Our Team
The Varadis team has over 40 years of experience in the fields of engineering, information technology, research, science, and business. Varadis is leveraging over 30 years of Tyndall technology development in the radiation monitoring and dosimetry space to bring the Varadis RADFET range to global markets.
Management Team
Brad Wrigley
Chief Executive Officer
Brad has 20+ years of experience within the Government, MedTech and IT industries and, in more recent years, as an entrepreneur and investor. Brad has worked for world-leading multinationals including consultancy firm Accenture and IT giant Dell EMC; leaving there in early 2017 as a Senior Director after working extensively within their Global Business Services and M&A verticals, and finally within EMC’s $1.2bn acquisition Virtustream. In Feb 2017, Brad joined Marion Surgical, a Toronto HQ’d VR Surgical Simulation company, as a co-founder and COO. In late 2018, when introduced to the RADFET technology and some of the smartest scientists in the world he embraced the opportunity to take this best in class technology to market and founded Varadis.
Nikola Vasovic
Director of Systems Engineering
Nikola received his Master's degree in electronics from the Faculty of Electronic Engineering, University of Niš in 2008. He is working on dosimeter characterization and development of data acquisition systems for dosimetric applications. He has experience in electronic system design, analog and digital signal processing. From 2008 to 2012 he was employed as a researcher at the EU FP7 RADDOS project at the Faculty of Electronic Engineering in Nis, and since 2012 has been with Tyndall National Institute. He is currently a senior engineer within the radiation detector team.
Dr. Russell Duane
Manufacturing Process & Standards Lead
Dr. Russell Duane is a Senior Staff Researcher at Tyndall. He has worked on a number of research projects and has acted as a consultant in the area of semiconductor devices for a number of indigenous and multinational companies.
He is currently responsible for improving the performance of the Tyndall RADFET technology and has already significantly increased production yield and is currently investigating two novel device structures to increase sensitivity. He holds three U.S. patents in the area of semiconductor devices.
Linda Mellerick
Director of Financial Operations
Linda brings over 20 years of experience in corporate finance, with extensive experience in leading early-stage companies to international success.
With a diverse industry portfolio, she has been responsible for expanding Ireland-based businesses to new international markets, and for a quick and significant turnaround and growth of GxP Systems to a successful exit to a Fortune 500 company. She was also a key player in the acquisition of Selc Ireland by Xylem Inc, a U.S. based smart technology powerhouse, and for the subsequent sale of Xylem to Itron Global.
Lee Barry
Director of Operations
With over 25 years experience, Lee has held senior design, operations and management roles through multiple growth phases of semiconductor, IVD and Technology start-ups. He has extensive experience in research group management, design group management and business development in both multinationals and start-ups.
He was previously COO of Tracknstop and Engineering Director with Ceva, Cork and Radisens Diagnostics. Lee holds a M.Eng.Sc. in Microelectronics from UCC, and a B.Eng. in electronic engnineering from CorkCIT (now MTU).
Niall Keegan
Director of Business Development Asia
Niall lives in Yokohama, Japan and has been successfully collaborating for over 25 years with technology companies, from three- person start-ups to 1000+ people publicly listed companies, wishing to develop their businesses in Asia.
Product sectors Niall has worked in include semiconductors, wired/wireless communications, medical devices, automotive and renewable energy.
Companies such as SD Wind Energy, Inseego (5G devices), Sequans (4G, IoT semiconductors), HeartSine/Stryker (defibrillators), Firecomms/ZJY (optical fiber transceivers) and PMC-Sierra/Microsemi (network semiconductors) are just some of those with whom Niall has successfully collaborated.
René Williams
Director of Marketing
René is an experienced marketing executive with a wealth of international experience developing products and brands for growing global business‐to‐business and consumer product companies.
As director of marketing for start-ups and privately-owned companies for 20+ years, she has made significant contributions that led to acquisitions of high-tech and med tech businesses. René is also an advisor for non-profit organizations.
Declan O’Mahoney
Business Advisor
Declan O’Mahoney is an engineer and entrepreneur with extensive international experience in technology companies. He was CEO of Firecomms (2002-2011), a compound semiconductor company (acquired by ZJY Corp China in 2010.). He was CEO of HeartSine Inc. (2012-2016) a Med Tech Defibrillation company acquired by Stryker Corporation (NYSE: SYK) in 2016. Declan is the entrepreneur in residence at Tyndall National Institute and is a Non-exec director, investor and advisor to several technology companies in IOT, Semiconductor and MedTech areas
Board of Directors
Brad Wrigley
Chairman/CEO
Brad is a 20+ year veteran, entrepreneur and investor with experience working within the Government, MedTech and IT industries. Brad has worked for world-leading multinationals including consultancy firm Accenture and IT giant Dell EMC; leaving there in early 2017 as a Senior Director after working extensively within their Global Business Services and M&A verticals, and finally within EMC’s $1.2bn acquisition Virtustream. In Feb 2017, Brad joined Marion Surgical, a Toronto HQ’d VR Surgical Simulation company, as a co-founder and COO. In late 2018, when introduced to the RADFET technology and subsequently some of the smartest scientists in the world he embraced the opportunity to take this best in class technology to market and founded the Tyndall Institute spin-out Varadis.
Carl Jackson
Board Member
Carl is a successful entrepreneur, advisor, fractional executive and investor who holds a PhD in Microelectronic Engineering from the National University of Ireland, Cork at the Tyndall National Institute, focusing on the development of Single Photon Avalanche Diode (SPAD) and Silicon Photomultiplier (SiPM) sensors which are extremely sensitive light detectors manufactured in a semiconductor foundry.
Carl is the founder of SensL, a highly profitable SPAD and SiPM sensor product company, which became and a leader in multiple market sectors including Medical Imaging, Radiation Detection, Biophotonics and Automotive and was acquired by onsemi in 2018. After completing SensL’s integration, establishing the product roadmap and achieving IATF 16949 certification, Carl exited onsemi to focus full time on entrepreneurial activities.
Linda Mellerick
Board Advisor
Linda brings over 20 years of experience in corporate finance, with extensive experience in leading early-stage companies to international success.
With a diverse industry portfolio, she has been responsible for expanding Ireland-based businesses to new international markets, and for a quick and significant turnaround and growth of GxP Systems to a successful exit to a Fortune 500 company. She was also a key player in the acquisition of Selc Ireland by Xylem Inc, a U.S. based smart technology powerhouse, and for the subsequent sale of Xylem to Itron Global.
Declan O'Mahoney
Board Member
Declan O’Mahoney is an engineer and entrepreneur with extensive international experience in technology companies. He was CEO of Firecomms (2002-2011), a compound semiconductor company (acquired by ZJY Corp China in 2010.). He was CEO of HeartSine Inc. (2012-2016) a Med Tech Defibrillation company acquired by Stryker Corporation (NYSE: SYK) in 2016. Declan is the entrepreneur in residence at Tyndall National Institute and is a Non-exec director, investor and advisor to several technology companies in IOT, Semiconductor and MedTech areas