Is the training Qualiopi certified?

Yes, Learni is a Qualiopi-certified training organization. This certification guarantees the quality of our courses and enables funding through OPCO and other mechanisms.

How can I fund my training?

Our courses are eligible for OPCO funding. Learni supports you through the funding process. A personalized quote is available upon request.

What are the prerequisites for this training?

The prerequisites for the Training Web3.js - Interacting with Ethereum Smart Contracts training are: Mastery of JavaScript ES6+, Solidity and Ethereum, experience in DApp development. A preliminary interview validates your eligibility.

Is the training available in person?

Yes, the Training Web3.js - Interacting with Ethereum Smart Contracts training is available in in-person. The format can be adapted to your needs (inter, intra, custom).

Training Web3.js - Interacting with Ethereum Sma... | Learni

The story of Learni

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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Methods, approaches, and teaching resources

The Training Web3.js - Interacting with Ethereum Smart Contracts 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.

Teaching resources provided

To ensure the quality of the Training Web3.js - Interacting with Ethereum Smart Contracts training, Learni provides the following teaching resources:

Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, video projector or interactive touchscreen (for remote sessions)
Training environments installed on workstations or accessible online
Course materials, practical exercises, and supplementary resources
Post-training access to materials and 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.

* contact us for remote feasibility** ratio varies depending on the training followed

Assessment methods

The assessment of skills acquired during the Training Web3.js - Interacting with Ethereum Smart Contracts training is carried out through:

During training: case studies, practical exercises, and professional scenarios
At the end of training: self-assessment questionnaire and skills evaluation by the trainer
After training: training completion certificate detailing acquired skills

Training accessibility

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.

Training objectives

Master Web3.js for professional blockchain interactions in enterprise settings

Develop secure connections with Ethereum nodes via Web3.js

Implement advanced smart contract calls and ABI management

Optimize event reading and transactions for certifying applications

Design scalable DApps with Web3.js and IPFS tools

Deploy Web3.js interfaces integrating multisig and wallets

Acquire certifying skills in decentralized development

Training program

Module 1Web3.js Fundamentals: Advanced Configuration and Ethereum Providers (Infura, Alchemy)

Expert installation and configuration of Web3.js in Node.js and browser environments, connection to providers like Infura or Alchemy to interact with the mainnet blockchain, practical exercises on creating Web3 instances, managing accounts and ETH balances, simulation of gas-optimized transactions on testnets, development of a blockchain monitoring script with detailed logs and advanced debugging for professional projects.

Module 2Web3.js and Smart Contracts: ABI Calls, Encoding, and Execution (Hardhat, Truffle)

In-depth exploration of ABIs to decode Solidity contracts, use of web3.eth.Contract for read/write calls, encoding complex parameters with web3.utils, deployment and upgrade of contracts via Web3.js scripts, real enterprise cases like an interactive ERC20 token, exercises on multisig interactions, production of reusable JS wrappers with unit tests for smooth production integration.

Module 3Web3.js Events: Subscriptions, Filters, and Log Parsing (The Graph, Moralis)

Setting up real-time subscriptions for smart contract events via Web3.js, creating past/future filters to index logs efficiently, advanced parsing of topics and data with web3.utils.hexToAscii, integration with indexers like The Graph for optimized queries, practical workshops on a simulated DEX with trading alerts, development of a reactive dashboard capturing volumes and prices, optimization for enterprise scalability with robust error handling.

Module 4Advanced Web3.js DApps: Wallets, IPFS, and Security (MetaMask, WalletConnect)

Integration of MetaMask and WalletConnect for user-friendly transaction signing, decentralized storage of metadata via IPFS and web3.storage, implementation of anti-reentrancy guards and flashloans, security audit of complete DApps with tools like Slither, red-thread project finalizing a functional NFT marketplace, deployment on Vercel with Etherscan monitoring, delivery of certifying source code and post-training optimization plan for professional use.