React & Next.js Engineering · San Francisco

React & Next.js Engineering
in San Francisco

Production frontends shipped on a flat price.

We ship production React and Next.js applications for founders in San Francisco. App Router, server components, type-safe APIs, real performance budgets. A senior engineer owns the frontend so you don't end up with a Storybook full of components and nothing live.

Get a React & Next.js Engineering quote San Francisco overview

Engagement shape

From

$6,000

Flat price, quoted after 30-min call

Timeline

2–4 weeks

First production deploy

Senior engineer, named

Day 1

Code in your GitHub

Retainer, equity, lock-in

How this works

One AI-native engineer.
The output of a team.

One senior engineer plus AI agents now ships react & next.js engineering that used to need a four-person team. Same code quality, half the cost, three-week timelines instead of three months. Built for pre-seed to Series A founders in San Francisco who need to ship before the next round closes.

The local read

Why react & next.js engineering is hard in San Francisco

SF founders compete with OpenAI, Anthropic, and every Series B sitting on $200M in dry powder. A senior engineer offer that actually wins here is $400K all-in, plus relocation, plus equity refreshers. At seed stage that's most of the round.

One named engineer with AI agents now does what a four-person team used to. Three-week timelines instead of three months. Flat-price quote in 24 hours after a discovery call. Pacific Time, overlap with your Sand Hill investors and your early customers in the same window. Code in your GitHub from commit one.

Hiring one senior engineer here is a ~$310K year-one outlay and a 60–90 day search. Our react & next.js engineering engagement starts at $6,000 with a first deploy in 2–4 weeks.

Did you know · San Francisco

Y Combinator has funded over 5,000 startups since 2005. Combined valuation is north of $600B.

Time zone

--:--:--

Pacific Time. You can DM us at 9am and get a response at 9:01am.

Sectors in San Francisco

AI and ML infrastructureDeveloper toolsConsumer appsClimate techFintech

Stack we use

ReactNext.js 16 (App Router)TypeScriptTailwindTanStack QueryVercel

What you actually get

Concrete deliverables.
Live in 2–4 weeks.

No discovery phase that bills for itself. No Figma-only delivery. Every item below is something you can open, click, and ship to a user.

Next.js App Router project with server components and streaming

Type-safe API layer (tRPC or typed REST) — no runtime shape surprises

Component system aligned with your brand (or shadcn/ui composition)

Real-world performance — Lighthouse 90+ on the routes that ship

Deployed on Vercel with preview URLs for every branch

Why us

Why founders in San Francisco pick us for this

Day-one React, day-one Next.js — we don't learn the framework on your project

Server components and partial prerendering used where they help, not as a cult

We know which patterns to avoid (Context-as-state, useEffect overuse, prop drilling)

Flat price covers QA on real devices, not just 'works on my Mac'

React & Next.js Engineering we've shipped

Founders we shipped react & next.js engineering with

Real founders, real product, real testimonials. The kind of react & next.js engineering work we'd do for you in San Francisco.

AI Tool · 2025

Irresistible Bot

The platform combines structured onboarding, intelligent prompts, and brand-specific logic to ensure every output is grounded in real context. The more details users provide, the better and more accurate the results become. This allows the AI to act as a true copy coach, not just a writing tool.

Visit the product

“I came to the team with a clear vision of what I wanted to build -- a coach bot that could truly reflect my voice, my methodology, and my years of experience in copywriting and coaching. Start Matter helped turn that vision into a real product, handling everything from the technical foundation to the branding elements like the logo and overall experience. What stood out most was how thoughtful and collaborative the process felt. The team asked the right questions, took the time to understand my brand, and helped structure the system in a way that makes the bot both powerful and easy for clients to use. It never felt generic -- it felt tailored to me and my audience. They also helped shape the onboarding and content flow, making sure the questions and prompts guide users to give meaningful input, so the results are genuinely useful and aligned with the message: "Let's Create Irresistible Copy Together." Start Matter didn't just build a tool -- they helped me bring my coaching approach into a scalable, digital format. I'm truly grateful for their care, clarity, and commitment, and I would absolutely recommend them to anyone building an AI-powered product rooted in real expertise.”

Vrinda Normand

CEO at Irresistible Online Marketing, Inc.

Deeper reads

Common questions about react & next.js engineering
in San Francisco

How fast can you start?

Most builds begin within seven days of the first call. We don't sell discovery — we go from problem statement to first deploy on the same day-one timeline.

Is the price really flat?

Yes. After a 30-minute call we send a single number and a scope you can accept or reject. No hourly billing, no change-order games. If we underestimate, we eat it.

Pages Router or App Router?

Default to App Router for new builds — server components, streaming, Cache Components, and the routing primitives are where Vercel and the framework are investing. We migrate Pages → App on request.

Can you work with our existing backend?

Yes — REST, GraphQL, gRPC, your homegrown JSON-RPC. We wrap it in a typed client and the frontend doesn't care about the protocol underneath.

Who owns the code?

You do, from commit one. The repository is created in your GitHub org. Infrastructure is provisioned in your cloud account. We don't host your stack on ours and we don't lock you in.

More questions → /faq/tech · /faq/process · /faq/timeline

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