React Consulting Germany
Senior React Engineering, Architecture Audits & High-Performance Frontend Systems for Companies Across Germany
React is the frontend foundation for thousands of modern digital products — but without the right architecture, performance strategy and state management approach, products become slow, brittle and difficult to scale. H-Studio is a Berlin-based engineering team specialising in React 19, Next.js 15, TypeScript, and scalable frontend architectures for startups, SMEs and enterprise clients across Germany. We help teams modernise codebases, improve performance, accelerate delivery and build stable, long-term frontend systems that support real product growth.
Why React Consulting Matters for Growing Teams
Most teams don't struggle because of React itself — they struggle because of architecture decisions made early, lack of structure, unclear ownership or scaling problems. Our React consulting helps companies solve exactly these problems:
1. Architecture clarity & long-term scalability
We review and redesign architectures to ensure:
- •predictable state management (Redux Toolkit, Zustand, React Query)
- •separation of concerns and maintainable component structures
- •clean domain logic and reusable UI patterns
- •SSR/ISR/RSC alignment for performance and SEO
- •stable API contracts and error handling
- •minimal re-renders and stable hydration
Your frontend becomes easier to extend, debug and scale — even with multiple teams.
2. Performance optimisation
Slow React apps impact conversions, user satisfaction and SEO. We deliver measurable improvements in Core Web Vitals:
- •component profiling & render optimisation
- •bundling reduction and lazy loading
- •image strategy, memoisation and suspense boundaries
- •removing blocking scripts
- •server-side rendering improvements (Next.js)
Typical results: 30–70% faster load times, lower INP, reduced CLS, higher Lighthouse scores.
3. Modernisation & migration
We help teams migrate to:
- •React 19
- •Server Components
- •New Next.js app router
- •TypeScript-first architecture
4. Component systems & design libraries
We build scalable UI systems:
- •reusable design systems
- •shared UI component libraries
- •accessibility-first interactions
- •SSR-compatible UI patterns
- •performance-safe animations (Framer Motion, GSAP)
Your platform gains consistency and faster development cycles.
5. Team enablement & technical leadership
We work directly with product, design and engineering teams to:
- •introduce best practices
- •build code review processes
- •define architectural guidelines
- •speed up onboarding and team scaling
- •support CTOs and founders with technical decision-making
We become a technical partner, not just an external implementer.
React Consulting Services in Germany
React Architecture Audit
A full technical review of your existing frontend:
- •file structure & domain boundaries
- •render cycles & performance hotspots
- •state management patterns
- •data-fetching strategy
- •SSR/RSC opportunities
- •error boundaries and caching logic
- •maintainability & extensibility
Performance & Core Web Vitals Consulting
We diagnose and fix real bottlenecks that slow down user experience and SEO visibility. Includes Lighthouse, WebPageTest, bundle analysis and real-user performance monitoring.
React Refactoring & Codebase Modernisation
We refactor and upgrade old React applications to modern standards:
- •TypeScript migration
- •hooks-based refactor
- •replacing anti-patterns
- •simplifying component structures
- •preparing the system for Next.js migration
React + Next.js Integration
Many companies combine React with Next.js for SEO, performance and edge delivery. We help teams implement:
- •server components
- •app router migration
- •enhanced API routes
- •caching layers and revalidation
- •analytics integration
- •image optimisation
State Management Consulting
We design predictable, scalable state strategies that prevent technical debt:
- •Redux Toolkit
- •Zustand
- •React Query / TanStack Query
- •Event-driven state
- •Hybrid approaches for complex domains
React for SaaS, Dashboards & Enterprise Tools
We build and advise on:
- •admin panels
- •analytics dashboards
- •onboarding & funnel logic
- •multi-role systems
- •real-time interactions
- •component-heavy interfaces
React Consulting for Startups, SMEs and Enterprises in Germany
Startups
Need speed, reliability and scalable patterns from the start.
SMEs
Often need performance, redesign, or architecture restructuring.
Enterprises
Require strict reliability, documentation, governance and GDPR compliance.
We adapt our consulting to your product, team and technical environment.
What You Can Expect From Working With Us
Senior-level React expertise
We do not outsource. Our engineers have 7–15 years of experience building large, complex React and Next.js systems.
Clear, actionable improvements
No abstract recommendations. You receive a practical, step-by-step roadmap.
Hands-on implementation
We don't just "consult". If needed, we jump in and implement improvements directly.
Stable engineering workflows
CI/CD, testing, code review rules, architectural guidelines — everything required for predictable delivery.
Examples of React-based platforms we've built
Our React expertise spans web, SaaS, commerce, analytics, AI products, real estate and digital experiences.
React Consulting in Germany — Start Today
If your team needs architectural clarity, performance improvements, migration support or hands-on engineering expertise, we can help.
FAQ
Do you work with React 19?
Yes — we specialize in React 19, Server Components, Next.js 15, TypeScript and modern React patterns including hooks, context, and state management best practices.
Can you help migrate from older React versions?
Yes — we help teams migrate from class components, older React versions, and legacy codebases to modern React 19 with hooks, TypeScript, and improved architecture.
Do you provide hands-on implementation?
Yes — we don't just consult. We can directly implement improvements, refactor code, set up architecture, and work alongside your team.
What about performance optimization?
Performance is a core focus. We optimize Core Web Vitals, reduce bundle sizes, improve render cycles, implement lazy loading, and achieve 30–70% faster load times.
Can you help with state management?
Yes — we design and implement state management strategies using Redux Toolkit, Zustand, React Query, or hybrid approaches depending on your needs.
Related Services
We provide React consulting services for startups, SMEs and enterprises across Germany. Our Berlin-based team specializes in React architecture audits, performance optimisation, React 19 migration, state management consulting, Next.js integration and scalable frontend engineering for companies of all sizes.