Tayenia is an academic and has served in various state institutions regarding economy and finance.
He was a faculty member at his alma mater, the University of Tehran.
His field of interest is public economics
He was the secretary of the economic commission from 1997 to 2000.
He served as the deputy head of the Presidential Office for planning under the former President Mohammad Khatami from 2001 to 2005.
Then he was again named the secretary of the economic commission in 2005 and his tenure lasted until 2007.

He was a representative of and an advisor to Mohammad Reza Aref during the 2013 presidential elections.
He was also Aref's economic advisor.

On 4 August 2013, he was proposed by President Hassan Rouhani as minister of economic affairs and finance.
On 15 August, the Majlis approved him as minister, giving 274 votes for and 7 votes against.
He was given the highest votes for with the rate of 96.5% which was also all-time record for Iranian confirmation process.
Tayenia is an academic and has served in various state institutions regarding economy and finance. He was a faculty member at his alma mater, the University of Tehran. His field of interest is public economics
He was the secretary of the economic commission from 1997 to 2000. He served as the deputy head of the Presidential Office for planning under the former President Mohammad Khatami from 2001 to 2005. Then he was again named the secretary of the economic commission in 2005 and his tenure lasted until 2007.
He was a representative of and an advisor to Mohammad Reza Aref during the 2013 presidential elections. He was also Aref's economic advisor.
On 4 August 2013, he was proposed by President Hassan Rouhani as minister of economic affairs and finance. On 15 August, the Majlis approved him as minister, giving 274 votes for and 7 votes against. He was given the highest votes for with the rate of 96.5% which was also all-time record for Iranian confirmation process.
Ali Tayebnia