二級電腦操作員主要負責： (a) 操作和監察電腦設備、網絡和數據中心／伺服器室設施； (b) 向用戶提供資訊科技支援和求助台服務，並協助執行事故管理工作； (c) 協助管理電腦工件處理，並協助監察負責執行資訊科技服務的系統和相關的保安工作； (d) 協助採購資訊科技設備和服務，並協助處理合約管理和電腦場地準備工程，以及協助管理資訊科技資產和外間供應商；以及 (e) 協助整理記錄和文件，並協助編製統計資料和報告，以作管理用途。 電腦操作員須輪班當值(包括通宵班)，並可能須在星期日和公眾假期工作，以及被調派到政府資訊科技總監辦公室或不同決策局／部門工作。

A Computer Operator II is mainly deployed on – (a) operating and monitoring computer equipment, network and data centre / server room facilities; (b) providing user information technology (IT) support, helpdesk services, and assisting in incident management; (c) assisting in management of computer job processing, system and security monitoring of IT services; (d) assisting in procurement of IT equipment and services, contract administration, site preparation work, and management of IT asset and external suppliers; and (e) assisting in maintenance of records and documentation, and compilation of management statistics and reports. Computer Operators are required to perform shift duties (including overnight shift) and may be required to work on Sundays and Public Holidays and posted to work in the Office of the Government Chief Information Officer or various bureaux / departments.