"Core contributor to mid-size successful startup"
Based on the limited information you gave me in your line, I rewrote it to give off a different tone and vibe. Now, instead of standing atop trophies ("FAANG") and leaderboards ("multi-billion dollar", "1,500 people"), the same description sounds more grounded in reality - a contributor as part of a larger whole, someone who seeks to do the same through their blog as opposed to someone commanding attention based on past glories alone.
This is what I mean when I say you may have chosen your words with specificity, but the way you string them together can have a more outsized impact than the words themselves. It's the same myth that a meal is just the sum of its ingredients, rather than the steps taken, the chaos managed, and the personal touches from experience or wisdom added into it that the recipe didn't cover.