Ask HN: Where would one find visa sponsorship jobs?

I'm interested in moving to another country for a job (Front-end developer with 7+ years experience), but having a hard-time finding jobs/companies that help with getting a visa

I'm planning to find a job in Singapore/Hong Kong/Canada (open to other suggestions)

Only one that i know is HN's monthly 'Who's hiring' Anyone know any other places ?

Thanks in advance