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Frequently asked questions

What experience should a senior Rust developer have?

Look for clear reasoning about ownership, borrowing, error types, and concurrency rather than syntax trivia. For backend work, ask about Tokio scheduling, tracing, and graceful shutdown. For library development, discuss API compatibility, trait design, and feature flags. A strong interview includes an existing code sample and asks which complexity the candidate would remove.

Should we use Axum or Actix Web for a Rust API?

Both are established choices, so evaluate fit with your existing services and team's experience. Axum integrates closely with Tokio, Tower, and the Hyper ecosystem. Actix Web offers its own application and middleware patterns. Compare authentication, observability, request extraction, testing, and deployment requirements using a representative endpoint rather than relying only on benchmark rankings.

Can a Rust developer add Rust to an existing Python application?

Yes, a focused extension can move a measured bottleneck into Rust without replacing the entire application. PyO3 provides Python bindings, and maturin helps build and package extension modules. Review data-copying costs, interpreter compatibility, error translation, and distribution targets first. Profiling should establish whether the slow path is computation, database access, or network waiting.

How should we manage Rust versions and dependencies?

Document the minimum supported Rust version and pin the development toolchain with rust-toolchain.toml where appropriate. Rust 2024 edition adoption is a separate decision from simply updating the compiler. Use CI to check supported targets, formatting, Clippy, and tests. Handle Cargo.lock according to whether you ship an application or publish a reusable library.

How does hiring a Rust engineer through NextGen work?

Start by booking a 15-minute call to describe your Rust codebase, delivery needs, and required working hours. Most teams interview matched engineers within a week of that first conversation. We sign an NDA and full IP assignment before touching code. If the fit is not right, we bring in a replacement with a proper hand-over.

Are your developers really based in the US?

Yes. Every engineer lives and works in the United States. No offshore subcontracting and no hand-offs to another team. That's written into the contract.

How fast can someone start?

Most teams interview matched engineers within a week of the first call. Start dates depend on your interview process.