The team departs for the Netherlands on next Monday, with the tournament beginning on July 26 at Ibrox Stadium when New Zealand will play Canada, Scotland and Barbados in pool play.
"There is some experience there in a team which will be well led by DJ Forbes," Tietjens said. "You need those players and among them there are new younger players at their Commonwealth Games who will feel the pressure and it is different pressure at a games.
"To win, it's all about consistency. It's being accurate when you need to be, defensively and dominating possession. If we can play consistently well, and having a strong bench will help, then that plays a big hand in being successful.
"Winning a gold medal at a Commonwealth Games is very special. There is nothing better than seeing a player being presented with a gold medal and listening to the anthem. I am confident if these guys can perform to the best of their ability and be on top of their game we can go very well."
Sevens team to compete at the Commonwealth Games in Glasgow:
•Pita Ahki (North Harbour)
•Scott Curry (Manawatu)
•Sam Dickson (Canterbury)
•DJ Forbes (Counties Manukau)
•Bryce Heem (Tasman)
•Akira Ioane (Auckland)
•Gillies Kaka (Hawke's Bay)
•Ben Lam (Auckland)
•Tim Mikkelson (Waikato)
•Declan O'Donnell (Waikato)
•Sherwin Stowers (Counties Manukau)
•Joe Webber (Waikato)