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 Web3.js expertise, 65% of pro dApps fail in production due to RPC bugs or gas overflows, costing 50k€+ in wasted gas fees and external audits.
Risk of wallet hacks via poorly coded signatures skyrockets to 80% of DeFi incidents (Chainalysis 2023), losses in millions like Ronin (625M$).
Lack of real-time subscriptions hampers UX, 40% user abandonment.
Training avoids 90% downtime, boosts project ROI x3 via proven expert optimizations.
Dive into expert Web3.js configuration, install hybrid providers, code resilient connections to Ethereum and L2, perform exercises on dynamic network switching, generate deliverables like a reusable provider manager, test live on Sepolia to validate immediate robustness and scalability.
Master custom ABI encoding/decoding, deploy contracts via Web3.js, simulate batch tx for gas savings, practice real DeFi cases with Uniswap V3, produce contract migration scripts, analyze tx logs in depth, leave with a production-ready interaction toolkit.
Set up websockets for live events, code custom filters on blocks/transactions, integrate with React for reactive dApps, exercise on NFT marketplace events, optimize polling vs subscriptions, create custom monitoring dashboards, take away ultra-high-performance functional prototypes.
Implement EIP-712 signatures, integrate secure MetaMask/WalletConnect, profile gas with hybrid ethers.js, debug via Truffle/Ganache, simulate reentrancy attacks, finalize complete DeFi dApp project, leave certified with pro portfolio and access to shared GitHub repo.
The Training Web3.js - Master Advanced Blockchain dApps 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 Web3.js - Master Advanced Blockchain dApps 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 Web3.js - Master Advanced Blockchain dApps 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.
Registration is possible up to 48 business hours before the start of training. All our programs are eligible for corporate training budgets and employer-funded plans.
« 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.
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
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Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
CryptographieIndustry-certified
CryptographieIndustry-certified
CryptographieIndustry-certified
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CryptographieIndustry-certified
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Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.