Tan joined the MOFAT in 1984. From September 2002 until May 2005, she was the
Asia–Europe Foundation (ASEF) Governor for Brunei Darussalam. She was also designated as Brunei Darussalam's
non-resident ambassador to Nordic Nations (
Finland,
Sweden,
Denmark, and
Norway) from 2003 to 2008. She was appointed deputy
permanent secretary of MOFAT in 2010 and promoted to permanent secretary in December 2011. Since 2008, she has served as Brunei Darussalam's non-resident high commissioner to
New Zealand.
New Zealand On 9 April 2008,
Prince Al-Muhtadee Billah gave his permission to meet with three of the Sultanate's recently designated envoys to friendly countries. Tan, the high commissioner to New Zealand, was one of the recently appointed envoys. She was cross-accredited from
Bandar Seri Begawan to New Zealand. == Personal life ==