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Our people.

Leadership team

Leadership team

Sumesh Puthiyaveetil, eXcentius

Sumesh Puthiyaveetil

Managing Partner

  • LinkedIn

Sumesh’s experience includes:

  • Commercial and Financial Due Diligence – Bolt Partners.

  • Strategy Consulting – Gartner, Accenture.

  • Technology development & product management – Inmarsat (Satcoms software and hardware), BT (IT systems), Turin (Hardware telecom equipment).​

Sumesh is a non-executive board member of a syndicate VC fund a board advisor to 1st Zoom, the US start-up developing advanced real-time video analysis technologies.

Paul Oliver, eXcentius

Paul Oliver

Managing Partner

  • LinkedIn

Paul’s experience includes:

  • Raising debt and equity – UK healthtech, UK tech series A.

  • Management Consulting – Coopers & Lybrand (now PwC), The World Economic Forum, Arup.

  • Technology development & product management – Vida HealthCare (IoT, SaaS), Inmarsat (Satcoms software and hardware), Hamel (SaaS).

Paul is a published author, facilitator at Davos, formerly a peer reviewer of the IEA's World Energy Outlook and formerly advisor to the United Nations Environment Programme. He is a Board member of several UK B2B and B2C businesses.

Anthony Bull, eXcentius

Anthony Bull

Non-executive Director

  • LinkedIn

Anthony's experience includes:

  • Director, Stonecross Investment Office

  • Chairman Of The Board, Ashcroft Partnership LLP

  • Non-executive Director, Simpson Travel.

Previously Anthony was a Partner with Gresham Private Equity, and Investment Director with Lloyds TSB Development Capital (LDC).

Shuen Wong, , eXcentius

Hok Shuen Wong


  • LinkedIn

Shuen's experience includes:

  • Senior Advisor to the CEO, ST Engineering iDirect.

  • Senior Vice President of Engineering, ST Engineering iDirect.

  • Chief Engineer, Inmarsat.

Shuen has extensive experience in satellite communications engineering and is acknowledged through the industry, particularly for his role in complex programs such as Inmarsat’s first global mobile broadband VSAT system (GX), the first 3G network over satellite (BGAN) and the first handheld satellite phone (IsatPhone Pro).

Advisory board

Brett Carter, eXcentius

Brett Carter

Chief Operating Officer, Medicines Development for Global Health

  • LinkedIn


  • Pharmaceutical drug development and commercialisation.

  • Leadership of biotechnology organisations.

  • Global drug licensing and acquisition.

Brett has 25 years of life sciences experience, covering medicine discovery, development and commercialisation. He has been the CEO of several biotechnology organisations and is currently a non-executive director of Grey Wolf Therapeutics, an immuno-oncology focused biotechnology organisation.

Brett spent 8 years leading global licensing, acquisition and venture capital backed transactions for GSK (deals in excess of $2bn) and is the former Chair of the Global Health Investment fund (backed by the Bill and Melinda Gates Foundation). 

Martyn Rees, eXcentius

Martyn Rees

Deep-technology hardware

  • LinkedIn


  • Hardware R&D.

  • Optical computing.

  • Virtualisation of hardware.

Martyn is the Head of R&D and Engineering at KETS Quantum Security, the deep tech company developing on-chip optical cybersecurity solutions to protect against threats arising from advances in quantum computing.


Formerly the Director of Engineering at Amulet Hotkey, he has held a variety of engineering roles at leading organisations including Invensys Controls and Philips Semiconductors.


Martyn has extensive experience of product development and Integrated Circuit design in IT, consumer electronics and semiconductor sectors. 

Dash Tabor, eXcentius

Dash Tabor

Chief Executive Officer, TUBR

  • LinkedIn


  • Development and commercialisation of data products.

  • AI-based deep tech.

  • Scale-up product management.

Dash has extensive experience of Product Management in high-growth organisations, and of designing, building, launching and supporting data-centric SaaS products. She specialises in building investment propositions for data products.


As Founder and CEO of TUBR, Dash created a deep-tech company that utilises proprietary physics-based multi-dimensional spacial modelling to circumvent the data requirement limitations of traditional ML when applied to predictive analytics.

Patrick Bangert, eXcentius

Patrick Bangert

VP of Strategic Business, Samsung Data Services

  • LinkedIn


  • Creation and commercialisation of
    software-based AI & ML.

  • Leadership of commercial data science.

  • B2B AI services.

Patrick is the VP of Artificial Intelligence for
Samsung SDS America, Samsung's $10B global IT services company, where he leads the creation of embedded cloud AI services and the development of healthcare modelling in pathology, 3D MRI,
X-ray and ultrasound.

Patrick founded and exited Algorithmica Technologies which developed ML analytics for the predictive maintenance and process optimisation in the chemical, petrochemical, and oil-and-gas industries.

Deepankar Dubey, eXcentius

Deepankar Dubey

Head of ChatGPT platform, Microsoft

  • LinkedIn


  • Global cloud infrastructure at scale.

  • Software platform engineering.

  • Product engineering.

Deepankar is currently leading the development and operation of the ChatGPT platform, for which Microsoft re-engineered their Azure could services architecture.

Deepankar has held many senior roles with Microsoft, including Principle Program Manager for Office 365 and Principle Engineering Manager for Bing and Display Ads.

Advisory board
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