Christian Nelissen in

Christian Nelissen

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Executive Ronin at NAB
📍 Sydney, New South Wales, Australia

Christian Nelissen is a senior data and analytics executive with extensive experience at major banks like NAB, Commonwealth Bank, and RBS. He recently led NABs massive data modernization, decommissioning a 26-year-old legacy platform and implementing an AI-driven "Customer Brain" to power personalization. He holds a Bachelor of Commerce from Curtin University.

He has a guiding philosophy of using modern data and AI to recreate the personalized, relationship-focused banking experience of the 1970s. He is also a supporter of the arts, having been acknowledged as a donor to The Australian Ballet.

Unique fact: He champions a "back to the 70s" approach, using cutting-edge AI to restore the personal touch of a local bank manager.

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Experience
41 Years
Current Role
Executive Ronin
Location
Sydney, New South Wales, Australia
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Priorities

Topics Christian cares about

AI-Powered Personalization
He is the key driver behind NAB's "Customer Brain, " a centralized AI engine using Pega to deliver hyper-personalized customer experiences at scale.
Data Modernization
He led the decommissioning of multiple legacy platforms at NAB, including Tableau, Business Objects, and a 26-year-old Teradata warehouse, migrating to a modern data stack with Databricks.
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Career

Work history

11-2025
Executive Ronin
NAB
11-2021 - 11-2025
Chief Data and Analytics Officer
NAB
9-2019 - 11-2021
Chief Data Officer
Commonwealth Bank
8-2017 - 9-2019
SVP, Head of Enterprise Data & Analytics
TD
6-2014 - 8-2017
The Data Guy
Royal Bank of Scotland
In the press

Media appearances

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Education
1989 - 1996
Bachelor of Commerce
Curtin University
Social presence
in
Behavioral profile

DISC profile (public)

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