The only purpose of a resume is to get you past the first round of screening. Name recognition trumps everything else. A job at a well-known and respected tech company like Google or Facebook gives you an automatic pass to the next round. Right or wrong, this doesn't include many startup companies unless they're already successful enough that it's debatable whether they're still startups.
Once you've got an actual person on the phone, the company you worked for is much less important than what you did and your ability to relate it. Still, speaking from personal experience, you should be prepared for interviewers to question whether you worked for a 'real company'.
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The only purpose of a resume is to get you past the first round of screening. Name recognition trumps everything else. A job at a well-known and respected tech company like Google or Facebook gives you an automatic pass to the next round. Right or wrong, this doesn't include many startup companies unless they're already successful enough that it's debatable whether they're still startups.
Once you've got an actual person on the phone, the company you worked for is much less important than what you did and your ability to relate it. Still, speaking from personal experience, you should be prepared for interviewers to question whether you worked for a 'real company'.