for manufacturers of diabetes drugs, devices and apps and he brings expert knowledge of the diabetes market to ViCentra’s Board . Prior to launching Diabetes Insights in 2015, Rem served as Executive Director of the William Sansum Diabetes Center in Santa Barbara, California. He also holds more than 15 years’ experience in diabetes device commercialisation, including insulin pump products. From 2003 to 2013, Rem served in various capacities with Roche Diabetes Care, including Vice President, External Affairs, North America, and Vice President, Insulin Delivery Systems Global Marketing and Reimbursement.

Our advisors

Dr. G. E. M. G. Storms

Medical Advisor

Dr. G. E. M. G. (Fred) Storms is one of the Netherlands’ leading authorities on the treatment of diabetes mellitus. Medical Director of the Diabetes Care team at St. Antonius Hospital, Utrecht until his retirement in 2016, Dr. Storms holds a special interest in the medical and technical advancements being made to improve diabetes treatment, and, as such, his work has long focussed on encouraging and supporting such advancements. He has participated in multiple international studies, including AT.LANTUS, PROactive, ONTARGET and EMPA-REG, and contributed to several trials of leading insulin pump therapies.

Anton Kittelberger

Innovation Advisor

Anton has devoted his professional life to improving the lives of people with diabetes. He is Co-Founder and Co-CEO of 9am.health, the first direct to consumer virtual diabetes clinic in the United States. It combines prescriptions, medication delivery, labs, and required specialists, making healthcare for people with (pre-)diabetes and related diseases incredibly convenient and affordable. Before 9am.health, Anton and his team built mySugr – a digital therapy management platform focused on people with diabetes. MySugr was acquired by Roche in 2017 and is now serving over 4 million users. Anton is also an active Startups investor in healthcare.

Our investors


INKEF is a venture capital firm based in Amsterdam and focused on the long-term collaboration and active support of innovative companies in the fields of Healthcare, Technology and IT/NewMedia. INKEF was founded in 2010 and currently has €500 million under management.


LSP (Life Sciences Partners) is a leading independent European investment firm, providing financing for private and public life-science companies. Since the late 1980s, LSP’s management has invested in a large number of highly innovative enterprises, many of which have grown to become leaders of the global life-science industry. With over €1 billion of investment capital raised to date and offices in Amsterdam, Munich and Boston, LSP is one of Europe’s largest and most experienced specialist life-science investors.

Health Innovations

Since 2007, Health Innovations has been investing in technology-driven healthcare start-ups, with a focus on early stage investments in Dutch medical device and service companies. Shareholders in their funds include ABN AMRO, Mediq and healthcare insurers Achmea and VGZ. The Dutch government also supports Health Innovations via a seed capital arrangement.

Hello Kaleido...

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