PRESENTING POWER BROKERS OF TECH: HR chiefs reveal how to get hired at Microsoft, Facebook, Netflix, and other top companies

For many, working at a top tech company like Hulu or Twitter would be nothing short of a dream job.

But it's not always easy getting a foot in the door - and it can be even harder to rise through the ranks of stellar performers once you're there.

If there's anyone who knows how to do just that, it's the human-resources chiefs at these top tech companies, who oversee initiatives such as recruiting, hiring, and granting promotions. So Business Insider went straight to the source.

We asked the heads of HR at companies including Lyft, LinkedIn, and Oscar to spill their best advice on acing the interview, ascending to management, and making every day exciting.

Their insights include: Think about your purpose when you're feeling unfulfilled at work and stay open to change in your job or industry.

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