Networking with health care venture capitalists is now a full-time job.

Both Amazon Web Services and Nvidia have job openings for folks who can network with health investors from the elite firms.

In Nvidia’s case, that means funds like Venrock, which it specifically mentions. The AWS listing doesn’t name-check any firms in its job listing, in favor of letting its future hire identify “appropriate VCs to target.”

The idea behind these hires seems to be to build up relationships with investors and their portfolio companies, so they make an early decision to buy AI chips and services from Nvidia or AWS over others. Switching costs at a later-stage in the companies’ life-cycle are labor-intensive and expensive.

The idea isn’t new: Big tech companies have been networking with VC firms and start-up accelerator programs for years.

But the health care angle is interesting, as traditional tech firms haven’t typically paid much attention to health.

“What’s different today is that they (tech) recognize that healthcare is roughly a fifth of the GDP and they need a specific strategy to grow quickly in this sector,” said Venkat Mocherla, who runs business development at Qventus, a health start-up that uses artificial intelligence tools to speed up hospital operations.

Bringing AI tools to health care is a particularly hot area.

Nvidia’s strategic business development lead for health care would work from the company’s AI start-up program, which it describes as cultivating “dedicated and extraordinary start-ups who are revolutionizing industries.” It’s looking for a health care expert with a strong grasp of the inner workings of pharma and health information systems.

Genomics companies are rich targets for big tech, as they generate a massive amount of data. For that reason, Alphabet has a team called Google Genomics dedicated to the space, and Amazon made a strategic investment in Grail, a company that mines genetic information for early signs of cancer.

Venrock health investor Bob Kocher said by phone that he is not shocked that companies are looking to network with his team.

“It is certainly true that many large companies reach out to us to work with our portfolio companies and let us know why we should be early adopters,” he explained. Venrock has backed health companies ranging from Castlight to Juno Therapeutics.

Kocher said companies like Apple, Alphabet and Amazon are realizing that these companies have strong growth potential and are on the market for new technology tools.

“Health care is a data-intensive business,” he said.

He also has some advice for applicants to these jobs.

“I like two pumps of vanilla in my latte,” he joked.