DEV.co
Miami, FL · Custom Software + AI

Custom software for Miami — built the AI-native way.

We pair senior engineers with an AI-accelerated delivery model to ship custom software for Miami's fintech, crypto, and LatAm-facing operators — without the fragile output that gives AI a bad name.

Senior-only engineering · AI-accelerated delivery · you own 100% of the code

AI changed the economics of custom software. We rebuilt our process around it.

Miami has emerged as one of the fastest-growing fintech, crypto, and Latin-America-facing SaaS markets in the country — anchored by Brickell's financial firms, Wynwood's tech transplants, and an active flow of US/LatAm cross-border business. Senior hires are six figures, months out, and picked over by both local and remote employers. AI changes the math, but only when senior people own the parts AI gets wrong.

On a Miami fintech, crypto, or PropTech build, AI handles the repetitive 70% — schemas, dashboards, glue, first-draft UI in two languages. The 30% that punishes you in production is the cross-border, multi-currency, multi-language layer: rounding errors that flip a number across a peso boundary, KYC flows that pass dev but fail at LatAm document formats, and settlement code that loses idempotency the first time a rail goes down. Raw AI output writes those bugs cleanly.

We build for Miami operators — fintech and crypto platforms shipping toward compliance, cross-border payments and remittance tools, real-estate and PropTech platforms riding the South Florida boom, and B2C apps with bilingual UX. Our model: AI handles scaffolding and the repetitive 70%; a senior engineer owns architecture, security, and signs off on every change.

Show, don't tell

AI writes the first draft. A senior engineer signs off.

Every change runs through review for security, tests, and architecture before it ships — that review is the product.

delivery.tstypescript
const draft = await ai.generate(spec)          // minutes, not daysreview(draft, { security: true, tests: true, architecture: true })// ✗ rejected: currency conversion using floats on a settlement amount → minor-unit integers + boundary test// ✓ merged: idempotent retry on cross-border rail, locale-correct date and number formatting
Every change
AI velocity + human judgment
tests + security review built in
you own 100% of the result

On a Miami fintech or PropTech build, the failure modes are float-math on money, locale bugs that surface in production, and non-idempotent settlement. Senior review catches them before they hit a customer or a regulator.

What we build for Miami companies.

Fintech

Fintech & payments platforms

Customer-facing apps, ledgers, and risk pipelines for regulated, data-heavy products.

Real Estate

PropTech & real-estate software

Listing platforms, tenant portals, and operations tools for owners, brokers, and managers.

Commerce

eCommerce & marketplaces

Storefronts, marketplaces, and merchant tools built for conversion and scale.

AI

AI applications

Copilots, RAG, search, and agents grounded in your data, with guardrails and evals.

Product

SaaS platforms

Multi-tenant products with auth, billing, and dashboards — MVP to scale.

Internal

Internal tools & copilots

Operations tooling that replaces the spreadsheet-and-tribal-knowledge workflow.

Senior, on-shore, AI-accelerated

A senior team that moves at AI speed.

You work with senior engineers in Eastern Time who own architecture and cross-border quality — fitting into a Brickell trading-firm rhythm, a Wynwood startup standup, or a Coral Gables product team — not a junior pool with raw AI output bolted on.

Miami's senior pool is split between transplants from NYC and SF and a smaller homegrown bench — both fully booked. An AI-native team gets you shipping this week, flexes monthly, and doesn't compete for the same Brickell office floor.

Talk to an engineer

Traditional Miami dev shop vs. AI-native.

Traditional AgencyDEV.co (AI-native)
Time to working softwareMonthsDays to weeks
CostFull senior rates, all hoursLower — AI removes the rote work
Code qualityGood (if senior)Same bar — every change reviewed
AI riskContained by senior review + tests
You own the codeUsuallyAlways — full repo on day one
Scales with youSlow to staff upFlex up or down monthly
2–3×
faster than traditional development
1 wk
to a working prototype
100%
code ownership at handoff
30 days
post-launch support included

Common questions from Miami teams.

Do you work with Miami companies?
Yes — we serve Miami, Hialeah, West Palm Beach, and Orlando companies with senior, on-shore engineers in Eastern Time. Most collaboration is remote-first, with on-site available for kickoffs and key milestones.
Do you build for cross-border / LatAm-facing products?
Yes — bilingual UX, multi-currency, multi-region data residency, and the regulatory patterns that cross-border products run into. We architect for the realities of LatAm payment rails, KYC, and language without bolting them on at the end.
Can you build for multi-currency and multi-jurisdiction?
Yes. We use minor-unit integers on money from day one, treat locale and currency as first-class inputs (not late additions), and architect KYC and data-residency flows around the realities of LatAm and Caribbean regulation. We've been through the rounding bugs so you don't have to.
Is AI-built software production-ready?
Yes — when a senior engineer reviews every output, adds tests, and hardens it. The horror stories come from shipping raw AI code unsupervised. We don't, and we support what we ship.
Will we own the code?
100%, from day one. We deliver to a repository you control — no proprietary platform, no lock-in.
How fast can we start?
Usually within days. A short scoping call defines the build, the timeline, and a fixed quote.
Can you work with our existing team?
Yes — we augment in-house teams, review their work, and set standards, or run the build end to end. We flex to how you work.

Let's build it — Miami.

Tell us what you're shipping. We'll give you a senior engineer's read, an honest timeline, a fixed quote, and tell you whether AI-native is the right fit for your build.