Met a recruiter a job fair. We exchanged emails but then she stated that they only wanted seniors. I took the challenge and implemented on that. I added additional features that I found out was part of the onsite challenge.
After submission, I had a call with the engineer, but was called immediately afterwards by the same recruiter to be rejected for not having enough experience. The engineer really just asked me what I found most challenging about React.
It seemed like it was planned from the very beginning; a massive time waster in having me take the coding challenge.
All their challenges are posted on their github and a massive joke to work on. Do not waste your time unless you're a senior level. No matter how well you perform, they won't even consider you unless you were a senior at your previous location.