Most React development services stop at tutorial-shaped basics — a demo that works until real traffic hits it. Ours don't. Eleven years of shipping production React means we've already made the boring calls on component architecture, server rendering, edge runtimes, and state management that decide whether your app can still ship features in year three.
Why Entalogics for React
Most teams hire React developers and end up with React-shaped problems instead. Real React development services fix the boring decisions before they become expensive ones.
A sub-1s LCP isn't a target we chase after the fact — it's the only path we build. Streaming, route-level code splitting, and font/image discipline get decided in the architecture, so the team physically can't ship a slow path even by accident.
Component soup happens when five engineers each build their own version of the same button. A real design system — tokens, variants, accessibility, built on Radix or shadcn primitives — means five engineers ship one coherent product instead of five stapled-together ones.
Most state bugs come from state living in the wrong place. Shareable state goes in the URL. Server state lives in the cache. Client state only shows up where it's actually earned a reason to exist — less Redux, fewer bugs, pages that load faster because they're not dragging around state that doesn't belong to them.
Strict TypeScript runs unbroken from the database schema through the API contract to the component prop. When that chain is intact, a refactor that would take weeks of manual checking takes hours, because the compiler catches the boring half of code review before a human has to.
When React, when not
An honest decision matrix, not a pitch for React development services you don't actually need. We'll tell you on the first call whether this stack is right for your problem, or whether your budget is better spent elsewhere.
PICK REACT WHEN
CONSIDER OTHERS WHEN
WE SAY NO WHEN
What we build with React
The shapes of React application development we ship most — single-page apps, dashboards, and everything in between, each slotting cleanly into a stack you already have.
Landing pages, docs, and blog content built to take real traffic — CMS-driven, rendered at the edge, with instrumentation wired in from the first deploy, not bolted on after launch.
Multi-tenant interfaces where navigation changes by role, tables carry the real workload, and updates show up live — offline-capable as a PWA when the workflow genuinely needs it.
Chat interfaces that stream, tool-call inspectors that show what the agent actually did, eval dashboards, and UIs built for tasks that keep running after the request ends.
A fully headless product page, listing page, cart, and checkout on Hydrogen or Next.js — built to hit sub-second LCP on mobile, not just desktop.
One spreadsheet becomes five. Five become an unmaintainable Notion doc holding it all together. We replace all of it with something built to be internal tooling, not a workaround.
A component library your team actually owns — tokens, primitives, MDX-documented, versioned, and demoed in Storybook, not scattered across five different Figma files.
The playbook
The architectural patterns that show up on almost every React engagement. Not invention — convention, applied carefully.
P01
RSC is the default, and client components are the exception — added only where interactivity actually earns its cost. Smaller bundles, faster pages, a mental model that doesn't need a flowchart to explain.
P02
The boundary between frontend and backend gets checked by the compiler, not discovered in production. tRPC, Zod, or generated GraphQL types turn a broken contract into a build failure, not a runtime surprise.
P03
Client-side data lives in TanStack Query. Server-side data lives in the RSC cache with revalidation. Neither approach tolerates request waterfalls or a UI that quietly shows stale data.
P04
Color, spacing, and typography live in code, not in a screenshot someone eyeballed. Light mode, dark mode, density, and brand variants all fall out of that decision for free instead of costing a redesign.
P05
A handful of well-chosen Playwright and snapshot tests catch the regressions a human reviewer misses on the fifth PR of the day — and the whole suite runs in CI in under five minutes, not overnight.
P06
React gets introduced one route at a time inside an app that already exists — never a flag-day cutover. The current product keeps shipping features the entire time we're migrating it.
Signature case
A B2B platform on a legacy SPA — 4.8s LCP, two-second route transitions, bundle creeping past 1.2 MB. We migrated to a typed Next.js App Router setup in 10 weeks. Without a feature freeze.
Before
p75 LCP 4.8s · bundle 1.2 MB · client state in 11 stores
After
p75 LCP 0.84s · bundle 280 kB gz · server-cache + URL state
Engagement shape
A typical React development engagement, start to finish. Migration happens route by route, never in one flag-day cutover — the current app keeps shipping the whole time.
Two senior engineers spend week one inside your actual codebase — a bundle analysis, a render-blocking inventory, a state-management audit. You come out of it with an RFC ranked by impact and priced in dollars, not a vague roadmap slide.
Design tokens get set up, the type-safety baseline gets established, and one real production route migrates start to finish. The metrics that show up are in your actual dashboards, not a staged demo built to look good.
Every remaining route migrates one at a time behind a feature flag, old and new versions running side by side. Every cutover ships with a kill-switch. Your product roadmap doesn't pause for any of it.
The old code gets deleted, not left as dead weight. Component library docs get written, Storybook gets set up, visual and integration tests get built in. The runbook goes to your team directly, or we stay on retainer if that's the better fit.
Stack
Picked by problem, not by resume. Happy to slot into your stack — but green-field, this is the default.
Engagement
No hourly retainer billing for "thinking time." Pick the lane that matches your stage — every path is fixed-quote or transparently rated.
One product, scoped up front, priced once, built entirely by senior engineers — no junior rotation. RFC to launch inside 8 to 14 weeks.
$15k–$30k
FIXED SCOPE
A pod of senior React engineers embedded directly in your Slack, your Linear, your standups — sized to what your team actually needs, resized or paused with 30 days' notice, no long lock-in.
$5k / eng / mo
PER ENGINEER
For product orgs that need more than a delivery team — a long-term React consulting partner who also brings judgement: design system ownership, an ongoing performance program, help hiring your own team when the time comes.
custom
PROCUREMENT-FRIENDLY
Founder-direct
Thirty minutes with the founder. We'll bring a senior React lead, the relevant playbook, and a candid read on whether your problem is one we should take.
