Harilaid began his career in real estate development and management and in 1992 founded Black Walk Corporation, a Canadian film and television production company, with David Fowler and Stephen Scott.

Harilaid and Black Walk worked with Alanis Morissette, Hootie & the Blowfish, and Shaggy.

Harilaid executive produced Two Hands to Mouth, his second feature with Director Michael DeCarlo, which premiered at the Madrid International Film Festival.

Written by Harilaid and Andrew Cymek, the project was produced by Craig Fleming and stars Brigitte Kingsley and Jacob Blair.

In recent years, Mihkel has expanded Black Walk's production slate to include lifestyle television.