Sydney-based mobile payments and transactions products vendor, Mint Wireless, has appointed three senior management executives to fill the roles of chief technology officer (CTO), chief marketing officer (CMO), and general manager.

Fred Yip has been appointed CTO, and brings 13 years of research and development, engineering and consulting experience to his new position.

Yip worked with Mint Wireless during a stint as director of Genexis Consulting, where he developed and implemented Mint-based mobile payment solutions and infrastructures for customers.

Before Mint, he worked as ViViPOS Australia managing director, and in the same role for Wine Bank's Hong Kong business.

Mint has named Justus Hammer as its new CMO. Hammer co-founded Australian buying website, Spreets, which was sold to Yahoo!7 for $40 million in 2012. He remains an investor, advisor, and non-executive director to startups Vice Gold, Airtasker and Tempurer.

Prior to Spreets, he was in charge of marketing at Australian price comparison website, GetPrice, as well as Goyellow.

Bjorn Behrendt will fill the general managerial role, having previously co-founded and led ParcelPush and StyleTread. He also co-founded Service-Community.net, a crowd-sourced and mobile software-as-a-service (SaaS) solution.

His career has seen him with KPMG Consulting and eBay Germany.

"[Yip, Hammer and Behrendt's] experience will lay the foundation for Mint's further growth and expansion in Australia and Europe," Mint chief executive officer (CEO), Alex Teoh, said. "Having established successful careers overseas, they will also be bringing an added dimension of experience on how we can internationalise Mint as we expand globally.

In addition to its Sydney headquarters, Mint has offices in London and Singapore.