Maybe this is a stupid question, but how do you pronounce HashiCorp? Is it "HAA-she" (rhymes with Kashi, like the cereal) or is it "HASH-i" (rhymes with "flashy")? I'm guessing it's the former since it'd match the Japanese pronunciation of your last name...?
The "ha" sound is like in hash, but it's a distinct syllable on it's own, without the "sh". The second syllable is more like "she". The "ha" and "shi" have the same weight, so the whole word is 2 syllables and 2 morae, unlike either of the two examples you gave (which are 3 morae each.)
It usually means "bridge" (橋) in the name Hashimoto, but can also mean "chopsticks" (箸) or "edge" (端), with a slightly different pitch (largely indistinguishable for non-speakers)
Heh I probably should've gone with squashy or washy, but whenever I try to pick a rhyming word, I take the suffix syllable and prepend every letter in the alphabet until I come up with a word (aashi, bashi, cashi...). Kashi won... :\