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.
Very demanding course · Expertise required
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Every program built with a dedicated engineer
Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft, Microsoft and Atos.
Program
Dive into the new features of Web3.js 2026 with connections to Ethereum nodes via Infura and Alchemy, configuration of multi-chain providers for Layer 2 such as Optimism and Arbitrum, development of smart contract interactions via ABI and batched asynchronous calls for high performance, secure management of MetaMask and WalletConnect wallets with EIP-712 signatures, practical exercises on a real DeFi DApp project including real-time events via WebSocket subscriptions, optimization of gas fees and unit tests with Hardhat, production of a complete deliverable: a functional DApp deployed and documented for professional portfolio.
The Training Web3.js 2026 - Developing Advanced Ethereum DApps program is delivered onsite or remote (blended-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 Web3.js 2026 - Developing Advanced Ethereum 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.
Skills assessment methods
Assessment of skills acquired during the Training Web3.js 2026 - Developing Advanced Ethereum DApps program is performed through:
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
Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.
The Learni story
Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.
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.
Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
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.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
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.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

A school kit donated to a child for every training booked
To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Cryptography & PKIIndustry-certified
Cryptography & PKIIndustry-certified
Cryptography & PKIIndustry-certified
Storage & backupIndustry-certified
Storage & backupIndustry-certified
Storage & backupIndustry-certified
Social mediaIndustry-certified
Social mediaIndustry-certified
Social mediaIndustry-certifiedAvailable on-site and remotely. Pick your city to see the local training center.
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