Christian Nelissen in

Christian Nelissen

Energizer · DISC type I
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
Personality Overview

How Christian shows up

Big Picture Person
Enthusiastic
Full Of Energy

They are always positive and upbeat, so take their promises with a pinch of salt. They are friendly, approachable and love to make new connections. Unlike C or D types, they are vocal with their opinions but not so much with their questions.

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

No media yetWe could not find public media appearances for this person.
Education
1989 - 1996
Bachelor of Commerce
Curtin University
Social presence
in
Behavioral profile

DISC profile (public)

I

Influence (I)

Influence (I) reflects the degree to which a person prefers to work by influencing or persuading others. Those scoring high tend to be people oriented, motivated by social recognition and building relationships.

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