Frontend development in Miami
Spanish runs longer than English, and Brazilian Portuguese often longer still. A layout designed in English and translated at the end breaks in ways that only show up once a real user in São Paulo or Bogotá opens it: buttons that wrap, tables that overflow, a currency shown with the wrong separators. For Miami products serving both Americas, that is not polish. It is whether the second market trusts the product.
We build frontends in React and Next.js with localisation designed in from the first component: strings out of the code, number, date and currency formatting through the platform's own internationalisation APIs, and layouts tested at the longest language rather than the shortest. We also build the dull screens fintech needs, such as transaction histories, statements and dispute flows, so they stay fast with years of data behind them.
Miami's software buyers tend to face south. Many of the companies that set up here in the last few years came for the same reason: it is where a US-incorporated business can sit next to its Latin American customers, investors and staff. Cross-border payments, remittances, neobanks, crypto infrastructure and the US arms of Latin American companies make up a large part of the local technology market, alongside real estate, hospitality and trade. The systems they need are rarely built for one country.
That shapes the work. Money movement is the core of the product rather than a feature bolted onto it: idempotent payment calls, a double-entry ledger, reconciliation jobs that compare your records against a partner's settlement file every night and flag the difference. The product has to handle Spanish and Brazilian Portuguese properly, validate local ID numbers and address formats, and settle through rails such as Pix in Brazil and SPEI in Mexico as well as cards. Crypto products add wallets, chain indexers and custody integrations, and the same principle applies: your database has to agree with the chain, and when it drifts, somebody needs a report saying where. Real estate, hospitality and trade bring their own version of the problem, usually a workbook that runs the business and quietly disagrees with its copies.
The hiring market has moved with the migration of finance and technology firms from New York and California. Built In puts the average base salary for a software engineer in Miami at around $145,000, and engineers who are bilingual and have shipped payments work are the hardest seat to fill. That is the seat we fill for a defined build: a payments integration, a reconciliation system, a second-country launch, or the months while a permanent hire is found. Work starts with a fixed-price two-week piece, and the code belongs to you from the first commit.
We move our working day for Florida. Four hours of every working day overlap with your morning in Eastern time, stand-up included, so calls, code review and decisions happen live with the engineer who writes the code. Everything else is written down where you already work, and runbooks and architecture notes are written as we go, so the next engineer who joins can read how the money moves.
We are the right fit for a defined build: a payments integration, a reconciliation system, a second-country launch. Senior capacity starts within days, the first piece is a fixed-price two-week engagement, and we can cover the months while a permanent hire is found. Agencies serving Miami's fintech, hospitality and retail brands can put the work under their own name.
Four ways this arrives.
We measure on real devices and real traffic first, not a lab score on a fast laptop. The fix is usually less JavaScript: a smaller bundle, images sized for the screen, and third-party scripts that stop blocking the first render.
A procurement checklist, a customer complaint, or a letter from a lawyer. We fix the causes rather than the line items: real buttons, labelled forms, focus that lands somewhere sensible, and automated checks in CI so it stays fixed.
Global state that everything reads, no types, and three versions of the same modal. We add TypeScript file by file, put tests on the flows that make money, and move shared pieces into one component library as screens are touched.
Usually for search visibility or first-load speed. We move it route by route behind the same URLs, so the old app keeps serving while the new one takes over, and nobody has to sign off a risky weekend cut-over.
A Next.js web app with five operational dashboards and Tableau reports rendered in place, without a second login.
Read the write-up →Asked by Miami teams.
How do you work with teams in Miami?+
We are in Bengaluru and move our working day for Florida, so four hours of every working day overlap with your morning in Eastern time, stand-up included. Calls, code review and decisions happen in that window. Everything else is written down in your own tools, whether that is Slack, GitHub or Linear, and the person on every call is the engineer who writes the code.
Can you build for Latin American markets as well as the US?+
Yes, and it is more than translation. Mexican and Argentinian Spanish differ, Brazilian Portuguese is its own language, and ID numbers, address formats, currencies and instalment payments all change by country. We design localisation into the first component, format money through the platform's own internationalisation tools, and integrate the payments provider you have chosen, with room for a second provider and local rails such as Pix and SPEI.
How does your rate compare to hiring in Miami?+
Built In puts the average base salary for a software engineer in Miami at about $145,000, before equity and benefits. Our published rate is $35/hour, or $5,400 a month for an embedded engineer, with a $5,000 minimum. There is no recruiting time and no employment overhead, and work starts within days of the call. The first piece is a fixed-price two-week engagement at $2,800, so you judge us on working code.
Can you work white-label for a Miami agency?+
Yes. Miami agencies regularly win fintech, hospitality and ecommerce projects that need more engineering than the in-house team can take on at once. We work under your name as part of your team, so your client deals with you and the work arrives as yours. The NDA comes before any specifics, the code belongs to the client from the first commit, and runbooks and architecture notes are written as we go.
Do we need to move to Next.js?+
Not always. If the app sits behind a login and nobody finds it through search, a well-built React single-page app on Vite is simpler to host and easier to reason about. Next.js earns its keep when first load and search visibility matter, or when you want rendering close to the data. We will tell you which case you are before anyone rewrites a route.
Can you work from our Figma files?+
Yes, and we will ask questions about them. Designs rarely show the loading state, the empty state, the error, or what happens when a name is twice as long as the mock-up assumed. We raise those early and propose something, rather than inventing it quietly in code and leaving your designer to find out in review.
Will you build us a design system?+
We will build the one your product needs, which is usually smaller than people expect: design tokens, the components you actually use, and Storybook to show them. We extract it from the screens you already have rather than designing it in isolation, because a component library nobody migrates to is just a second way of doing things.
How do you handle accessibility?+
We build to WCAG 2.2 AA by default, test with a keyboard and a screen reader, and run automated checks in CI so regressions are caught before they ship. Automated tools find only part of the problem, so we also test the key journeys by hand: sign-up, checkout, and anything a user does every day.
Do you only do the front end, or the API as well?+
Either. A lot of front-end pain is really an API shaped for a different screen, and when that is the case we can fix both sides. If your backend team owns the API, we write down what the front end needs from it and agree the contract with them, rather than working around it in the browser.