Programming Languages·Used in 1 roles

TypeScript cover letter

TypeScript adds type safety to JavaScript and is increasingly required for frontend and full-stack development roles.

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How to showcase TypeScript

  • 1Mention migration experience from JavaScript to TypeScript
  • 2Describe type system designs and patterns used
  • 3Reference strict TypeScript configurations
  • 4Show how TypeScript improved code quality
  • 5Mention TypeScript with specific frameworks (React, Node.js)

Example phrases to use

  • “Led TypeScript migration of 200K LOC codebase, reducing runtime errors by 60%”
  • “Designed type-safe API client used across 10 frontend applications”
  • “Implemented strict TypeScript configuration catching 40% of bugs at compile time”
  • “Built end-to-end type-safe stack with TypeScript, Prisma, and tRPC”

Common mistakes

  • Treating TypeScript as just "typed JavaScript"
  • Not mentioning strictness level or configuration
  • Listing TypeScript without showing type system expertise
  • Forgetting to mention improved developer experience

Related skills

JavaScriptReact

Roles requiring TypeScript

Frontend DeveloperTechnology

Frequently asked questions

Is TypeScript experience required for JavaScript jobs?

Increasingly, yes. Many companies are migrating to TypeScript or already use it. Highlight TypeScript experience prominently for frontend/full-stack roles.

How do I show TypeScript proficiency?

Describe type system features you've used: generics, utility types, discriminated unions. Show you understand TypeScript beyond basic annotations.

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