What does "downshifter" mean?

A person who makes a transition to a less pressured or demanding career or lifestyle

Downshifter

noun

noun ·Rare ·Advanced level

Noun

1
A person who makes a transition to a less pressured or demanding career or lifestyle
2
A process, algorithm, etc. that shifts something to a lower level or frequency.

From downshift + -er or down + shifter.