Up for grabs will be two $5000 prizes, one for best commercial concept and the other for best product execution. During that time, start-up incubator Pollenizer will be scouring the teams looking for an opportunity to invest $10,000 for a 10 per cent stake in the project.

Participants will be judged on business model, user experience, innovation and integration with the Sensis API — an API that provides access to Yellow Pages and White Pages business listings and advertising.

The last hackfest, held over the weekend of 19 and 20 November last year in Melbourne, pitted Android developers against iOS developers. This time, the hackfest will add designers, coders, ideas people into the mix. Participants will be able to register an entire team before the event to avoid the team-forming phase on opening day.

Sydney will be the host city for this hackfest, with the venue being Pollenizer’s offices in Surry Hills between 9am and 7pm AEDST on the two Saturdays.

Teams will be able to work on their project during the intervening week. Participants will be able to arrive with pre-existing work provided that it is not an already finished product.

Registration is open until 23 March.