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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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Discover essential strategies, trends, and training programs for organizations to excel in data governance by March 2026. Stay compliant and leverage data effectively.
No-Code / Low-Code training in Leeds in November 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.
Don't let this gap widen
Without advanced Web3.js mastery, your DApps waste 40% more gas, losing 20-30% of your mainnet deployment budget.
Slow transactions cause 70% user drop-offs, signing bugs expose you to hacks (1.2B$ stolen on Ethereum in 2023).
Missed events block real-time analytics, competitors scale while you debug manually.
Lose 50% dev time, clients flee to fluid apps.
This training avoids these pitfalls: +300% profitability through gas savings, enhanced security, 2x faster deployment.
The Training Web3.js - Deploy High-Performance Ethereum DApps 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 Web3.js - Deploy High-Performance Ethereum DApps 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 Web3.js - Deploy High-Performance Ethereum DApps 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.
Configure Infura/Alchemy providers for robust connections, deploy Solidity smart contracts via Node.js scripts, interact with complex ABIs for batched reads/writes, implement WebSocket listeners for live events, optimize gas through dynamic estimations and multicall, secure EIP-712 signing with MetaMask, complete exercises on an NFT marketplace DApp, produce deliverable: connected wallet deploying a functional ERC-721.
Target audience
Blockchain developers, full-stack engineers, DApp architects seeking to advance their Web3.js skills.
Prerequisites
Mastery of JavaScript ES6+, experience with Solidity and Ethereum, basic Web3.js usage.
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