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 this upskilling, your team accumulates a technological gap that translates directly into productivity loss.
Organizations that don't train their talents on key topics see their competitiveness drop.
Every quarter without training is a gap widening with competitors who invest.
The cost of inaction quickly exceeds that of well-targeted training.
Discover quick installation of Web3.js 2026 via npm, configure providers like MetaMask and Infura to connect web apps to Ethereum mainnet or testnets, perform first blockchain calls to read block height and ETH balance, practice guided exercises in Node.js console with immediate verification, produce a deliverable basic connected script validating beginner skills in professional training.
Dive into Ethereum account management via Web3.js 2026, sign transactions with private keys or MetaMask, send ETH on Sepolia testnets, explore gas estimation and optimized fees, perform practical peer-to-peer transfer exercises with live feedback, integrate console debugging for common errors, generate a deliverable console app managing 5 secure transactions to strengthen enterprise blockchain skills.
Learn to load contract ABIs via Web3.js 2026, call read/write functions on deployed Remix contracts, pass encoded parameters for reading balances or minting ERC20 tokens, test on local Ganache forks, implement real DeFi cases like swap simulations, correct revert errors with traces, produce a deliverable JS dashboard querying 3 live contracts to validate professional Web3 upskilling.
Master event subscriptions via Web3.js 2026 on Infura WebSockets, filter ERC20 Transfer or Approval logs, integrate React frontend listeners for live blockchain updates, manage polling fallbacks for robustness, practice exercises on a dApp notifying incoming transactions, optimize with ABI event decoding, create a deliverable real-time interface tracking wallet activity to certify interactive enterprise skills.
Build a complete Web3.js 2026 dApp connected to MetaMask, integrate a mock DeFi lending protocol, deploy Vite frontend on Vercel with IPFS-pinned backend, test end-to-end on mainnet fork, conduct pair-programming code review for security best practices, finalize portfolio project with certificate, consolidate certified skills for a professional blockchain career.
The Training Web3.js 2026 - Interacting with Ethereum and Smart Contracts 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 2026 - Interacting with Ethereum and Smart Contracts 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 2026 - Interacting with Ethereum and Smart Contracts 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.
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
Développement BlockchainIndustry-certified
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.