Y.A.M Tunku Dato' Seri Nadzaruddin Ibni Almarhum Tuanku Ja'afar ("Tunku Dato' Seri Nadzaruddin") is the youngest son of Almarhum Tuanku Ja'afar Ibni Almarhum Tuanku Abdul Rahman, the 10th Ruler of Negeri Sembilan. He went to school at St. Pauls Institution Seremban, King George V in Seremban and Cheltenham College, England. 

Tunku Dato' Seri Nadzaruddin holds a Bachelor of Science (Hons) Degree in Mathematics from Middlesex University, England.Tunku Dato' Seri Nadzaruddin started his career in 1982 with British Telecommunications in London. After his graduation from Middlesex University, he joined ESSO Production Malaysia Inc. ("EPMI") as a System Analyst until March 1988. He then left EPMI to become the General Manager of Asia-Pacific Videolab Sdn. Bhd. until April 1990. In May 1990, he joined AHB International Berhad (Formerly known as Antah Holdings Bhd) as Executive Assistant to the Managing Director. 

In December 1992, Tunku Dato' Seri Nadzaruddin was appointed as an Executive Director of Hwang-DBS Securities Bhd (which later changed its name to Hwang-DBS Investment Bank Bhd) until April 2014. 

He has previously served on the Board of Directors of the following companies:-

1.AHB International Berhad (Formerly known as Antah Holdings Bhd)
2.Affin Hwang Investment Bank Berhad (Formerly known as HwangDBS Investment Bank Berhad)
3.Hwang Capital (Malaysia) Sdn. Bhd. (Formerly known as Hwang-DBS (Malaysia) Berhad)
4.Kian Joo Can Factory Berhad
5.Box-Pak (Malaysia) Bhd.
6.Nova MSC Berhad

Tunku Dato' Seri Nadzaruddin is the Patron and Past President of Persatuaan Broker Niaga Hadapan Malaysia (Malaysia Futures Brokers Association). He also served as Deputy President for Financial Planning Association of Malaysia (FPAM) from January 2000 until 2004.

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