"I'm delighted to have someone of Will's calibre join us at such an exciting time. His depth of corporate experience and leadership will be critical to help NBN Co transform into a full-scale service delivery company," said NBN Co CEO Stephen Rue.
"Will's proven track record in telecommunications will allow NBN Co to evolve our operating model and maintain a sharp focus on our customer-led strategy".
Irving joins NBN Co after working at Telstra since 1997. Initially working in legal and regulatory roles, he went on to the positions of Telstra Business group managing director, Telstra Retail acting group executive, Telstra Wholesale group executive, and most recently interim CEO of Telstra InfraCo.
After leaving Telstra in October 2018 he became chair of the Telstra Foundation (the telco's philanthropic arm) in March 2019.
Irving's appointment follows JB Rousselot's resignation from NBN Co, which will take effect in October once Irving has taken up his new position.
"I would like to thank JB personally, and on behalf of the company, for six years of outstanding service," said Rue.
"In that time JB has held a number of key roles across the company from leading our strategy team through to scaling our network operations.
"JB's contribution will be felt for many years to come. Since joining NBN Co he has been a key member of the leadership team and a driving force in ensuring that NBN Co is well positioned to complete the build by June 2020."