Melissa Christy, Director of One Green Button is a financial services transformation executive with 29 years’ experience, including 23 in mortgages, who builds lending businesses from a blank page and re-engineers established ones. In 2018/2019, Melissa built 86 400’s mortgage business (now ubank’s mortgage business) as Australia’s only neobank to launch home loans, and in 2024/2025 designed and built AMP Bank’s custom origination platform, delivered on time and on budget.

A skilled negotiator and influencer who builds the case for change and wins backing at the most senior levels. She has secured CEO approval and funding for enterprise transformation, negotiated warehouse funding term sheets, presented to APRA, boards and investors, and run competitive RFPs to select and orchestrate multi-vendor partner ecosystems.

A recognised industry innovator, listed on the Global Mortgage 100 list (2021, 2025), and a regular conference speaker on digital lending. Melissa brings commercial discipline across strategy, technology and partnerships, and is now shaping AI-enabled origination strategy, aligning executives, regulators, brokers, aggregators and technology partners around a shared outcome.

WHy ONE GREEN BUTTON?

“Melissa is hugely knowledgable on all things mortgage origination; both from a network perspective and all the nitty gritty of assessment and fulfillment. And even re: third party services - benefits, weaknesses, how to work with them.”
— Kate Gubbins, Founder & Chief Customer Officer, Simpology. October 2026

Testimonials

“Melissa is a true pioneer in mortgages and was the architect, executor and promoter of what was and still is the only digital mortgage for Brokers. With Melissa’s deep and broad knowledge of the customer, broker and value chain Melissa was able to work across all teams (including 15+ suppliers) to bring to life a game changing experience that sets 86 400 apart from the pack and up for growth over the next 5 years.”
— Travis Tyler (Former Chief Product and Marketing Officer, 86 400). December 2021

ARTICLES

Third Party providers MELISSA has worked with

Simpology

Loanapp and OMNI/Single App View

Loanworks

Direct solution, Loan origination system

NextGen

Broker Centre and App Centre

Equifax

Verification Exchange, Modern Fraud Check, Bureau, Access Seeker, ID Matrix, Title Search, ASIC searches

Fortiro

Protect, Accelerate

ID Verse/LexisNexus

Verification of Identity

Helia

Lenders Mortgage Insurance

Experian

Bankstatements

GBG

Green ID

Mogo

Screenscraping

Cotality

Valex, Rental AVM, PropertyHub, Property Bureau

MSA National

Document generation, 90 second documents, Personalised videos, Settlement

First Title

Document generation, Settlement, FastRefi

InfoTrack

Title Searches, ASIC searches

Perpetual

Document custody

Data Action

Core Banking

Engine by Starling

Core Banking

PEXA

AGGREGATORS

The broker channel is a big part of the Australian Mortgage Market, and Melissa brings over 13 years experience working closely with aggregators and brokers including:

Connective

AFG

LMG

Finsure

Mortgage Choice

Lendi/Aussie

SFG (Salestrekker)

Outsource (Salestrekker)

YBR (Salestrekker)

Astute (Salestrekker)

nMB

APPLICATION TYPES and FEATURES

Third Party/First Party/Digital Direct

PAYG

Self-employed

Construction

Top Ups

Guarantors

Residential SMSF

LMI

Offset