Hire TypeScript Developers
Rarely a standalone role - TypeScript is usually a qualifier on a React, Node or full-stack position. Where it genuinely stands alone is in codebases migrating from JavaScript, or in teams maintaining shared type libraries, where the work is designing types other engineers consume rather than shipping features.
Skills to screen for
Must have5
- TypeScript generics, conditional and mapped types
- Strict-mode configuration and its practical implications
- JavaScript runtime semantics underneath the types
- Type-safe API contract design
- Incremental migration strategy for existing JavaScript
Useful to have4
- Zod or similar runtime validation
- Monorepo tooling
- Declaration file authoring
- ESLint rule authoring
Experience levels and what to expect
CTC ranges are advertised figures from live listings on betterjobs.in, not survey data. Actual offers vary with location, funding stage and interview performance.
| Level | Experience | Scope | Typical CTC |
|---|---|---|---|
| Junior | 0-2 years | Writes well-typed application code within existing type definitions. | ₹5-9 L |
| Mid-level | 2-5 years | Designs types for a module and handles generics comfortably. | ₹10-20 L |
| Senior | 5-9 years | Owns shared type architecture and migration strategy. | ₹22-40 L |
| Lead / Principal | 9+ years | Sets type-safety standards across the engineering organisation. | ₹42-70 L |
What this role owns
- Design shared types consumed across packages or services
- Drive incremental strictness in a legacy codebase
- Keep runtime validation and static types in agreement
- Review for type safety without over-engineering
What actually separates a good hire here
Ask where they would deliberately use `any` or a type assertion. Engineers who say "never" have not maintained a large migration; ones who can name the specific boundaries - untyped third-party libraries, deserialisation edges - have.
The common mistake
Over-indexing on type-gymnastics ability. Elaborate conditional types are usually a signal of enthusiasm, not of the judgement to keep a codebase readable.
Questions worth asking in a first screen
- 1How do you keep a runtime API response and its TypeScript type from drifting apart?
- 2When is a type assertion the correct choice?
- 3How would you introduce strict mode into a 200k-line JavaScript codebase?