top of page

Our Senior Team

Meet the team

Next Section
  • LinkedIn
Doug Johnson-Poensgen

Chief Executive Officer, Founder

As CEO of Circulor, Doug has 25 years international experience as an Executive and Non Executive Director, operating in TMT, Financial Services, IT and Management Consultancy sectors.


His leadership experience spans roles in large corporates (Barclays, BT, Serco, AIMIA), scale-ups (Cadence, ISD) and start-ups (Circulor, Snapdragon).


He has broad functional experience with consistent themes being innovation (both new product and to drive transformation), delivering growth and regulation.

  • LinkedIn
Bob Parker

Chief Financial Officer

Bob has 30 years of considerable financial and management experience, having held a series of senior finance roles at a range of leading technology companies. He joins Circulor from DefinedCrowd Corp., a leading AI training data company, and prior to this was CFO at cybersecurity firm SentinelOne between 2017 and 2020. During his time at SentinelOne, the company expanded significantly through multiple successful fundraisings, culminating in a listing on NYSE in June 2021, with a valuation of US$8.9bn. 


Bob is also an Advisor at Firmbase, a VC-backed, enterprise SaaS fintech startup, and a Board Member and Investor in a stealth security start-up.

Coenraad van Deventer

Chief Technology Officer

Coenraad has over 20 years experience in building and delivering software products in a variety of industries including HR, Finance, Insurance, Utilities (Water Billing) and Defence.


His experience includes working on Oracle E-Business and APEX projects, configuration of Cloud environments in Microsoft Azure, Amazon AWS and the implementation of Continuous Integration and Continuous Delivery pipelines for Oracle projects using TeamCity and Microsoft TFS.

  • LinkedIn
  • LinkedIn
Magdalena Rychlewska

Chief of Staff

Magda is responsible for closing the gap between strategic objectives and reality and building Circulor’s corporate services globally; looking after recruitment, compliance and governance.

She comes from a legal background and has over 10 years of experience in business management, private equity and insurance.


  • LinkedIn
Yue Jin Tay

VP of Sales, APAC

Yue Jin has worked internationally in extensive global commercial and management consulting roles for over 20 years.

He co-founded Procserve, an eCommerce business and advises innovative businesses scaling-up for growth.

He has worked with a variety of large corporates (Sony, Shell, PA Consulting, UK Public Sector) and technology businesses (Compaq, 3Com), including B2B networks and Blockchain technology.

20181124 Ellen small.jpg
  • LinkedIn
Ellen Carey

VP of Public Affairs & Strategy

Ellen has dedicated her career to advocating for clean technologies—running successful campaigns for technologies such as electric vehicles and renewable energy that shape market dynamics and create new business opportunity. 

She has held senior positions at Samsung, Audi of America, and the American Wind Energy Association, working internationally across policy, communications, and corporate development.

  • LinkedIn
Fearghal Kearney 

VP of Sales, EMEA

Fearghal has extensive experience in inspiring business executives to leverage blockchain, machine learning and AI technologies in their supply and value chains to promote sustainability and transparency and helping companies verify responsible sourcing and address ESG objectives.

Fearghal is an accomplished senior finance and commercial professional with over 25 years of experience in advising and managing businesses across several industries focusing on providing visibility into financial, procurement and supply chain processes.

  • LinkedIn
Paul Turley

Chief Software Architect

Paul is an experienced, hands-on software architect involved in the architecture, design, and implementation of large enterprise applications. He has over 25 years of experience in various industries including finance, manufacturing and cyber security, as well as work for both the British Armed Forces and Royal Air Force.

He has a keen interest in emerging technologies, including blockchain and the need for enterprise systems to provide customers better insight into their data to help them meet traceability and sustainability objectives.

  • LinkedIn
Luise Müller‑Hofstede

Business Development Director

Luise is a senior business expert with 12+ years of experience in Business Development and Digital Communication in managerial positions. Her focus lies in supporting the German and European automotive industries in their responsible sourcing agendas and climate neutrality objectives.


Luise has in-depth knowledge of the electric vehicle battery market, with a broad network spanning end-to-end supply chains. Her expertise lies within business opportunities associated with the drive towards sustainable and ethically sourced primary and secondary battery materials.

bottom of page