CSIRO-backed deep tech venture capital fund Main Sequence Ventures has invested $4 million in a newly formed start-up, spun out of multinational construction and engineering company Laing O'Rourke, which aims to use artificial intelligence to make construction and mining worksites safer.

Presien was cofounded by Kieran MacKenzie and Nathan Kirchner, who built the workplace safety product while working in Laing O'Rourke's research and development division.