Senior React developers, based in the US, working your hours
Product UIs, dashboards, and design systems in React, built by engineers who care about performance and code your team can maintain.
- Every engineer lives and works in the US
- Works your hours, joins your standups
- NDA and full IP assignment from day one
Book your call: tell us what you need
"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."
Sound familiar?
- Hiring a senior React developer full-time is taking months.
- Your React 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 React engineers build
Product front-ends
React apps with typed state, solid testing, and components your designers recognize.
Performance fixes
Slow renders, bloated bundles, and janky pages found, measured, and fixed.
Design systems
Shared component libraries that keep every screen consistent.
How it works
- 01
15-minute call
Tell us what you need built or fixed and where it's stuck.
- 02
Matched profiles
You meet US-based engineers with directly relevant work behind them.
- 03
You interview
Run your own technical interview. You only move forward with people you pick.
- 04
They start shipping
Onboarded into your repo, tools, and review process, with a weekly written update.
Hire US-based React developers from NextGen Coding Company to build and maintain React 19 interfaces, Next.js applications, and TypeScript component libraries. Common projects include replacing legacy class components, tightening API types, and fixing slow dashboards with expensive renders. The right scope distinguishes browser interaction problems from server-rendering, data-fetching, and bundling issues rather than treating every performance complaint as a reason to rewrite.
Your React engineer lives and works in the US, follows your working hours, and takes part in your standups. Our engineers are senior; many bring more than a decade of experience. An NDA and full IP assignment are signed before code access. Book a 15-minute call with your React version, routing setup, and component backlog to discuss where an additional engineer would fit.
Frequently asked questions
- Should I hire a React developer or a Next.js developer?
- Hire for the architecture you actually run. A Vite-based React application needs strong browser-side skills, routing knowledge, and API integration experience. A Next.js App Router project also requires understanding Server Components, caching, and server-client boundaries. If your application uses both patterns, ask candidates to explain where code executes and how data reaches an interactive component.
- What should a React 19 upgrade include?
- Start with compatibility checks for your framework, component library, testing tools, and TypeScript definitions. Review the React 19 upgrade guidance for removed APIs and behavior changes, then test forms, refs, and error handling. Keep dependency updates reviewable, and avoid bundling an unrelated state-management rewrite into the upgrade unless a genuine compatibility issue requires it.
- How can a React developer improve a slow dashboard?
- Profile the problem with React DevTools and browser performance tools before adding memoization. Large tables may need virtualization; repeated requests may need better query coordination with TanStack Query. Also inspect oversized bundles, expensive chart updates, and state placed too high in the tree. Measure the affected interaction again after each targeted change.
- What testing and accessibility skills should a React developer have?
- Look for React Testing Library experience focused on user-visible behavior, plus Playwright for critical browser flows. Accessibility work should include semantic HTML, keyboard navigation, focus management, and meaningful form errors. Automated checks such as axe can find some issues, but dialogs, menus, and complex widgets still need manual keyboard and assistive-technology review.
- What happens if the React developer is not the right fit?
- If the fit isn't right, we bring in a replacement with a proper hand-over. For a React project, useful hand-over material includes component conventions, routing decisions, test commands, and unfinished pull requests. Discuss whether the mismatch concerns TypeScript depth, Next.js architecture, or day-to-day collaboration so the replacement addresses the actual gap.
- 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.
- Response within 1 business day
- 30-minute discovery conversation
- Recommended engagement model & pricing
- NYC-focused — in-person available
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