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Hire MERN stack developers

Engineers who work across MongoDB, Express, React and Node, joining your team on a defined scope. They write the schema, the API and the interface, and they stay on after launch to run it.

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What they do

Hire MERN stack developers, end to end.

React front ends

Component structure, state handling, routing and forms. We build interfaces that are quick to load, work on a phone, and that another developer can pick up and extend without a rewrite.

Node and Express APIs

REST or GraphQL endpoints, authentication, role handling, validation and rate limits. Written so the contract between front end and back end is explicit and does not drift over time.

MongoDB schema and query design

Document design that suits how you actually read the data, with indexes chosen against real query patterns. We look at slow queries early rather than after the collection has grown.

Integrations and third-party services

Payments, email, storage, CRM, ERP and internal systems. We handle retries, failed webhooks and the awkward states that appear once real traffic starts hitting the integration.

Rescue and refactor work

Taking over a MERN codebase somebody else left behind. We read it, write down what it does, get it running and tested, then change it in steps rather than all at once.

AI features inside the app

Where it earns its place, we add agents or copilots to a MERN application with guardrails, logging and a way to roll back. In production, not as a demonstration.

How it runs

Plan. Build. Run.

01

A 30 minute call

You tell us what you are building, what already exists and where the pressure is. We ask about your stack, your deadlines and who the engineer would work alongside. No deck, no pitch.

02

Fixed scope, timeline and price

We write down what the engineer will work on, how long it takes and what it costs, before anything starts. If we think the scope is wrong or too large for the timeline, we say so at this stage.

03

Build in the open

The engineer joins your standup, your board and your repository. Work goes out in small reviewable pieces, so you see progress weekly rather than waiting for one large handover at the end.

04

Then we run it

After launch you can keep us on a managed retainer. Monitoring, fixes against response targets, security updates, improvements and a monthly report on what changed and what broke.

Why infoloop

We do not hand over and leave.

  • We stay after the handoverMost agencies finish the build and disappear. Our whole model is build then run, so the people who wrote the code are the people who keep it alive.
  • Production is the standardWe ship things that carry real traffic and real money, with monitoring, rollback and error handling. A working demonstration is not the finish line for us.
  • Price agreed before we startFixed scope, fixed timeline, fixed price after a 30 minute call. You are not signing up to an hourly meter that quietly runs on for months.
  • One team across the stackThe same people handle the database, the API and the interface. Nothing gets stuck between a front end team and a back end team who never speak.
  • Plain reportingYou get a monthly written report of what changed, what failed and what we fixed. If something went wrong, it is in the report.

What you get

Every engagement includes these, in writing, before work starts.

  • An engineer working in your repository, your board and your standup, on an agreed scope
  • Written scope, timeline and price agreed before a single line of code is committed
  • API documentation kept current, so the front end and back end contract is never guesswork
  • MongoDB schema and index decisions written down with the reasoning behind each one
  • Deployment and environment setup, with a documented way to roll a release back
  • Handover notes, so your own team can carry the work on without us if you choose

Who this is for

Three situations where this is the right call.

A product roadmap with no one to build it

You have the specification, the designs and the customers waiting, but hiring a permanent engineer will take three months you do not have. You need someone building this quarter, not next.

An inherited codebase nobody understands

A previous developer or agency built your MERN app and left. It works, mostly, but nobody on your team can safely change it. You need someone to read it, document it and make it maintainable.

A team stretched too thin to ship

Your engineers are keeping the current product running and every new feature slips. You need extra capacity on a defined piece of work without adding permanent headcount to the payroll.

Questions

What buyers ask us first.

What does it cost to hire a MERN stack developer through infoloop?
We do not publish a rate card, because the honest answer depends on the scope. After a 30 minute call we write down what the engineer will work on, how long it takes and what it costs, as a fixed figure agreed before the work starts. You are not billed against an open-ended hourly meter. If the scope changes mid-way, we price the change separately and you decide whether to take it. If we think what you are asking for cannot be done properly in the time or budget you have described, we tell you on that first call rather than after you have signed.
How quickly can an engineer start?
That depends on current availability, which we will tell you honestly on the call rather than promising a date we cannot hold. What we can commit to is the sequence: a 30 minute call, then a written scope with a timeline and a price, then a start date you agree to before anything begins. We do not put someone on your project and work out the plan afterwards. If we have nobody suitable free in the window you need, we say that plainly instead of taking the engagement and stretching a person across two projects.
Do they work as part of our team or separately?
As part of your team. The engineer joins your standup, works in your repository, picks up tickets from your board and talks directly to your product and design people. That is the point of a hire engagement rather than a project handover. If you would rather we ran the work as a self-contained project with our own process and reported into you at intervals, we can do that too, but we will agree which shape you want during the scoping call so nobody is guessing.
What happens after the build is finished?
You have two options and both are fine with us. You can take the handover: documentation, deployment instructions, schema decisions and the reasoning behind them, so your own team carries it on. Or you keep us on the managed retainer, which is the half of our business we call we run. That covers monitoring, fixes against agreed response targets, security updates, ongoing improvements and a written monthly report of what changed and what broke. Most of the value in software arrives after launch, so we would rather not disappear at that point.
Can you take over a MERN codebase somebody else built?
Yes, we take on that work. The approach is deliberate rather than heroic. First we read the code and write down what it actually does, which is often not what the previous documentation claims. We get it running locally and in a staging environment, add tests around the parts you cannot afford to break, then change things in small reviewable steps. We do not start with a rewrite. Rewrites are usually a way of avoiding the work of understanding the system, and they take longer than anyone expects.
Why MERN rather than another stack?
MERN suits products where one team needs to move across the whole stack in JavaScript, where the data model is still changing shape, and where you want a React interface talking to your own API rather than a rigid platform. It is not right for everything. If your problem is better served by a different database, a managed platform, or by Webflow or Shopify rather than a custom application, we will say so on the call. We would rather turn down a build than put you on a stack that costs you more to run for the next five years.

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Tell us what you need built. Book a 30 minute call

Bring your scope, your deadline and your existing codebase if there is one. You will leave the call with a clear view of what we would do, how long it takes and what it costs. No deck, no pressure to sign anything.

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