Technology and operational staff at the ASX will be the worst affected by a snap redundancy round before the company’s half-yearly earnings due on Friday, as the market operator looks to reorganise after its CHESS disaster.

ASX staff were told by chief executive Helen Lofthouse last week that a review of the company’s operations had proposed structural changes and savings initiatives that would result in changes to procurement, contractor and consultant use, and an unspecified number of redundancies.