Prior to Humint, Poh Leng worked for nine years as a research assistant with the Singapore Ministry of Defence. She received specialist training in applied psychology and statistics and was involved in the conducting of tests, mass surveys, personal interviews and overseas behavioural studies of Singapore Armed Forces soldiers and staff. She also played a direct role in the compilation and statistical computations of data, and in the presentations of findings.

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During her tenure with the former Science Council of Singapore (R&D Department), Poh Leng collaborated with researchers to organise and publish research papers; plan and schedule seminar programmes and council meetings; prepare minutes of meetings and reports; and develop promotional collaterals for events. She moved on to sharpen her administrative skills further when she worked with schools and trainers on enrichment and training workshops for pupils and teachers; created certificates of participation and feedback reports; and was charged with handling billing and staff payroll.

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Poh Leng is self-driven, committed and believes in strong work ethics to drive character and competency. She sees herself growing in tandem with Humint, building on its people-centric philosophy to achieve personal satisfaction and professional fulfilment.