Hire TypeScript Developers — Full-Stack React + NestJS
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TypeScript Full-Stack Development — React, NestJS, React Native
The case for TypeScript isn’t about syntax — it’s about shared contracts across the stack. When your frontend, backend, and mobile app all speak the same typed language, you eliminate an entire class of integration bugs and make onboarding new developers faster.
CimpleO runs a TypeScript-first stack. Our developers don’t switch contexts between a JavaScript frontend and an untyped backend — it’s React + NestJS + React Native, all TypeScript, end to end.
What We’ve Built
ZeroDark — Shipyard Operations Platform — React (TypeScript) frontend, NestJS backend. HR management, crew scheduling, task assignment, and role-based access for a maritime company. Full TypeScript stack with shared type definitions between client and server.
Hoppn Food Delivery — TypeScript, NestJS, React Native. Progressive Node.js backend with typed API contracts consumed by both the web admin and the React Native mobile app. MangoPay, Twilio, Google Maps integrations — all typed.
Mertim Marketplace — NestJS + React Native marketplace. Complex domain model (sellers, buyers, couriers, payments) — TypeScript strict mode caught dozens of edge-case bugs before they hit production.
Why Full-Stack TypeScript Matters in Practice
Shared types across the API boundary. Define a DTO once in NestJS, import it in React. No more frontend bugs caused by a backend field rename that was never communicated.
Safer refactoring. When you rename a method or change a function signature, the compiler tells you everywhere it’s used — across the whole codebase, not just the file you’re editing.
Better onboarding. A developer joining the team reads types instead of documentation that may be out of date.
NestJS specifically. Angular-inspired architecture with decorators, dependency injection, and a module system. Our team has written about NestJS module design and Swagger integration in depth — this isn’t surface-level familiarity.
Engagement Models
Full-stack TypeScript team: React frontend + NestJS backend + React Native mobile, delivered together. One team, one codebase language, one point of contact.
Backend only: NestJS API, database schema, auth, third-party integrations.
Frontend only: React SPA or Next.js consuming your existing API. TypeScript-first, tested.
Migration: JavaScript → TypeScript for existing codebases. Incremental, low-risk, with measurable strictness targets.
Stack
- Frontend: React 18+, Next.js, TypeScript strict mode
- Backend: NestJS, Node.js, TypeScript, Prisma / TypeORM
- Mobile: React Native CLI, TypeScript
- State: Redux Toolkit, Zustand, React Query
- API: REST, GraphQL, WebSockets
- Auth: JWT, OAuth2, Passport.js
- Deployment: Docker, AWS, GCP, Vercel, Railway
Get a TypeScript Estimate
Describe your stack, team size, and what needs building. We’ll respond within 24 hours with a realistic scope assessment.
Frequently Asked Questions
What's the main advantage of a full TypeScript stack?
Shared types across the API boundary — define a DTO once in NestJS, import it in React. No more frontend bugs caused by backend field renames that weren't communicated. Safer refactoring: rename a method and the compiler tells you every call site across the whole codebase. Better onboarding: new developers read types instead of documentation that may be stale.
NestJS or Express — which Node.js framework?
NestJS for applications with complex domain models, multiple modules, and teams that benefit from Angular-inspired structure (decorators, dependency injection, modules). Express for simple APIs where you want minimal framework overhead. We use NestJS as our default Node.js framework — we've written extensively about its module architecture and swagger integration.
How much does full-stack TypeScript development cost?
A TypeScript API (NestJS) with auth, business logic, and integrations: $20,000–$60,000. A full-stack application (React + NestJS): $40,000–$120,000. React Native mobile added: +$30,000–$70,000. Dedicated full-stack TypeScript team: from $15,000/month.
Can you migrate our JavaScript codebase to TypeScript?
Yes. Incremental migration — introduce TypeScript compiler, start with strict: false, add types module by module, raise strictness over time. We set measurable strictness targets and track progress. Most migrations take 4–12 weeks of part-time work, not a full freeze.
Do you write tests in TypeScript projects?
Yes — Jest with ts-jest for unit tests, Supertest for API endpoint tests, React Testing Library for frontend components, and Playwright for end-to-end flows. All typed. Test infrastructure is included in every engagement.