Meet the team

Our leadership team

At Lexer, we believe in leading by example. Our leadership style is hands-on, caring, playful, and proactive—and we expect the same from our all-star team. We’re committed to building a welcoming culture where our people can pursue their passions, meet friends and mentors, and build innovative products that help our customers grow.

David Whittle



Dave has spent his career applying a passion for creativity, data and technology to drive transformative growth in companies he loves. Since mid 2014, David has been the CEO of Lexer, led the exponential growth and attracted an innovative team including M&C Saatchi and Experian alumni who deliver the creative approach to data that sets Lexer apart.

In addition to Lexer, David became the youngest ASX 200 Non-Executive Director when he joined the board of Australia’s largest department store in late 2015. Prior to Lexer, David spent a decade with M&C Saatchi, locally and globally building the digital practice, starting new agencies and ultimately as Managing Director of M&C Saatchi Group in Australia.

Dave loves skiing down mountains and cycling up them. He’s often running near the beach or swimming at one. When he’s not growing the team, he’s growing veggies. And whenever he wakes up in a new bed he takes a photo of it.

Aaron Wallis

CTO & Founder


Prior to founding Lexer in 2010, Aaron was the Digital Services Director at M&C Saatchi. Aaron was responsible for technical data, procedural innovations and management of a 50-strong production team. So it was after 12 years of experience that he began his mission to humanize data. This quest led to founding Lexer.

Aaron has built a passionate, driven and award-winning team at Lexer that now spans across Australia and North America. He has created a productivity-focused culture, incredible user experiences and high volume data architectures, for world-class brands and partners.

When away from his desk, you’ll find Az building LEGO, challenging himself in the kitchen, or, most likely hogging the microphone at Karaoke.

Chris Brewer



Chris is a passionate finance professional with 30 years experience across a wide variety of industries.  As CFO of Lexer, Chris gets involved in all manner of things, including numbers, facilities, information security, HR, legal and privacy.  But what he enjoys most is helping the commercial team work with clients and prospects.

Chris is lucky enough to have worked for extended periods in Melbourne, London, Chicago, Milwaukee, Vancouver and Riyadh.  Business is done differently in each of those cities, and a little bit of each is imprinted into Chris’ corporate DNA.

Chris spent 12-years with PwC before accepting a COO role with Tarsus plc, and so began his love of working with technology businesses.  Relocating back to Melbourne in 2003, Chris joined Hitwise and experienced the highs of taking a small Aussie business to a $250m trade sale.  Chris transitioned the Hitwise business to the acquirer before joining Lexer in 2012.

Chris loves golf, wine, cheese, the Brisbane Lions and his family (not in that order). Weekend priority is given to standing in the drizzle at netball and teenage birthday party transportation.

David Chinn


United States of America

David has spent his career leading data and technology businesses in both mature and emerging markets. He joined Lexer in 2015 as the General Manager where he helped to scale the Australian business over a two year period. David then founded Lexer’s North American business, he is based in Los Angeles and has responsibility for global marketing, sales and success.

His career in data and technology started at Experian where he worked for 10 years. During this time he launched Experian’s retail analytics business FootFall in ANZ and then grew this business throughout China, Japan & the South East Asia region while living in Hong Kong. In his last role at Experian as the General Manager of the ANZ Consumer Insights & Targeting division, he spearheaded the turnaround strategy that transformed Experian from an offline data business into a digital targeting powerhouse.

Despite living on foreign soil David still has Aussie tastes; beer, bbq’s, surfing and the great outdoors. He’s currently building the ultimate adventure vehicle – a sprinter van.

Alex Knight



Alex brings over 15 years experience in providing sustainable commercial outcomes for innovative, early stage technology and retail businesses.

Alex joined Lexer in 2014 as the company’s first Commercial Director with a mandate for business and commercial development. He now leads the strategic sales whilst overseeing Lexer’s expansion plans in emerging markets including Asia.

In the decade preceding joining Lexer, Alex lead a number of early stage businesses. As Co-founder and APAC Director of Athro Kinetics Plc he oversaw capital initiatives, supply chain and revenue growth, culminating in a successful UK IPO. More recently he was the COO of Rockwood Management Group, a NY based apparel and retail professional services firm and was the founding GM of menswear label MJ Bale.

Whether it is on a boat, a bike, a trail, up a mountain or simply in his garden, when not working, you will find Alex somewhere outside. Ideally with his family.

Want to join our team?

Learn more about how we work and see our open positions