Evilmartians iconEvilmartiansSep 2, 2026

Why Gusto hired Evil Martians for Sidekiq infrastructure

Gusto is the payroll, benefits, and HR platform for more than 500,000 businesses. Case Study, Rails, AI, Ruby, Sidekiq Gusto runs payroll for 500,000+ businesses on one of the largest Rails monoliths anywhere.

Why Gusto hired Evil Martians for Sidekiq infrastructure

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Case Study, Rails, AI, Ruby, Sidekiq Gusto runs payroll for 500,000+ businesses on one of the largest Rails monoliths anywhere.

Why a team this strong hired Evil Martians for Sidekiq at scale, what running background jobs at that size actually takes, and when to stop waiting for the perfect hire.

Gusto is the payroll, benefits, and HR platform for more than 500,000 businesses.

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Case Study, Rails, AI, Ruby, Sidekiq Gusto runs payroll for 500,000+ businesses on one of the largest Rails monoliths anywhere. Why a team this strong hired Evil Martians for Sidekiq at scale, what running background jobs at that size actually takes, and when to stop waiting for the perfect hire. Gusto is the payroll, benefits, and HR platform for more than 500,000 businesses.

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  • In May 2026, it crossed $1B in annual revenue, cash flow positive, last valued at $9.3B.

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  • I build developer tools and study the market that funds them.

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