Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Learning objectives
- Master custom hooks and advanced useReducer
- Optimize performance with memoization and virtualization
- Implement expert state management via Redux Toolkit
- Develop SSR and SSG with Next.js 14
- Conduct advanced tests with Jest and React Testing Library
- Deploy scalable React apps on Vercel/Netlify
- Apply architectural patterns for micro-frontends
The Learni story
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Why this program matters
Without expert React mastery, your apps suffer 60% performance drops leading to 40% user drop-offs, costly production bugs (average 15k€/incident per Stack Overflow), doubled project delays from botched state management refactors, loss of competitiveness against Next.js competitors (ROI -25%).
Avoid turnover of frustrated junior devs, transform into scalable leads boosting revenue +35% via smooth apps and top SEO.
Program
Module 1Advanced Hooks: useReducer, Context and Patterns (React, exercises)
Dive into custom hooks by creating reusable solutions with useReducer for complex states, apply Context API to an authenticated dashboard, complete exercises on composition patterns like Compound Components, produce an optimized deliverable hook, test live for immediate and addictive mastery.
Module 2React Performance: Memo, Callbacks and Lists (React DevTools)
Optimize your apps by implementing useMemo and useCallback on real-world infinite lists, analyze re-renders with React DevTools Profiler, virtualize large datasets via react-window, measure 70% fluidity gains, generate a performant deliverable component, experience the thrill of ultra-responsive apps.
Module 3Expert State Management: Redux Toolkit and Zustand (RTK Query)
Master Redux Toolkit by refactoring a complex store with slices and RTK Query for API caching, compare to Zustand for simplicity, integrate logging middleware, develop a full-stack simulated CRUD, export production-ready source code, feel the power of infallible and scalable global states.
Module 4Advanced SSR and Next.js: App Router, Streaming (Next.js 14)
Build a complete SSR app with Next.js App Router, implement streaming and Suspense for lightning UX, manage i18n and dynamic SEO, optimize images via Next/Image, deploy a live prototype, obtain a deliverable e-commerce site, adopt techniques that boost your Google rankings tomorrow.
Module 5Testing, Deployment and Monitoring: Jest, CI/CD (Vercel)
Write end-to-end tests with MSW and Playwright, configure GitHub Actions pipelines for CI/CD, monitor with Sentry and React Profiler, deploy on Vercel with previews, review a collaborative final project, receive certification and source code, finish as an expert ready to scale any React app.
Evaluation method
- Daily interactive quizzes, paired final project, Qualiopi certification
Learning method
- 70% hands-on real-world cases, 30% applied theory, individual mentoring
Methods, materials and delivery
The Training React Expert - Optimize Performance and Advanced SSR program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
Equipment required
For the smooth delivery of the Training React Expert - Optimize Performance and Advanced SSR program, the following equipment is required:
- Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
- Training environments installed on workstations or accessible online
- Course materials, hands-on exercises and complementary resources
- Post-training access to materials and educational resources
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
* contact us for remote delivery feasibility** ratio varies depending on the program
Skills assessment methods
Assessment of skills acquired during the Training React Expert - Optimize Performance and Advanced SSR program is performed through:
- During training: case studies, hands-on labs and professional scenarios
- End of training: self-assessment questionnaire and skills evaluation by the trainer
- After training: completion certificate detailing acquired skills
Program accessibility
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Enrollment terms and lead times
Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.
Verified reviews
What our learners
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
Our method
Training quality, guaranteed at every step
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
You meet the trainer beforehand
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
- Live briefing on goals and team context.
- Veto right — we swap the trainer for free if needed.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
- Hands-on cases drawn from your stack and projects.
- Program co-written then validated by your team.
Continuous quality follow-up
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
- NPS, knowledge quizzes and skills self-assessment.
- Satisfaction guarantee: fully satisfied or free rework.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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