Zaki became a Barrister through Lincoln's Inn in London, served at the Attorney General's Chambers from 1969 to 1970, and later served the subordinate courts from 1970 to 1973. In 1973, Zaki returned to the Attorney General's Chambers serving as a Federal Counsel and in 1976 he became a senior Federal Counsel under the Ministry of Home Affairs. Zaki was called to the Malayan Bar in 1983 and practised as a lawyer at Shahrizat Rashid & Lee beginning 1985. Zaki also served as a legal adviser to United Malays National Organisation, where he was the party's Disciplinary Committee chairman and had served the party in other areas as well.
As Federal Court judge
On 5 September 2007, Zaki was appointed as Federal Court judge. Later on 11 December 2007 he became the President of the Court of Appeal of Malaysia. Zaki finally became Chief Justice on 21 October 2008, having served little more than a year in Malaysia's superior court system. His appointment as Federal Court judge as well as subsequent promotions has sparked concern by various segment of the public due to his close ties with UMNO. This concern became more apparent as he has only served the judiciary for less than 5 years in total. Zaki began his job by announcing that he would get tough and take action against errant judges to prevent the image of the judiciary from being tarnished.
On 7 November 2008, Zaki Azmi made the announcement that two retired judges were suspected to be corrupt. He said he knew them personally but did not take action against them. Further to this, there has been strong links between Zaki and the government of Malaysia which would have signalled a conflict of interest should he become the Chief Justice of Malaysia. Recently, it was revealed that a company linked to former chief justice Zaki Azmi and UMNO lawyer Hafarizam Harun may have been given the concession for the Kinrara-Damansara Exchange, a road project awarded by the government. The award of the contract was purportedly made by the government just before the CJ retired. His wife is the shareholder of the company that is said to have been awarded the lucrative contract valued at RM2.2 billion. Before his retirement in September 2011, the Judges' Remuneration Act 1971 was amended to allow a chief justice, president or chief judge to claim for maximum pension after holding the office for more than three years. Previously, the provision required a chief justice to also serve a total of 10 years as a judge, out of which, three years must be spent holding the position of chief justice, president or chief judge. Opposition lawmaker Lim Kit Siang as well as some lawyers alleged that the amendment was made for the sole benefit of Zaki Azmi. Zaki had spent less than five years as a judge but more than three years in aggregate as president of the court of appeal and as chief justice.
