Sidekiq is a solid-style Icon from Simple Icons set.

The Sidekiq icon shows a white human silhouette performing a side kick inside a black circle. Drawn in the solid style on a 24px grid, the bold silhouette stays crisp and recognizable. Use it for Sidekiq branding, Ruby background jobs, worker queues, asynchronous processing, and developer tools. It belongs to Simple Icons free set in the Brand Logos family.