Trusted by clients across the DACH region
Scaled React setups in SaaS, insurance, media & events
Free React website audit (lite)
We review three key pages of your website and deliver a multi-page PDF with quick wins across performance, SEO & rendering – plus a 30-min review call.
Value: €1,200 — currently free via the form.
Benefits:
- Report within 2 business days incl. prioritization by impact/effort
- Current state, risks, actions per page
- Low risk, no sales pressure
Note: The free audit is available via form only (not included with direct booking).
Terms: B2B in DACH, 1× per company, analysis of public pages only.
What you gain with us
Services for your React success
We modernize codebases without big-bang rewrites: Blueprint → Hardening → Feature delivery. Focused on architecture, performance & DX.
What clients say — real impact in the team
You recognize a good React agency by steadier releases and a calmer roadmap. Clients report clear decisions, less firefighting and more deliverable features.
The project was delivered on time with a strong focus on accessibility and WCAG compliance. Clear communication, smooth collaboration, and deep technical expertise ensured a high-quality result from start to finish.
Stine Bækos - Bertelsmann Gruppe
Product Owner
How we work — no big bang, clear outcomes
- 1
Discovery & codebase scan
Profiling, bundle/render costs, state map, DX bottlenecks; 5 quick wins for the next 2–4 weeks.
- 2
Blueprint
Component boundaries, state strategy, data layer, testing plan; 30/60/90-day roadmap incl. effort & DoD.
- 3
Hardening sprint
Core refactoring, performance levers (INP/LCP), test harness, CI; visible metric improvements.
- 4
Enablement & delivery
Pairing, runbooks, Storybook care; features with lower risk and consistent speed.
Who’s behind the work
Christian Salat
Founder of prokodo
I’m Christian, founder of prokodo. For 15 years I’ve helped teams build scalable React apps — with a focus on architecture, performance and developer experience.
Frequently asked questions to a React agency
Answers on architecture, state strategies, performance, SEO and team enablement. Project specifics are best discussed in a 30-minute tech check — incl. first recommendations.
How much does a React project cost?
Depends on starting point and goals. Common entry: code/performance audit (fixed price), then two-week sprints or retainer. Ballparks (non-binding): Audit €1.2–3.5k, refactoring sprint €8–15k, MVP 6–10 weeks. We plan with a 30/60/90-day roadmap, clear DoD and measurable KPIs (e.g., INP/LCP targets, defect rate, lead time).
What does the process look like — from kick-off to go-live?
- Discovery & codebase scan (profiling, bundle/render costs, DX bottlenecks)
- Blueprint (component boundaries, state strategy, data layer, test plan)
- Hardening sprint (top levers: INP/LCP, architecture fixes, CI)
- Feature delivery (canary rollouts, observability, A/B tests)
First improvements typically go live in 2–4 weeks; an MVP in 6–10 weeks.
Is upgrading to React 19 worth it?
Often yes. React 19 brings Actions, useActionState, useOptimistic, the use API (suspends during render), new form APIs in react-dom (useFormStatus), ref as a prop, <Context> as provider, improved hydration error diffs and stable RSC. Approach: check compatibility, enable Transitions/Actions step-by-step, guard with INP/LCP watchers, rollout via feature flags
SSR/SSG or is CSR enough?
We decide per page type/flow:
- CSR for internal/app-only UIs (no SEO need, heavy interaction)
- SSR/streaming for SEO-relevant, personalized or frequently updated content
- SSG/ISR for landing/docs/category with controlled freshness
We build a rendering matrix (SEO, freshness, personalization, cost) and set cache/revalidation rules.
What’s the right state management (React Query, RTK, Zustand …)?
Server state ≠ client state.
- Server state: React Query (cache, revalidate, mutations)
- Client state: Zustand/RTK depending on complexity; forms separate (controller/schema)
Guardrails: minimal re-renders, selector-based access, decoupled side-effects, clear cross-cutting concerns (auth/feature flags/tracking).
How do you improve INP/LCP in practice?
- LCP: correct sizes for hero image, AVIF/WebP, single priority, preconnect/preload, critical CSS
- INP: event decoupling (transitions), selective/lazy hydration, virtualization, debounce/throttle, split heavy listeners
- JS budget: code-splitting, no heavy UI libs above the fold, strict third-party budget
Measurement: profiling + RUM (targets: INP P75 < 200 ms, LCP < 2.5 s).
Does SEO work with React?
Yes — with the right rendering strategy. Essentials: meaningful routes, meta/schema server-side or pre-rendered, internal linking, i18n/hreflang, fast CWV. For content teams we integrate headless CMS (previews, roles/permissions) and clean content modeling.
You can find more technical details in our React consulting solution.
How do you measure success — beyond CWV?
A KPI set per goal:
- Productivity/DX: lead time, deployment frequency, change failure rate
- Quality: defect rate, e2e pass rate, error budget
- Business: conversion/CTR, time-to-publish, SEO visibility
We report monthly, prioritize by impact/effort, and tie tasks to metric goals (e.g., INP −30 %, lead time −20 %).