Engineering evidence, not claims · verified fixes only in the Fix Factory portfolio
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Got a software problem
your team is stuck on?

Persistent bug. Failed integration. Concurrency fault. Environment-specific failure. An issue your engineers understand but do not want to keep circling.

Bring us the problem. Judge us by the evidence.

Stripeconcurrency fix verified, approved and merged upstream
go-jsonnetLinux post-fork deadlock reproduced; repair verified across Python and C-bindings coverage
Cloudflare Pingoracancelled cache-writer stale-lock defect reproduced; cancellation-safe repair verified
Next.jshistorical request-body race independently repaired and stress-verified
Evidence rulereproduced is not fixed; verification determines the claim
Fix Factory evidence

Verified fixes with clear upstream status.

A locally verified repair and an upstream merge are not the same thing. We show both statuses plainly and publish only work that has passed our fix-verification threshold.

The offer

Your engineers know the system. We help when a defect becomes an expensive distraction.

You are not buying access to an AI tool. You are buying focused engineering work aimed at getting a difficult software problem reproduced, understood, repaired where possible and verified.