She then served as the tutor in the Department of Science and Mathematics Education from January 1991 to October 1999, and later becoming a lecturer from November 1999 to July 2005.

Additionally, she undertook the role of Coordinator of Continuing Education from January 2005 to December 2006, overseeing programs aimed at professional development and lifelong learning.

[7] Romaizah held key positions within the MoE, such as serving as a Director of Planning, Development and Research from December 2011 to 19 September 2013; member of the board of directors for Centre for Strategic and Policy Studies (CSPS) from 1 July 2013 to 30 June 2017; deputy permanent secretary for Core Education, deputy permanent secretary for Higher Education, and director of Planning, Development, and Research from 2 December 2014 to 27 January 2016; permanent secretary from 28 January 2016 to 29 January 2018,[8][9] and acting executive director of CSPS from 19 September 2015 to 8 January 2016.

[7] Romaizah took on significant leadership roles, including deputy chairman of Jerudong International School (JIS) from 8 June 2018; deputy chairman of the Brunei Research Council from 20 August 2018 to 10 April 2021; member of the Manpower Planning and Employment Council (MPEC) Working Committee on 3 October 2019; rejoined the board of directors for the CSPS on 1 November 2021.

[10][7] Following another cabinet reshuffle on 7 June 2022, Romaizah would replace Hamzah Sulaiman as minister of education,[11][12] making her the first woman to hold that position in the Bruneian government.