We source, vet, and manage hiring so you can meet qualified candidates in days, not months. Strong English, U.S. time zone overlap, and compliant hiring built in.
.svg){kind=logo}
TypeScript is a superset of JavaScript that adds static type checking at compile time. It was created by Microsoft in 2012 and has become the de facto standard for production JavaScript systems. TypeScript forces developers to declare variable types, function signatures, and object shapes before code runs, catching entire classes of bugs before they reach users. Teams using TypeScript report fewer runtime errors, faster development after initial setup, and better IDE support.
In 2025-2026, TypeScript is no longer optional for serious projects. 48.8% of professional developers use TypeScript, with 84.1% satisfaction among current users. 78% of all job postings now require or strongly prefer TypeScript. TypeScript reached 38.5% usage among all developers globally. 40% of JavaScript developers now code exclusively in TypeScript. Every major framework ships TypeScript by default: React, Vue, Angular, Next.js, Nuxt.js, and others all include TypeScript support out of the box.
TypeScript powers production systems at Google, Facebook, Airbnb, Slack, Stripe, and thousands of smaller companies. The ecosystem is mature: 60 million downloads per week of the TypeScript compiler, up from 20 million in 2021. Over 80% of the top 100 npm packages now include TypeScript typings. TypeScript is the quality signal. Teams hiring for TypeScript are building production systems, not prototypes.
Hire TypeScript developers if you're building production systems where reliability matters. The moment you have paying customers, multiple engineers, or code that's running longer than a few weeks, TypeScript saves money. The upfront cost of learning and setting up the build pipeline is offset by fewer bugs, faster onboarding of new team members, and better refactoring safety. A codebase written in TypeScript can be refactored confidently because the type system prevents entire categories of errors.
TypeScript is ideal for teams with 3+ engineers because code review velocity increases when types are explicit. You spend less review time asking "what type is this?" and more time discussing logic and design. For solo developers or very small teams, TypeScript adds overhead that might not be worth it. For teams shipping to production, TypeScript is a must.
If you're building a backend API, frontend application, full-stack system, or shared libraries, TypeScript provides enormous value. Teams migrating from JavaScript to TypeScript often report 30-40% reduction in production bugs. The investment in setup and learning pays for itself in the first 6 months.
TypeScript is NOT needed for throwaway scripts, internal CLI tools with minimal external use, or exploratory prototypes where you don't yet know the architecture. Learn to write TypeScript, but use it judiciously. A codebase that's 95% TypeScript and 5% JavaScript is better than 100% JavaScript or 100% TypeScript with loose types everywhere.
Must-haves: solid JavaScript fundamentals (closures, async/await, prototypes). Understanding of the TypeScript type system (interfaces, generics, unions, discriminated unions). Comfort with modern tooling (tsconfig, build tools like Webpack or Vite, typescript compiler). Experience writing types that are correct and useful, not just "any" everywhere. Red flag: developers who claim TypeScript expertise but write everything as type: any.
Nice-to-haves: experience with advanced types (conditional types, mapped types, utility types), understanding of when to use type inference versus explicit types, familiarity with testing TypeScript code, and knowledge of framework-specific TypeScript patterns (React's component props typing, Angular's dependency injection and decorators, NestJS's modules). Senior developers should understand when strict typing is worth the overhead and when loose typing is appropriate.
Strong TypeScript developers think about developer experience. They write types that are clear and prevent mistakes without being overly complex. They use tools like ts-node for development, prettier for formatting, and eslint for linting. They understand tsconfig deeply and know how to optimize build times. Red flags include: inability to explain generics, writing overly complex types that hide rather than clarify intent, or avoiding TypeScript's most useful features.
Junior (0-2 years): Can write basic TypeScript, understand interfaces and generics at a surface level, know how to fix type errors. Needs mentorship on writing types that scale.
Mid-level (2-5 years): Can architect type systems for moderate complexity projects, use advanced TypeScript features appropriately, write library code that exposes clean types. Can teach others TypeScript best practices.
Senior (5+ years): Can design large TypeScript codebases, understand when strict types help versus harm, mentor teams, and navigate frame work-specific TypeScript patterns. Deeply understands the trade-off between type coverage and development velocity.
Behavioral Questions (South's Vetting Process):
Technical Questions (Evaluation Notes):
Practical Assessment (Scoring Rubric):
Assign a junior TypeScript developer a real task: convert a provided JavaScript file (with loose typing) into properly typed TypeScript. The file should have functions with unclear signatures, generic data structures, and room for better types. Scoring: (1) Does it compile without errors? (2) Are types correct and useful (not "any" everywhere)? (3) Are there appropriate generic types where needed? (4) Are error paths typed correctly? (5) Is the result more readable than the JavaScript original? Junior benchmark: must score 4/5 with helpful types. Mid-level: must score 5/5 with thoughtful type design. Senior: should improve the design and explain trade-offs.
TypeScript adoption in Latin America is accelerating rapidly. Brazilian and Argentine developers have adopted TypeScript in large numbers, particularly in fintech and SaaS companies. Colombian developers in Bogota and Medellin increasingly work in TypeScript shops, especially in startups and companies doing contract work for North American clients. The talent pool is strong and growing.
Time zones favor collaboration. Argentine and Brazilian developers (UTC-3 to UTC-5) overlap 6-8 hours with US Eastern time. Colombian developers (UTC-5) align with US Central time. Synchronous pair programming, code reviews, and standup meetings happen during regular business hours. This eliminates the coordination costs of truly async teams.
Latin American TypeScript developers understand production concerns. They've built SaaS systems serving thousands of users, fintech platforms handling real transactions, and e-commerce systems managing inventory. They know when strict typing is worth the overhead and when looser code is appropriate. They're not just learning TypeScript; they're applying it in production systems.
Cost savings are significant. A mid-level TypeScript developer in Latin America costs $32-40/hour versus $65-100/hour in the US, a 60-65% reduction. A senior TypeScript developer costs $45-65/hour versus $100-150/hour in the US. These aren't junior developers at a discount; they're experienced engineers who use TypeScript properly in production systems.
English proficiency among TypeScript developers is high. TypeScript documentation is in English, modern tooling is English-dominant, and development discussions happen in English. Latin American TypeScript developers actively participate in global open-source and are accustomed to distributed teams with North American companies. They communicate clearly in written form, critical for remote work.
Step 1: Define Requirements We discuss your specific TypeScript needs: frontend-focused (React, Vue, Angular with TypeScript), backend-focused (Node.js, NestJS), or full-stack. We ask about team size, seniority level, and how strict you need type coverage to be. For example, a Series B startup might need full-stack TypeScript developers, while an established company might need specialized frontend engineers.
Step 2: Match from Pre-vetted Network South maintains a network of 300+ pre-vetted TypeScript developers across Latin America. We match your requirements against this pool, considering timezone overlap, framework experience (React, Angular, NestJS), TypeScript proficiency depth, and previous client feedback. You interview 3-4 qualified candidates instead of 50.
Step 3: Interview and Assessment You conduct technical interviews using our guidance on evaluating TypeScript expertise. We facilitate scheduling and logistics. Our vetting ensures you're talking to developers who write proper TypeScript, not just JavaScript with some type annotations.
Step 4: Onboard and Integrate Once hired, we ensure smooth onboarding: codebase documentation, TypeScript configuration explanation, IDE setup, and first-week success metrics. Your TypeScript developer is productive from day one and ready to contribute to type-safe code immediately.
Step 5: Ongoing Support and Replacement Guarantee South provides ongoing support including performance monitoring, conflict resolution, and satisfaction tracking. If a developer leaves or underperforms, we replace them at no additional cost during the first 90 days. Your team stays staffed with quality TypeScript developers.
Get started: https://www.hireinsouth.com/start
Use TypeScript from day one if you're building production systems. The setup cost (tsconfig, build pipeline) is a one-time investment. The benefits (fewer bugs, easier refactoring, better IDE support) compound over time. JavaScript is fine for scripts and prototypes. For anything serving customers, TypeScript is worth it.
No. You can migrate gradually. Create new files as TypeScript; leave existing JavaScript files alone. The gradual migration reduces risk and lets the team learn TypeScript without rewriting everything. Most teams report a 3-6 month migration timeline for moderate codebases, not a big bang rewrite.
Start with "strict": true in tsconfig.json and enable strictNullChecks. This catches the most common errors. Enable strictFunctionTypes and noImplicitAny as you get comfortable. You don't need perfect type coverage; aim for 80-90% rather than 100%. Some libraries and edge cases are easier to handle with type: any; use it judiciously.
Initially, yes. Developers spend time writing types and fixing type errors. After 2-4 weeks, velocity exceeds JavaScript levels because refactoring is safer, code reviews are faster, and fewer bugs make it to production. You get the same velocity as JavaScript but with fewer bugs. The math is almost always positive.
2-4 weeks to be productive, 2-3 months to write idiomatically. Junior developers learning TypeScript from scratch might take 1-2 months. Experienced JavaScript developers learn TypeScript quickly because the basics are identical. Invest in onboarding: pair programming, code reviews, and access to TypeScript documentation.
No, but most do. 80% of the top 100 npm packages include TypeScript typings, either native or via DefinitelyTyped. For libraries without typings, you can use // @ts-ignore or write your own type definitions. The ecosystem is mature enough that lack of TypeScript support is rare for popular libraries.
Monorepos with TypeScript are powerful. Use tools like Turborepo, Lerna, or npm workspaces to manage multiple packages. Each package has its own tsconfig.json. Root-level tsconfig.json sets shared settings. This allows type-safe imports across packages and makes refactoring safer. Ask TypeScript developers if they've worked in monorepos; it's a valuable skill.
Use strict types for production code; looser types are fine for experimental branches. A practical approach: strict types on critical paths (authentication, payments, data processing), slightly looser on UI. Once you ship, bring type coverage up. Developers who show judgment about when to be strict versus loose are more senior than those who apply rules rigidly.
Ask them to show you types they've written. Good types clarify intent and prevent mistakes. Bad types are overly complex or use any everywhere. Review code they've submitted; check if generics are constrained, if union types are discriminated, and if null safety is enforced. Bad TypeScript is worse than no TypeScript; it hides bugs while pretending to catch them.
Jest works great with TypeScript. Use ts-jest to run TypeScript tests. Write tests in TypeScript using the same tooling as your application code. Type safety extends to tests, which catches more bugs. Ask TypeScript developers how they test TypeScript code; the answer should include Jest or similar, with type-safe tests.
React + TypeScript is excellent. Look for developers who understand React.FC, component prop typing, useState/useContext typing, and asynchronous operations in React. Strong developers type props correctly without being overly verbose. They understand discriminated unions for component variants. Red flag: developers who don't know how to type React hooks or props.
No, they're very different. Java is statically compiled at the language level; TypeScript compiles to JavaScript at build time. TypeScript's type system is more flexible (union types, discriminated unions, conditional types). Developers from Java backgrounds often write overly strict TypeScript. Developers from JavaScript backgrounds struggle with thinking in types. Both can learn, but expect a learning curve.
