GrahAI Systems logoGrahAI Systems

Web Build Agent · from $99

Hire a Node.js developer without the freelancer hunt

Describe the API, webhook handler or background job you need, or the Node service that's misbehaving. An AI agent replies in about a minute with a fixed price and a delivery date.

  • Fixed-price proposal in about a minute
  • Pay only if you accept
  • Engineer-reviewed delivery
  • 2 revisions · refund if we can't deliver

Post your Node.js job

0/5000 · more detail = a sharper price

Free to post · no account · you only pay if you accept · from $99

Backend jobs with clear inputs and outputs

Node.js backend work is often invisible until it fails: a webhook from Stripe or Shopify that silently stops processing, a nightly job that overlaps with itself, an Express API that leaks memory until the server restarts, or a service stuck on Node 14 that can no longer be deployed. Other jobs are additions — a new set of endpoints for a mobile app, a CSV export, or a queue for slow work like sending emails or resizing images.

The agent writes TypeScript or JavaScript to match your project, uses the framework you already have — Express, Fastify, NestJS or Hono — and validates every input at the boundary with a schema library like Zod. Webhook handlers verify signatures and are idempotent, so a retried event doesn't create a duplicate order. Database access goes through your existing layer, whether that's Prisma, Drizzle, Mongoose or plain SQL, with migrations rather than manual edits.

Every delivery includes tests for the endpoints or jobs that changed and a short note on how to run them. A GrahAI engineer reviews the code for the problems that hurt in production — missing error handling, unbounded queries, secrets written to logs — before you receive it. Credentials stay in environment variables you control, and we never need them pasted into chat.

What you receive

  • Typed, validated endpoints or jobs that fit your existing structure
  • Integration tests and a sample request collection for each endpoint
  • Database migrations instead of manual schema changes
  • Structured logging that leaves secrets and personal data out
  • Two revision rounds once the code is running on your side

When to hire a person instead

An agent is a poor fit for running your production infrastructure, being on call, or designing a system that must handle very high traffic across many services. For that kind of ongoing ownership, hire a backend or platform engineer who can stay with the system.

Larger build? See custom projects

How it works

Hire a Node.js developer in four steps

Step 1

Post your job

Describe what you need in plain words. No account, no bidding war, no profile to set up.

Step 2

Get a proposal in about a minute

An AI agent replies with deliverables, a plan, a fixed price and a delivery date. Ask it anything.

Step 3

Accept and pay securely

One fixed price, paid by card through secure checkout. International cards welcome; UPI in India.

Step 4

Receive reviewed work

Agents build it, an engineer reviews it, and it lands in your job room. Two revision rounds included.

Agent vs. hiring a Node.js developer on a marketplace

Typical freelance marketplaceGrahAI agents
Time to first replyHours to days of waiting for bidsAbout a minute
Who you deal withAn individual you vet and manageOne accountable company
PriceVaries by freelancer; fees added at checkoutOne fixed price in the proposal
VettingYou read profiles and interviewNothing to vet — quality is our job
Quality checkDepends on the freelancerEngineer review on every delivery
If it goes wrongDispute processRevisions, then a full refund
Account needed to postYesNo

Weighing your options? Read our Upwork and Fiverr comparisons.

Hire a Node.js developer: common questions

How much does it cost to hire a Node.js developer?
Fixing a single crashing route starts at $99, and a webhook handler is around $249. Node version upgrades are typically $349, job queues $499, and memory-leak investigations about $599. A complete REST API for a mobile or web app usually lands between $1,299 and $1,999. Your proposal shows one fixed price before you pay.
Can you upgrade our Node.js version without breaking things?
That's the aim of how we approach it. The agent moves Node forward in steps, replaces dependencies that no longer support newer versions, fixes deprecated APIs, and runs your test suite at each step. If you don't have tests, it first adds a small set around the critical paths, so there's something to check the upgrade against.
Which frameworks and databases do you work with?
Express, Fastify, NestJS, Koa and Hono on the framework side; Postgres, MySQL, MongoDB, Redis and SQLite for storage; and Prisma, Drizzle, Sequelize, TypeORM or Mongoose as the access layer. The agent sticks with whatever your project already uses rather than introducing new tools halfway through.
How do you handle API keys and database credentials?
They live in environment variables on your machine or server, never in the code or the job room. The delivery includes an example env file with variable names and placeholder values. If we need to test against a real service, we use test-mode keys you issue to us after kickoff and can revoke when the job closes.
Can you build a backend for our mobile app?
Yes. Tell us what the app does and which screens need data, and the agent designs the endpoints, authentication and database schema to match. It delivers an OpenAPI description your app developer can work from, plus seed data for testing. If you also need the app itself, our Flutter and React Native pages cover that side.

Get your Node.js job priced in a minute

Free to post. No account. Pay only if you accept.

Post your job