DEV.co
Jacksonville, FL · Custom Software + AI

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

We pair senior engineers with an AI-accelerated delivery model to design, build, and ship custom software far faster than a traditional shop — without the fragile, unreviewed code 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.

Jacksonville anchors the largest city in Florida by area — home to a deep financial-services and fintech market (anchored by Fidelity National, Black Knight, and the broader Riverside-to-Southside corridor), the Mayport Naval Station, JAXPORT, and a growing healthcare and B2B SaaS scene. Senior hires are six figures, months out, and picked over by Fortune-500 employers, defense contractors, and the venture-backed challengers around them. AI changes the math, but only when senior people own the parts AI gets wrong.

AI is genuinely good at the repetitive 70% of software work: scaffolding, boilerplate, CRUD, first-draft UI, test stubs, glue code. It is dangerously unreliable at the other 30%: architecture, security, edge cases, and knowing when its own output is wrong. Teams that ship raw AI code learn this in production.

We build for Jacksonville operators — fintech and payments platforms scaling toward compliance, port-logistics and freight tools, defense and naval software shipping into program milestones, provider-side healthcare tools, B2B SaaS shipping into mid-market buyers, and modernization of decades-old enterprise stacks. Our model: AI handles scaffolding and the repetitive 70%; a senior engineer owns architecture, security review, 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: PAN logged in plaintext on an error path → tokenized + scrubbed + log-content test// ✓ merged: audit-logged authentication event with correlation id, idempotency key on payment webhook
Every change
AI velocity + human judgment
tests + security review built in
you own 100% of the result

On a Jacksonville fintech, defense, or logistics build, the failure modes are cardholder data in logs, logging gaps against control catalogs, and non-idempotent payment webhooks. Senior review catches them before a QSA, 3PAO, or month-end run does.

What we build for Jacksonville companies.

Fintech

Fintech & payments platforms

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

Logistics

Supply-chain & ops platforms

Routing, dispatch, inventory, and visibility tools that replace clipboards and spreadsheets.

Defense

Defense & national-security software

Mission tools and analytics built for the security, classification, and integration standards your contracts require.

Healthcare

Healthcare & HIPAA-ready apps

Patient-facing portals, clinician tools, and care-coordination platforms built to HIPAA from day one.

Product

SaaS platforms

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

AI

AI applications

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

Senior, on-shore, AI-accelerated

A senior team that moves at AI speed.

You work with senior engineers who own architecture and quality — not a junior pool with raw AI output bolted on. We communicate in Eastern Time and integrate with your tools and cadence.

Jacksonville's senior engineering pool is concentrated around financial-services employers, naval and defense contractors, healthcare networks, and a growing venture-backed bench — three-to-six months to hire and quietly poached by Atlanta and remote coastal roles. An AI-native team gets you shipping this week, flexes monthly, and doesn't need a downtown office.

Talk to an engineer

Traditional Jacksonville 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 Jacksonville teams.

Do you work with Jacksonville companies?
Yes — we serve Jacksonville, Orlando, Tampa, and Atlanta 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 PCI-scoped fintech, FedRAMP, or DoD environments?
Yes. We architect with PCI scope and the relevant DoD control catalogs in mind from day one and structure the unclassified portion of work for clean handoff to cleared teams. We don't certify your stack or deliver an ATO; we deliver code your auditors can review.
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 — Jacksonville.

Tell us what you're trying to ship. We'll give you an honest recommendation, a timeline, and a fixed quote — and tell you if AI-native is the right fit or not.