BuildersAlpha
BuilderIQ Assessment

Hire engineers who actually build with AI.

BuildersAlpha runs candidates through real, time-boxed builds with a full AI toolchain — then scores how well they prompt, verify, orchestrate, and ship. One number your hiring team can trust: the BuilderIQ.

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Trusted signal over trivia. No leetcode. No take-home theater.

Live Session
Strong Hire
91BuilderIQ
Sarah Chen
Senior Software Engineer
Top 1%global
Archetype · Architect

LIVE SESSION · Stripe subscriptions · 78 min

What we measure

Six skills that separate AI builders from AI bystanders.

Every session is graded on the behaviors that actually move shipped software — not whether someone can recite an algorithm.

Prompt Engineering

95

Frames intent precisely; gives the agent the right context first.

Verification

96

Validates output instead of trusting it; checks edge cases.

Architecture

88

Makes sound structural decisions and defends trade-offs.

Agent Orchestration

90

Directs tools and parallel agents effectively.

Testing

92

Tests with discipline — coverage that matches the risk.

Delivery

91

Ships working, reviewable software on time.

Real-world assessments

Build a production-ready Stripe subscription system.

Candidates build production-grade systems against a real grader, in 90 min — with the same AI tools they would use on the job.

Toolchain provided
Claude CodeCursorTerminalBrowserGitDocs
Task requirements
  • Create and switch plans with correct proration
  • Idempotent webhook handling (no double-charge on retry)
  • Handle failed payments and dunning state
  • Tests for the proration math and webhook signatures
  • A short README explaining your architecture trade-offs
Implement subscription billing: plans, checkout, proration on upgrade/downgrade, and a webhook handler that is idempotent under retries. Persist state in Postgres. The grader runs your test suite and a hidden integration check.

We never train on your data — contractually guaranteed.

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