This post has been turned into an ebook called, How Not to Suck at LinkedIn, where I explain this issue in lots more detail.
You can get it on Amazon Kindle if you’d like 29 other killer LinkedIn tips.
For now, you should turn the “He”, “She” pronouns into “I”, and then re-read your summary. You’re looking for a friendly flow, not a formal voice.
Oh, here’s an article you can read on my blog: https://careerenlightenment.com/linkedin-summary-domination