Hire TypeScript developers

Almost anyone who writes JavaScript will tell you they know TypeScript. The difference shows up months later, when the codebase is either a set of types that catch real bugs at compile time or a pile of any annotations that gives you the ceremony of types with none of the safety. A strong TypeScript developer produces the first kind, and it changes how fast the whole team can move: refactors become routine, new hires read the types instead of asking around, and a whole class of production errors never ships. turnkey.dev vets for that.

What a TypeScript developer does for you

A strong TypeScript hire will:

• Keep the codebase honest. Strict mode on, any treated as a bug, and types that model your domain so the compiler catches mistakes before your users do.
• Work across the stack. The same language runs your React front end and your Node back end, so one developer can own a feature end to end, sharing types between client and server instead of duplicating them.
• Make APIs type-safe. With tools like tRPC and Zod, the contract between front end and back end is checked at build time, and payload validation at the edges stops malformed data at the door.
• Set up tooling that pays for itself. ESLint rules that enforce the team’s standards automatically, Vite for fast builds, and CI that fails on type errors instead of letting them ship.
• Test what matters. Unit tests with Vitest, end to end flows with Playwright, and enough coverage that the team can deploy without holding its breath.
• Keep a monorepo workable. Shared packages, consistent configs, and build caching, so multiple apps and libraries live together without stepping on each other.

When to hire a TypeScript developer

The common triggers: you are building a new product and want type safety from the first commit, you have a JavaScript codebase that has grown past the point where people can change it confidently, your front end and back end teams keep breaking each other’s contracts, or a strict-mode migration has stalled because nobody owns it. If your need is really framework depth rather than language depth, the React, Angular, or Vue hubs below may be the better starting point, and the talent pools overlap heavily.

How turnkey.dev vetting works

Every developer goes through a screen on fundamentals (the type system, generics, narrowing, how TypeScript actually compiles), a practical exercise built around a realistic strict-mode codebase with a refactor and a bug to find, and a review of production TypeScript they have owned, including migrations run, tooling decisions made, and how their types held up as the code grew. Framework familiarity is noted, but we vet the language and engineering judgment underneath it. We reject far more than we accept.

Seniority, and what each level is for

Most companies coming to us need one senior developer who can own a product surface end to end, with a lead brought in briefly for decisions like monorepo structure or a large migration plan.

What it costs and how fast

Vetted TypeScript developers typically bill in the $60 to $120 per hour range, with senior full-stack engineers at the top. Because TypeScript spans front end and back end, one strong hire often covers ground that would otherwise take two. You will see the rate before committing, and requesting a shortlist is free. Expect a shortlist in 2 to 5 days.

Start with a request, not a contract

Tell us your stack, the goal (a new build, a feature push, a strict-mode migration, or ongoing maintenance), and your timeline. We come back with a short list of vetted developers who fit, including rate and availability. You interview, run a paid trial if you want, and only then decide. If the fit is wrong in the first two weeks, we re-match at no cost.