It's a specific technology in a coding environment where 95% seems to be male. I don't know 1 female dba, which is more closely aligned than what Redis does ( I do know multiple in design/UX/Graphics )
Open source even has more males to females than tech in general.
You are free to find better data than the Github survey: https://opensourcesurvey.org/2017/#data which clearly states that only 1/20 are female.
Additionally: 9 people in Redis org, all male: https://github.com/orgs/redis/people
Additionally: I can't see a single female Redis contributor: https://github.com/redis/redis/graphs/contributors
They have female employees outside of coding, for sure: https://redislabs.com/company/careers/
Convince me with relevant data that the judge panel is "unfair".
Please check the parent link for the "Judging Criteria" section (two of the three strands are Usefulness and UX) and "Project Ideas" section (literally all product designs).
UX and DX ( you removed halve), it can be an API. An API doesn't need design or UX.
There's not a single absolute requirement on design.
Since product design/ux is about graphics/visuals.
Sure, that's what I would do. But that part is up to them.
The assumption being made in this thread is that the six men are particular experts in the fields being judged: the best available experts.
From what I can see, the selected judges don't even work in those fields being judged (i.e. there is no reason to confer them this expertise), so the reasoning that the best available experts must have been chosen doesn't make any sense.