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Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.
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30 free minutes with a training advisor — no commitment.
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Artificial Intelligence training in Raleigh in June 2026 with Learni. Certified, expert trainers, eligible for employer funding. Free quote.
Professional Training training in Memphis in October 2026 with Learni. Certified, expert trainers, eligible for employer funding. Free quote.
Cybersecurity training in Sheffield in November 2026 with Learni. Certified, expert trainers, eligible for employer funding. Free quote.
Discover essential strategies, trends, and training programs for organizations to excel in data governance by March 2026. Stay compliant and leverage data effectively.
Don't let this gap widen
Without advanced JavaScript expertise, your code leaks 40% memory in production, causing crashes on 25% of mobiles and 15% conversion losses.
Loading time +3s without Workers hampers SEO, with a 35% abandonment rate.
ES2023 competitors capture 20% more market share.
Untested async bugs cost 8k€ per incident on average.
Stay stuck with legacy frameworks, miss Node.js scalability, and risk obsolescence in 12 months against Big Tech.
The Training JavaScript Expert - Optimize Performance and Scalability training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.
The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.
To ensure the quality of the Training JavaScript Expert - Optimize Performance and Scalability training, Learni provides the following teaching resources:
For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.
The assessment of skills acquired during the Training JavaScript Expert - Optimize Performance and Scalability training is carried out through:
Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.
Learni training programs are available for inter-company and intra-company settings, both in-person and remote. Registration is possible up to 48 business hours before the start of training. Our programs are eligible for OPCO, Pôle emploi, and FNE-Formation funding. Contact us to discuss your training project and funding possibilities.
Discover a comprehensive, practical Node.js backend training guide tailored for March 2026. Master scalable APIs, security, deployment, and more with hands-on projects for real-world success.
Software Development training in Louisville in January 2025 with Learni. Certified, expert trainers, eligible for employer funding. Free quote.
Dive into ES2023 through practical exercises on Temporal and Records, optimize code with Web Workers on real-world resource-intensive mobile app cases, build a micro-frontends architecture with Module Federation and Webpack, test via Jest on critical scenarios, deploy a scalable Node.js prototype with clusters, leave with ready deliverables: optimized templates and deployable Git repo.
Target audience
Fullstack JavaScript developers, web architects, technical leads seeking to upskill.
Prerequisites
Mastery of ES6+, 5 years of front/back-end development experience, promises/async-await, prototypes/closures.
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