Where we’ve come from

Since starting out more than 15 years ago, we have forged an enviable reputation as a trusted technology partner and provider of innovative IT solutions. Our focus is on delivering technology that boosts business value by increasing efficiency and productivity.

We’re the result of the merger in December 2013 of two very successful information technology businesses, Klikon Solutions and The Australian Centre for Advanced Computing and Communications.

Today’s AC3 is Australian owned, operated and run by its Directors, backed by a solid Senior Leadership team and powered by some of the brightest and best IT minds in the country.

Our Vision

We aspire to be Australia's most dynamic technology partner.

Our Values

Passionate people

Our people are our brand; their passion, skill and smarts are what drive our business forward. We find a little fun in everyday because we love what we do.

Disruptive doing

We’re disruptive by nature and always evolving. We challenge norms and refuse conventions. We always deliver: we’re doers, not talkers.

Genuine connections

Our relationships are everything. We connect with customers by really understanding their needs; and we connect with each other in a warm, genuine way.

Galactic change

Technology drives change. We make sure it’s change that’s good for our customers, good for our people, good for society, and good for the galaxy*

*As best we can.

Our Personality

We bring our values to life by being:


We have the energy of a start-up. We’re flexible and quick to respond.  

We don’t get bogged down by process. We adapt, recreate, reinvent.

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We use intelligence practically. We see problems and simply solve them. 

We don’t ignore insight or empathy. We get to the heart of the issue.

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We simplify the complex, and speak in ways that people understand. 

We don’t use jargon or complicated language. We keep it simple.

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Meet our Senior Leadership Team

Our leadership capability and quality is a key focus of our organisational culture; after all, whether we’re truly an ‘awesome place to work’ depends on the relationship our people have with their managers (and vice versa). Like our values say, we want to be known for our “genuine connections” and our team engage with each other in a warm and genuine way.

Our Senior Leadership Team are passionate about our business, our people and our customers. They’re hands-on in running the business, are genuinely connected to their teams, and work together to ensure we’re achieving everything we’re capable of, and more.

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Simon Xistouris

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Harry Kassianou

Director of Sales
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Bogdan Georgescu

Head of Professional Services
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Claudia Couzi

Head of Service Integration & Management
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Kathy Seymour

Head of People & Culture
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Chris Saad

Head of Talent Management
Stephanie Challinor

Stephanie Challinor

Head of Marketing and Communications
Ross Xenos

Ross Xenos

Head of Managed Services

Briant Kareroa

Government Sales Manager

Justin Freeman

Sales Manager Commercial Sector


AC3 believes in building relationships.  We have been working with two main charities, Ronald McDonald House and The Starlight Foundation, for a number of years. In addition, AC3's Culture Committee runs a campaign to raise funds for a different charity each month through events like morning tea and our monthly family lunch, catered for by AC3 in return for a gold coin donation from the team for a worthy cause!