TypeScript is now the baseline for serious JavaScript development — not an optional extra. Over 80% of production JavaScript projects use it. The real question isn't whether to use TypeScript, it's whether your developer actually understands the type system or just adds : any whenever the compiler complains. GetDeveloper tests for the difference — with profiles in 48 hours.
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Every developer here is evaluated on TypeScript depth — generics, utility types, discriminated unions, strict null checks. Not developers who sprinkle types on JavaScript. Developers who design systems with the type system.
By The Numbers
What We Test TypeScript Developers On
Capabilities
TypeScript's real power is end-to-end type safety — from the database schema to the API response to the UI component. Here's what our TypeScript developers build and maintain.
Strictly typed React codebases with properly generic custom hooks, typed context, discriminated union state management, and component APIs that document themselves through their prop types.
Decorator-driven, fully typed backend services in NestJS — with typed DTOs, class-validator integration, Swagger generation from types, and consistent error handling across all endpoints.
End-to-end type safety from the server procedure definition to the React Query call in the component — no code generation, no manual API contracts, no runtime surprises.
Type-safe database access with Prisma — schema-first development where the TypeScript types for every query are generated from the database schema automatically.
Reusable TypeScript packages with proper generic types, excellent IDE autocomplete, and declaration files that give consumers the same type safety as internal code.
Migrating JavaScript codebases to TypeScript incrementally — without blocking existing development, adding value with each file migrated rather than waiting for a big-bang rewrite.
Our Process
From your first call to your developer's first typed pull request — most clients get there in under a week.
A 30-minute call. We ask about your stack — React frontend, Node/NestJS backend, full-stack — and your TypeScript strictness requirements and existing codebase state.
Day 1We hand-pick 3–5 TypeScript developer profiles matching your stack, TypeScript depth, and whether you need frontend-specialist, backend-specialist, or full-stack coverage.
Within 48 HoursTalk directly with developers. Ask about their approach to generic types, how they handle TypeScript's strict null checks, their experience with tRPC or Zod. We handle scheduling.
Day 3–4Once you choose, we handle NDAs, contracts, and onboarding. Your TypeScript developer starts on the agreed date — writing type-safe code from the first commit.
Day 5–7Vetting Process
This distinction is more important than it sounds. When TypeScript was adopted by most JavaScript projects, it created a large population of developers who technically "use TypeScript" — they write : string after variable names, add type imports to React components, and declare victory. That is not what we mean by a TypeScript developer.
A genuine TypeScript developer uses the type system as a design tool. They model domain concepts as discriminated unions rather than string enums. They write generic utility functions that preserve type information through transformations. They configure tsconfig.json correctly and don't add // @ts-ignore when the compiler pushes back. They understand the difference between unknown and any and why it matters.
Our technical assessment specifically tests for this depth. Every TypeScript developer in our network has cleared all four stages:
Context
TypeScript crossed a threshold a few years ago where it stopped being the typed option and became simply how professional JavaScript is written. The Stack Overflow Developer Survey has placed it consistently in the top five most loved languages, and its adoption in production codebases has passed 80%.
"TypeScript's real advantage isn't catching typos — it's that it makes refactoring safe, APIs self-documenting, and onboarding for new developers dramatically faster. The productivity benefits compound over time."
The practical benefits are real and measurable: autocomplete that actually works across your entire codebase, errors caught at compile time rather than 2am in production, refactoring you can do with confidence, and APIs that document themselves through their type signatures. For teams larger than one person building something that will last longer than a weekend, TypeScript is not optional — it's table stakes.
Every developer in our network who works in the JavaScript ecosystem is evaluated on TypeScript specifically — including how they handle generics, utility types, discriminated unions, and the situations where the type system gets genuinely complex. The shortcut answers (add any, use as) don't pass our assessment.
Also looking for related roles? See Hire React Developer, Hire Next.js Developer, and Hire Node.js Developer.
The TypeScript Ecosystem (2026)
Engagement Models
Three engagement models — same vetting standard, same support, same guarantees across all three.
Client Feedback
Our Commitments
Written commitments, before the engagement starts. No exceptions.
If the TypeScript developer isn't working out for any reason, we find and place a replacement at no extra charge. No disputes, no delays.
Start with a trial. If you're not satisfied with the work quality and fit, you're not obligated to continue. We'd rather earn your long-term business.
If we can't find a TypeScript developer who meets your requirements, you pay nothing. We don't charge for a service we haven't delivered.
FAQ
// @ts-ignore.