Government Job Vacancies in Sri Lanka / Open University of Sri Lanka Job Vacancies / Walk-In InterviewsDemonstrator (Temporary) – Colombo Regional Centre – Open University May 8, 2022May 8, 2022 Walk-in-Interview Date – 2022-05-19 Here you can see the English Advertisement… ad-en-20220507-8 English AdvertisementDownloadModel ApplicationDownloadSource – Official Website