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BACKEND

📘 TypeScript

Type-safe JavaScript for reliable, maintainable applications

⏱️ 6+ Years
📦 30+ Projects
✓ Available for new projects
Experience at: Flowrite• Anaqua• Last Call Media• Pipelinepharma• The Virtulab

🎯 What I Offer

TypeScript Development

Build type-safe applications from scratch.

Deliverables
  • Project setup and configuration
  • Type system design
  • API type definitions
  • Testing with types
  • Build optimization

JavaScript to TypeScript Migration

Migrate existing JavaScript codebases to TypeScript.

Deliverables
  • Migration strategy
  • Incremental adoption
  • Type inference setup
  • Strict mode enablement
  • CI/CD integration

Full-Stack TypeScript

Build end-to-end TypeScript applications.

Deliverables
  • Shared types frontend/backend
  • API type generation
  • Monorepo setup
  • Type-safe ORMs
  • Runtime validation

🔧 Technical Deep Dive

TypeScript Best Practices

Strict Mode - Enable all strict checks No Any - Avoid any type, use unknown instead Discriminated Unions - Type-safe state machines Generics - Reusable type-safe components Utility Types - Partial, Pick, Omit, etc.

TypeScript Stack

Backend: Node.js, Express/Fastify, NestJS Frontend: React, Next.js, Vue 3 ORM: Prisma, TypeORM, Drizzle Validation: Zod, io-ts, class-validator Testing: Jest, Vitest with type checking Build: tsc, esbuild, swc

📋 Details & Resources

TypeScript Patterns

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// Discriminated Unions for Type-Safe State
type RequestState<T> =
  | { status: 'idle' }
  | { status: 'loading' }
  | { status: 'success'; data: T }
  | { status: 'error'; error: Error };

// Generic API Response Handler
async function fetchData<T>(url: string): Promise<RequestState<T>> {
  try {
    const response = await fetch(url);
    if (!response.ok) {
      throw new Error(`HTTP ${response.status}`);
    }
    const data: T = await response.json();
    return { status: 'success', data };
  } catch (error) {
    return { status: 'error', error: error as Error };
  }
}

// Zod Schema with TypeScript Integration
import { z } from 'zod';

const UserSchema = z.object({
  id: z.string().uuid(),
  email: z.string().email(),
  name: z.string().min(1),
  role: z.enum(['admin', 'user', 'guest']),
  createdAt: z.string().datetime(),
});

type User = z.infer<typeof UserSchema>;

function validateUser(data: unknown): User {
  return UserSchema.parse(data);
}

TypeScript Configuration

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{
  "compilerOptions": {
    "target": "ES2022",
    "module": "NodeNext",
    "lib": ["ES2022"],
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "resolveJsonModule": true,
    "declaration": true,
    "declarationMap": true,
    "sourceMap": true
  }
}

Frequently Asked Questions

What is TypeScript development?

TypeScript is a typed superset of JavaScript that compiles to plain JavaScript. TypeScript development involves building type-safe applications for frontend (React, Vue) and backend (Node.js, Deno). TypeScript catches errors at compile time and improves code maintainability.

How much does TypeScript development cost?

TypeScript development typically costs $100-150 per hour. Rates are similar to JavaScript, though TypeScript projects may take slightly longer initially while paying off in reduced bugs and easier refactoring. New projects benefit most from TypeScript.

Should I use TypeScript or JavaScript for new projects?

Use TypeScript for: team projects, large codebases, long-term maintenance, or complex business logic. Use JavaScript for: quick prototypes, small scripts, or teams unfamiliar with types. For most production applications, TypeScript is worth the small learning curve.

Can you convert my JavaScript codebase to TypeScript?

Yes. I handle gradual TypeScript adoption: start with allowJs, add types incrementally, configure strict mode progressively, and eventually reach full type coverage. I’ve migrated codebases from 0% to 100% TypeScript coverage.

Do you follow TypeScript best practices?

Yes. I implement: strict mode configuration, proper type inference (avoiding unnecessary annotations), discriminated unions for complex types, utility types, proper null handling, and minimal use of any. I write TypeScript that helps the compiler help you.

Experience:

Case Studies: LLM Email Assistant | Next.js Performance Optimization | GraphQL API Modernization

Related Technologies: Node.js, React, Next.js, GraphQL

💼 Real-World Results

AI Email Platform

Flowrite
Challenge

Build type-safe backend handling complex LLM workflows.

Solution

Full TypeScript stack with strict mode, Zod validation, and shared types across services.

Result

Fewer runtime errors, easier refactoring, faster development.

Enterprise UI Components

Anaqua
Challenge

Build reusable React components with strong type contracts.

Solution

TypeScript React components with strict props, generics for flexibility, and Storybook documentation.

Result

Consistent, reusable component library across the platform.

API Type Generation

Pipelinepharma
Challenge

Keep frontend and backend types in sync.

Solution

OpenAPI spec generation from TypeScript, automatic client generation.

Result

Zero type mismatches between frontend and backend.

⚡ Why Work With Me

  • ✓ 6+ years of production TypeScript experience
  • ✓ Strict mode advocate, proper typing, not 'any' everywhere
  • ✓ Full-stack TypeScript, backend and frontend
  • ✓ Migration expertise, JavaScript to TypeScript
  • ✓ Build optimization, fast compilation, proper configuration

Build with TypeScript

Within 24 hours

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