Hire a TypeScript DeveloperType-safe code, front to back.
TypeScript used to actually prevent bugs: strict types, safe APIs, and end-to-end type safety so mistakes surface at compile time, not in production.
By Parish Khan, senior developer since 2013
Updated
- Starting price
- $4,000
- Typical project
- $10,000 to $12,500
- Typical timeline
- 7 to 9 weeks
What TypeScript Development involves
TypeScript is only as useful as how strictly it is used. Sprinkle "any" everywhere and you get the cost of types with none of the benefit. I write TypeScript strictly: real types, safe API boundaries, and end-to-end type safety from database to UI.
The payoff is fewer production bugs, safer refactors, and code your team can change with confidence. I build entire products in strict TypeScript, front and back.
What you actually get
Strict, real types
No "any" escape hatches; types that actually catch mistakes.
End-to-end type safety
From database to API to UI, so a schema change surfaces everywhere it matters.
Safer refactors
Change code with confidence because the compiler has your back.
Estimate your TypeScript development cost
Answer three questions and pick any extras. You get a price range and timeline instantly, and can send it straight to me for a fixed quote.
Your estimate
About 3 to 4 weeks
A ballpark to plan with, not a quote. Your answers go along with the brief, so the fixed quote comes back faster.
Or skip the quote
Build it on the Build plan at $2,490/month instead. This estimate equals about 2 months of a plan, and the plan keeps going after launch. Pause anytime.
How the subscription works
TypeScript Development cost breakdown
What TypeScript development typically costs at three levels of scope. Every project still gets its own fixed quote.
| Scope | Cost | Timeline | What it looks like |
|---|---|---|---|
| Starter | $4,000 to $5,000 | 3 to 4 weeks |
|
| Typical | $10,000 to $12,500 | 7 to 9 weeks |
|
| Advanced | $19,500 to $24,500 | 13 to 16 weeks |
|
Starter
$4,000 to $5,000
3 to 4 weeks
- A new TypeScript codebase
- Under 10k lines
- One app
Typical
$10,000 to $12,500
7 to 9 weeks
- Tighten types in an existing TS project
- 10k to 50k lines
- Front end and back end share types
Advanced
$19,500 to $24,500
13 to 16 weeks
- Migrate JavaScript to TypeScript
- 50k+ lines or a monorepo
- Monorepo with generated API types
- All add-ons
What drives the cost
New code versus migration
Starting typed is cheapest. Migrating JavaScript grows with every untyped module and implicit any.
- A new TypeScript codebaseBase
- Tighten types in an existing TS project+$1,500
- Migrate JavaScript to TypeScript+$3,500
Codebase size
Typing effort scales with lines of code and how many modules depend on each other.
- Under 10k linesBase
- 10k to 50k lines+$3,000
- 50k+ lines or a monorepo+$7,000
Shared types across services
Sharing types between front end and back end, or generating them from an API, removes a whole class of bugs but needs setup.
- One appBase
- Front end and back end share types+$1,500
- Monorepo with generated API types+$3,000
A good fit if
- Teams adopting TypeScript or tightening a loose setup
- Businesses tired of preventable production bugs
- Projects that need to be safe to change over years
What is included
- Strict TypeScript configuration
- Typed API layer and data models
- End-to-end type safety across the stack
- Migration of JavaScript to TypeScript where needed
- Tests and CI type-checking
- Documentation
How it runs
No surprises and no black box. You see a live URL from week one.
- 1
Assess
Review the current type setup and its gaps.
- 2
Tighten
Strict config and real types across boundaries.
- 3
Build
New work fully typed, front to back.
- 4
Ship
Type-checked in CI and documented.
Typically built with
TypeScript
React
Next.js
Node.js
Zod
tRPC
Proof, not promises
Two ways to get TypeScript Development.
As a fixed-price project with a clear finish line, or as part of a monthly subscription where you add requests and never wait for a quote.
Monthly subscription
A senior developer on call for one flat price. Add unlimited requests, I ship them one by one. The price never moves while the work keeps coming.
- No quotes, ever
- Unlimited requests
- 1 to 2 day turnaround
- Pause or cancel anytime
- Shared request board
- You own all the code
from$990/month
See plansFixed-price project
One defined build with a clear finish line. You get a written scope, a timeline, and one number before any work starts.
- Fixed quote in one business day
- Milestone payments
- Launch, handover, and support window
from$1,500
Start a projectTypeScript Development FAQ
How much does TypeScript development cost?
TypeScript Development starts at $4,000. A typical mid-sized project runs between $10,000 and $12,500, and an advanced build between $19,500 and $24,500. You always get a fixed quote before work starts, and the cost estimator on this page gives you a ballpark in under a minute.
How long does TypeScript development take?
A starter project takes about 3 to 4 weeks, a typical one 7 to 9 weeks, and an advanced one 13 to 16 weeks. You see a live URL from the first week, so progress is visible the whole way.
What affects the cost of TypeScript development?
Three things move the price most: new code versus migration, codebase size, and shared types across services. Optional extras such as runtime validation with Zod or type checks and lint rules in CI add to the total.
Can you migrate JavaScript to TypeScript?
Yes, incrementally, so the app keeps shipping while types get added file by file.
Is strict mode worth it?
Yes. Strict mode is where TypeScript earns its keep. Loose types give you the cost without the safety.
Do you do backend TypeScript too?
Yes: typed APIs, Node services, and end-to-end type safety with tools like Zod and tRPC.
Often paired with
Want type-safe code?
Tell me about your project. I will build it so bugs get caught early.
Prefer one fixed price for one defined build? Start a project
You work with me directly, on a monthly plan or a fixed-price project. No agency layer, one person accountable for the build.