AAO- The post is categorized under Group ‘B’ and is the highest paid post among others offered through the recruitment exam. As much as 600 vacancies are offered for the post of AAO. The job profile of assistant audit officer is to assist the Audit Officer or Senior Audit Officer in conducting various departmental audits of government organisation. The audit involves financial, performance or compliance related aspects. It is a gazetted post and you will need to take section level decisions and report it to higher authorities. CGL exam pattern is such that the test is conducted in 3 tiers – Tier I (Online exam), Tier II (Mains and descriptive exam), Tier III (Typing test/ skill test)