Rust juniors either love compiler feedback or fight it. You want the first group. The language is learnable, but patience and workflow habits matter more than flashy macro knowledge.
Hire for ownership intuition, Cargo fluency, and calm error handling—not memorized lifetimes theory.
1. Ownership and borrowing in real code
They can point to who owns data, when borrowing is enough, and why cloning is sometimes the right tradeoff. They treat the borrow checker as a collaborator, not an opponent to silence with unsafe.
2. Cargo workflows that match teams
New project, module layout, cargo test, cargo clippy, and workspace basics if you use them. Messy Cargo.toml stories usually predict messy delivery stories.
3. Errors with Result and Option
They propagate errors intentionally, map error types sensibly for junior scope, and avoid unwrap everywhere in production-shaped code. Panic culture is a culture you do not want to import.
4. Tests and small refactors
They write unit tests, use fixtures proportionate to the task, and keep functions small enough that tests stay readable. Rust rewards incremental structure—juniors should enjoy that.
5. Reading compiler output like documentation
They paste errors, read the full message, and apply the suggested fix when it is right. If they reach for copy-paste from forums before reading, onboarding will stall.
Screen fairly and compare apples to apples
Use one shared take-home or pairing prompt for every finalist. The U.S. Equal Employment Opportunity Commission reminds small employers to apply consistent standards to applicants for the same role (EEOC hiring guidance).
Canvider AI Score helps you rank Rust candidates against the JD. InterviewGen suggests deeper technical follow-ups once resumes show baseline fit.
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