Some Job Listings in Singapore

This table aggregates some job listings which fulfill the following criteria:

1. The job is based in Singapore.
2. The job listing was published by the employer in the past 28 days.
3. The job listing may be categorize as one of the following: Data Analyst, Data Engineer, Data Scientist, Software Engineer, Hardware Engineer, Product Manager, Program Manager.
4. The employer is either a software technology or hardware technology company.
5. The author is interested in the employer's open positions.

Here are some information characteristics:

1. The table data sources are employers' careers webpages. Let the set of webpages be known as "S1".
2. The table data is refreshed once per calendar day. During the data refresh, S1 is studied.
3. The table data includes the author's annotations. During the data transformation and cleaning stages, the "Role Category" field was created.