Especially when travelling, it can be useful to use your own computer as a mobile Wi-Fi hotspot.

"The Programming Olympiad was launched to identify, encourage, and reward computer programming talent among learners in South Africa," says Parry.

As companies like Amazon and Microsoft lay off workers and embrace A.I. coding tools, computer science graduates say they’re struggling to land tech jobs.

Computer-programming employment in the U.S. has reached its lowest level since 1980, according to data from the Current Population Survey from the Bureau of Labor Statistics. The fall correlates ...