In early 2020, as the coronavirus began to ricochet around the world with terrifying consequence, Harish Pillay decided to do whatever he could to help stop the spread.

The software engineer, who lives in Singapore, heard the government was designing an app to track the virus, so he emailed the minister in charge and asked how he could help. He was part of a fellowship of developers and engineers who volunteered their services, ready to pitch in on a solution.

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