Hire React Developers

Hiring React developers through CodigoDelSur means adding senior React engineers, employed by us, to the team that already owns your web application. They work in your repository, your sprints and your code review, on the React codebase you have today, including the parts still written in something older. CodigoDelSur has been building software from Montevideo, Uruguay since 2007, for companies in the United States and the rest of the world.

It is the right move when the frontend is where your roadmap is stuck and you already know what you want built. It is the wrong move when the real bottleneck is an API nobody owns or a product decision nobody has made, because a React developer will ship screens against both and neither gets better. We tell you which one you are on the first call.

Is hiring a React developer the right move for you?

It is when the constraint is frontend capacity and someone on your side can review the pull requests.

Yes, if:

Your product is a React or Next.js application, or an older Backbone.js or jQuery frontend you want moved onto React without stopping releases.
The backlog is full of frontend work that is already defined: screens, flows, component refactors, accessibility fixes.
Someone on your team reviews pull requests and owns the component conventions.
You need people working in your day, not handing work off at midnight.

No, if:

The screens are slow because the API behind them is slow. Hire for the backend first, or take both on as one team.
There is no design and no product owner yet. A React developer builds what is asked for, and nobody is asking.
You need a whole web product built from nothing with one company accountable for it. That is full-cycle product development.

How it works, from first call to first merged pull request

Five steps, and the React part starts on the first call: we ask about your codebase before we ask about anything else. Every step ends either with a person working in your repository or with a clear reason not to continue.

Intro call, 30 to 45 minutes. Which React you run and what sits around it: Next.js or not, TypeScript or JavaScript, how state and data fetching are handled, what is still legacy. Who will review the work, and what the first month should ship. If the problem is not frontend capacity, this is where we say so.

Written role brief. One page: responsibilities, the parts of the codebase the engineer will own, seniority, overlap and start date. Nothing moves until you sign it off, because every profile is measured against it.

Named profiles. We check our bench first and tell you whether the React engineer you need is on it today or has to be recruited. Each CV names the projects the person worked on and what they did in them, not an anonymized list of skills.

You run the technical interview. Your process: a pairing session, a review of a real pull request, a take-home, whatever you already use for your own hires. You can turn down anyone we propose without giving a reason.

First day in your repository. One standard services agreement, signed once. We handle equipment, accounts, and payroll. The engineer joins your standup on day one, picks up a small ticket that touches your components and your deployment process, and aims for a first merged pull request that same week.

How long it takes to add a React developer

Five business days from signed agreement to first day as standard, and as soon as the next business day when the engineer is already on our bench.

Stage	Typical time
Intro call to written role brief	1 business day
Role brief to first profiles, if the profile is on our bench	1 business day
Role brief to first profiles, if we have to recruit	5 business days
Interviews	Your calendar, usually within a week
Signed agreement to the engineer's first day	5 business days as standard, or as soon as the next business day if the engineer is on our bench and you are ready
First day to first merged pull request	3 to 5 business days

The row that decides your date is the second one against the third. Ask every supplier which of the two you are in before you sign. We answer it on the first call.

What our React developers work on

Production React applications that already have users, and frontends that were not React yet when the work started.

Work	What it involves	Where it shipped
Legacy frontend migration	Moving sidebar applications off Backbone.js and jQuery onto React and Next.js, with feature parity and accessibility as acceptance criteria	Help Scout
Marketing sites on Next.js	Taking over an unfinished site redesign and moving its content from Sanity v2 to v3	Leadpages
Operations dashboards	Data heavy interfaces where people reconcile records and resolve exceptions all day	Ware
Rescue and rebuild of a business application	A responsive reskin and UX revamp of an existing platform, then new modules on a React frontend over a Java backend	BlueCimarron
A custom ERP taken over and developed	React and Ruby on Rails in an ERP that runs buying, lab testing, export, import and inventory for a trading business	Caravela
Web interfaces for an IoT platform	The web side of a platform whose field apps work offline, next to Node.js and TypeScript services	Milc Group

The frontend stack is React, Next.js, TypeScript and JavaScript, with legacy work in Backbone.js and jQuery. The same company staffs Node.js, Ruby on Rails, Java and GraphQL, so a React engineer here always has colleagues who work on the API side. Seniority runs from mid level to tech lead, and we do not place junior engineers in these roles.

What it costs to hire a React developer

What a React developer costs depends on seniority and on what the role covers, and you get the number in writing with the role brief, before you commit to anything.

The minimum project size is $10,000, roughly one engineer for one month, and the shortest engagement we sign is two weeks, one sprint. There is no recruiting fee, no placement fee and no management fee, and the project manager on our side is included at no additional cost. Billing is per sprint, Net 14, or monthly if your finance team prefers, with volume discounts of 5 percent from five people and 10 percent from seven.

If you are not sure how much React work there is, start with one engineer for one sprint. It is a real engagement, not a trial with different terms.

The React projects behind this page

Five clients with a published case study, all of them software people work in all day: an ERP, a support platform, a trading system, an operations dashboard and a farm management platform.

BlueCimarron is a cloud ERP for mid-market companies, bringing finance, accounting, inventory, CRM, projects, manufacturing and operations into one system. Billing is where its users live, and it is where an interface problem becomes a money problem: an invoice issued against the wrong record, a report that does not reconcile, a screen that does not work on the laptop somebody actually uses. The work started with a rescue, a full responsive reskin and a UX revamp of the existing billing platform, and went on to the Billing, Accounting and Reports modules, with payment processing through USIO, on a React frontend over a Java backend on AWS. The engagement ran for more than two years, from 2023 to 2025.

Help Scout, the customer support platform, brought our engineers into its product teams in November 2024, and the engagement is ongoing. The work started on the React application and the Backbone.js code running beside it, and moved on to migrating about five sidebar applications off jQuery and Backbone onto React and Next.js, with feature parity and accessibility as acceptance criteria and a rollout in small releases that never interrupted live support.

Ware replaced manual warehouse inventory counts with indoor drones, and was later acquired by Gather AI. Our engineers worked on its React web interface for close to three years, from 2020 to 2023: the dashboard where drone captured locations are reconciled against expected stock, and the exception views where a person resolves whatever does not match.

Caravela trades green specialty coffee, and its operations run on Atlas, a custom ERP. We took over the Atlas codebase and developed it for close to four years, from 2022 to 2025, together with Roaster Hub, the platform roasters use to source coffee and manage their contracts. The stack is Ruby on Rails and React, on Azure.

Milc Group builds technology for dairy operations. For nine years we built every software layer above its hardware, including the React web interfaces, next to Node.js and TypeScript services, native field apps and machine learning features, until a full handover to Milc's own engineering team.

React developers through staff augmentation, a dedicated team or full-cycle product development

Three different products get sold under the same word, "outsourcing". They are not interchangeable and picking the wrong one is the most expensive mistake in this category. Most React hiring belongs in the first column, and it lands in the wrong one more often than buyers expect.

	Staff augmentation	Dedicated team	Full-cycle product development
Who owns the roadmap	You	You	Shared, we run discovery
Who manages day to day	Your engineering manager	You, with a CodigoDelSur project manager coordinating on our side at no extra cost	Our project manager
What you get	Individual engineers inside your team	A team shaped around your product, staffed and coordinated by us	A product, from discovery to store release
You need to have	Technical leadership with spare capacity	A product owner and a clear roadmap	A budget and a problem worth solving
React work it fits best	Features, refactors and migrations inside a React codebase you already run	A web product area owned end to end, frontend and API, on one release cadence	A new web application, from design to launch
Typical size	1 to 4 people	4 to 12 people	Scoped per project
Minimum commitment	Two weeks, one sprint	Two weeks, one sprint	Quoted per project
Best when	The work is defined and you are short on hands	You own a product area and want it staffed and coordinated as one team	You need the thing to exist and you do not have an engineering org

When this page is not your answer

Do not hire a React developer to fix a frontend that is slow because of the API behind it, or confusing because nobody decided how it should work. Both arrive as frontend tickets and neither is a frontend problem. The first needs backend capacity and the second needs a product owner and a designer, and adding React engineers to either one produces more screens with the same flaw. If you cannot tell which one you have, a dedicated team that covers frontend and API together will show it inside the first sprint, and we will usually see it on the first call.

Where "taking over a React codebase" and "short-term work" fit

Neither is a fourth model. If another supplier built your React application and you want to switch, we review the codebase first and then work on top of it, either with engineers embedded in your team through staff augmentation or with a dedicated team taking the application over. If the work is short, the two week minimum means one engineer for one sprint, for a migration spike or an accessibility pass, is a complete engagement.

Frequently asked questions

Do your React developers work with Next.js and TypeScript?

Yes. Next.js and TypeScript are part of the frontend stack we staff, alongside React and plain JavaScript. At Leadpages our engineers took over an unfinished redesign of the marketing site on Next.js and moved its content from Sanity v2 to v3. A codebase that mixes TypeScript and JavaScript, as most codebases of a certain age do, is ordinary work for us, and moving it to TypeScript file by file while it keeps shipping is not a rewrite.

Can a React developer take over a business application another supplier built?

Yes, and we start by making what exists usable before adding to it. At BlueCimarron the first job was a responsive reskin and a UX revamp of the billing platform its users already depended on, and only then the new Billing, Accounting and Reports modules. At Caravela we took over the codebase of a custom ERP and kept developing it for close to four years. A rewrite that stops the product for a quarter is almost never the cheaper path.

Can the same engineer work on our React web app and our React Native app?

Sometimes, and we tell you when it is a stretch. The two share the language and the component model, not the platform: React Native adds store releases, native modules and device testing that a web engineer has not necessarily done. If your work is mostly web with the occasional mobile ticket, one engineer can cover both. If both are active products, you want a React Native developer as well.

What time zone do your engineers work in, and how much overlap will I get?

Our engineers work 10:00 to 19:00 Uruguay time, which is UTC minus 3. That covers the entire US East Coast working day, five to six hours of live overlap with the West Coast, and an afternoon overlap with Europe. The schedule is set that way deliberately: shifting the day an hour later widens the Pacific overlap without asking anyone to work nights, and it is the reason this arrangement is still working in month twelve rather than quietly falling apart in month three.

How fast can you actually start?

Five business days from signed agreement to first day is the standard, and if the engineer is already on our bench and your side is ready to receive them, they can start as soon as the next business day. What varies is finding the right person, not starting them: if the profile is on our bench you get CVs one business day after you sign off the role brief, and if the role has to be recruited, first CVs take about five business days. We tell you which of the two you are in on the first call, before you have signed anything, because that is what actually moves your start date.

What happens if the engineer is not working out?

You tell your account manager and we replace the person at our cost. There is no charge for the search and no penalty for asking. The outgoing and incoming engineers overlap for ten business days so that context, access and work in progress transfer inside the engagement instead of landing back on your team, and those ten days are not billed: during the handover you keep paying exactly what you were paying for one engineer. We would rather absorb that than have you carry a bad fit for a quarter, and a company that will not put a replacement policy in writing is telling you something.

Who owns the code and the intellectual property?

You do, exclusively. Everything created for you as part of the work is assigned to you with full title guarantee: source code, application logic, APIs, integrations, data models, configurations, UI and UX designs, documentation and any derivative works. The assignment covers the deliverables as they are created, it is not conditional on final payment, and it is not a licence back to you, it is ownership. We also warrant that what we deliver does not infringe any third party's intellectual property, and where third party material is involved we secure the consents for both sides first. For our own pre existing components that were not written specifically for you, you get a non exclusive, irrevocable, royalty free licence to use, copy and modify them, so nothing we bring with us can be used to lock you in later. Every CodigoDelSur employee signs a non disclosure agreement and an intellectual property assignment as a condition of employment. In practice we also work inside your repositories and your cloud accounts, so in most engagements the code never lives anywhere else to begin with.

Will the engineer work only for us?

A full time engineer works for one client only. If you take someone full time they are on your product and nothing else: your standups, your sprint planning, your Slack, and for practical purposes they are part of your team, with the difference that their employment, payroll and career are our responsibility. If you only need part of a person we do offer part time engineers, and a part time engineer is assigned to a maximum of two projects, never more. We tell you which of the two you are getting before you sign, because "dedicated" is a word this industry uses loosely.

Tell us what your React codebase needs

Tell us which React you run, what the first month should ship and who will review the work, and we will tell you on the same call whether the engineer is on our bench or has to be recruited, and what that means for your start date.