Mr. Tse joined the Canadian International Development Agency (CIDA) in 1984, occupying various positions, including country program analyst in the Pakistan Program, director-general of the China Program and minister-counsellor at the Canadian embassy in Beijing. Mr. Tse spent a year as policy advisor with the Priorities and Planning Secretariat of the Privy Council Office. Upon his return to CIDA, he served as director general of the Performance Review Branch and subsequently as vice-president of the Asia Branch.