Wainiqolo scored four tries for the Drua this year in the National Rugby Championship.
Wainiqolo represented the Fiji 15s team in the 33-31 win against the Barbarians in November.
He also represented RKS in the Deans Competition.
Fiji 7s coach, Gareth Baber says that he has had a good look at Wainiqolo and will see if Wainiqolo gels into their system as soon as possible.
Hamilton 7’s will be played on the 25th and 26th of next month and Fiji is pooled with Argentina, Australia, and Samoa.