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.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
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
Without expert React mastery, your apps suffer unnecessary re-renders wasting 40% CPU, leading to 30% user drop-off according to Google Analytics.
Develop without SSR?
Lose 70% organic SEO traffic.
Failing tests?
x3 production costs with critical bugs impacting 25% e-commerce revenue.
Non-scalable architectures lead to costly refactoring (avg.
15k€/project).
80% tech companies report React slowness as a growth barrier (State of JS 2023).
Miss this training, and competitors will overtake you on performance and ROI.
Create reusable custom hooks to manage complex APIs, analyze superfluous re-renders with React DevTools on a real e-commerce dashboard, apply React.memo, useMemo, and useCallback to boost performance by 60%, complete collaborative practical exercises, produce an optimized component deliverable by end of day, while mastering expert pitfalls for fluid apps.
Configure Context API and Redux Toolkit for scalable state in a multi-user app, implement SSR with Next.js for explosive SEO and load times under 2s, develop advanced integration tests with Jest and React Testing Library on critical cases, deploy to production on Vercel with CI/CD, complete a concrete capstone project, obtain ready-to-integrate deliverables, and gain expertise to scale your React projects.
The Training React Expert - Optimize Performance and Advanced State 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.
For the smooth delivery of the Training React Expert - Optimize Performance and Advanced State program, the following equipment is required:
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.
Assessment of skills acquired during the Training React Expert - Optimize Performance and Advanced State program is performed through:
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.
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.
« 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 »
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.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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Développement WebIndustry-certified
Développement WebIndustry-certified
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Frameworks & BibliothèquesIndustry-certified
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Frameworks & BibliothèquesIndustry-certified
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Cartographie & SIGIndustry-certified30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.