// US-based Full-Stack developers
Free project plan & cost estimate in 48 hours.
Senior Full-Stack developers, based in the US, working your hours
Front-end, back-end, database, and deployment handled by one senior US engineer who owns features end to end and joins your standups.
- Interview engineers before you pay anything
- 100% U.S.-based, working your hours
- No brief or spec needed to get started
First 5 Dev Hours Free
Project plan. Roadmap. Cost & ROI estimation.
Real engineers. Real conversations.
Talk to an engineer. Not a salesperson.
Free · No commitment · Project-focused call
Most teams interview matched engineers within a week
Not the right fit? We bring in a replacement
Get your free project plan
Three quick steps. No brief needed.
Free · No commitment · Reply within one business day
// teams we've worked with
“NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag.”
Sound familiar?
- Hiring a senior Full-Stack developer full-time is taking months.
- Your Full-Stack codebase has grown messy and every change breaks something else.
- Offshore hand-offs and time-zone gaps turn one-day fixes into week-long threads.
- You need someone senior enough to make decisions, not just close tickets.
What our Full-Stack engineers build
End-to-end features
UI, API, database, and deploy shipped by one engineer instead of three hand-offs.
APIs & back-ends
Node.js, Python, Java, or .NET services with tests, logging, and clean CI/CD.
Rescue & modernization
Messy full-stack codebases stabilized and modernized without stopping feature work.
How it works
- 01
Pick a time
Book a 30-minute project call directly in our calendar.
- 02
Talk through the problem
Tell us what needs building, what's stuck and what success looks like. No spec needed.
- 03
Your plan in 48 hours
Get your project plan, roadmap, cost and ROI estimates. The plan is yours to keep.
- 04
First 5 dev hours free
Agree the scope with our team. Decide whether to continue before any paid work begins.
Common questions
Will this turn into a sales pitch?
No. The call is about your project: what needs building, what's stuck, and whether we have the right engineers. If we're not a fit, we'll say so.
What do I get for free?
A project plan, roadmap, cost estimate and ROI estimate within 48 hours of your project call. Your first 5 development hours are free, too. We agree the scope and any paid work with you before proceeding.
Do I need a spec or brief?
No. Tell us the problem in plain words and we'll help shape the scope with you.
Are the engineers really in the U.S.?
Yes. Every engineer lives and works in the United States. No offshore hand-offs, and that's in the contract.
What our clients say
"NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag."
"Their R&D tax credit workflow platform paid for itself in the first filing season."
"AI-native from day one. Our IRS transcript pipeline runs 24/7 without a human in the loop."
"Property tax appeals used to take weeks. Their comp analysis tooling turned it into hours."
"The AI intake agent handles our tier-1 patient calls with a hand-off cleaner than our old call center."
"POS, inventory, ordering — all unified. We finally have one source of truth across every location."
"The procurement platform paid for itself in the first quarter of use."
"They shipped our matching engine in 6 weeks. Our old team would've taken 6 months."
"Enterprise-grade delivery without the enterprise-agency price tag."
"Their team plugged into our sprint on day one. Zero ramp time."
"NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag."
"Their R&D tax credit workflow platform paid for itself in the first filing season."
"AI-native from day one. Our IRS transcript pipeline runs 24/7 without a human in the loop."
"Property tax appeals used to take weeks. Their comp analysis tooling turned it into hours."
"The AI intake agent handles our tier-1 patient calls with a hand-off cleaner than our old call center."
"POS, inventory, ordering — all unified. We finally have one source of truth across every location."
"The procurement platform paid for itself in the first quarter of use."
"They shipped our matching engine in 6 weeks. Our old team would've taken 6 months."
"Enterprise-grade delivery without the enterprise-agency price tag."
"Their team plugged into our sprint on day one. Zero ramp time."
Hire US-based full stack developers through NextGen Coding Company for projects spanning browser interfaces, backend services, and databases. A React 19 and Next.js 15 application needs careful boundaries between Server Components, client state, and API access. Define the role around your actual architecture: TypeScript, Node.js, PostgreSQL, authentication, deployment pipelines, and the features that need attention first.
Every engineer lives and works in the US, works your hours, and joins your standups; there is no offshore subcontracting. For a full stack role, interviews should test how a candidate traces problems from a slow page through API calls to database queries. We sign an NDA and full IP assignment before touching code. Book a 15-minute call to discuss your application.
Frequently asked questions
- What skills should I look for in a full stack developer?
- Look for depth across your actual request path, not a long list of frameworks. For a Next.js application, ask about React rendering, TypeScript boundaries, Node.js APIs, and PostgreSQL indexes. A senior candidate should explain authentication, error handling, testing, and how frontend decisions affect backend load and deployment behavior.
- Can a full stack developer migrate our React app to Next.js?
- A migration should start with routing, rendering requirements, and existing API contracts. Moving a React single-page application to Next.js 15 may introduce Server Components, server rendering, and different caching behavior. Ask candidates how they would migrate incrementally, preserve authenticated flows, and verify behavior with Playwright rather than rewrite everything at once.
- How do we evaluate a full stack developer in an interview?
- Use a small feature that crosses layers, such as a searchable account list with permission checks. Have the candidate discuss a React interface, an API contract, a PostgreSQL query, and failure states. Follow with questions about Vitest, Playwright, schema migrations, and diagnosing a slow endpoint in production.
- Should we hire one full stack developer or separate frontend and backend developers?
- One full stack developer can suit a product where features regularly cross UI, API, and database boundaries. Separate roles may make more sense when interface accessibility or backend throughput requires sustained specialization. Base the decision on your backlog, architecture, and review capacity, rather than assuming one person should own every technical discipline.
- How quickly can we interview a US-based full stack developer?
- Most teams interview matched engineers within a week of the first call. Bring your frontend framework, backend runtime, database, and immediate backlog so the conversation targets the right experience. For example, distinguish Next.js App Router work from a React SPA with Express. Start by booking a 15-minute call.
- Are your developers really based in the US?
- Yes. Every engineer lives and works in the United States. No offshore subcontracting and no hand-offs to another team. That's written into the contract.
- How fast can someone start?
- Most teams interview matched engineers within a week of the first call. Start dates depend on your interview process.
Related reading
- How to hire a software developer
What to check before you sign.
- Hiring test for senior engineers
How to vet senior talent fast.
- Senior engineer salary guide 2026
What the market pays.
- Onshore vs offshore vs nearshore
The honest tradeoffs.
- Forward deployed engineers
Need an owner, not just capacity?
- Resource library
Every guide and benchmark we publish.
Start your project request
Tell us what you're building — engineering capacity, AI, QA, cloud, or a fixed-scope software engagement. Our NYC team responds within one business day.
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