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.
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Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.
Training: Master Ethers.js: Develop High-Performance Web3 Applications
Trusted by — schools, companies and industrial groups
Every program built with a dedicated engineer
Learning objectives
- Understand the structure and uses of the Ethers.js library
- Manipulate wallets, addresses, and transactions on Ethereum with Ethers.js
- Read and interact with smart contracts
- Create web interfaces that connect to the Ethereum blockchain
- Manage security, errors, and transaction optimization
- Deploy and test Web3 applications using Ethers.js
Our social commitment
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.
- Backpack, notebooks and essential supplies
- Distributed through our partner charities
- Included, at no extra cost to you
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.
Don't let this gap widen
Why this program matters
Without mastery of Ethers.js, your Ethereum dApps multiply gas-guzzling transactions and critical failures.
A team loses on average 40% of its monthly gas budget – that is 5 000 € for an average project – due to missing optimizations.
70% of DeFi hacks (more than 3 billion $ in 2023) stem from mismanaged blockchain interaction errors, threatening your company's survival and your career as a developer.
Every month without solid skills widens the gap with Web3 leaders.
Program
Module 1Introduction to Ethereum & Getting Started with Ethers.js
Overview of the Ethereum blockchain and Web3 ecosystem. Presentation of Ethers.js and setup of the development environment (Node.js, NPM, Metamask). Initialization of TypeScript or JavaScript projects. Discovery of the main Ethers.js modules. Manipulation of Provider and Signer objects. First readings of blocks, states, and Ethereum accounts.
Module 2Wallets, Transactions, and Interaction with Smart Contracts
Creation and management of wallets (key generation, seed phrase recovery, backup). Transaction construction, ETH emission, balance monitoring and confirmations. In-depth on Provider (RPC, testnet, mainnet). Discovery and interaction with ERC-20 and ERC-721 contracts. Use of ABI, sending data, event management. Best practices for front-end integration.
Module 3Security, Optimization, and Deployment of Web3 Applications with Ethers.js
Security management: key protection, input validation, mitigation of common attacks. Unit tests and integration with Hardhat/Truffle. Best error and log management strategies. Optimization of RPC calls and gas fees. Deployment of dApp integrating Ethers.js on a React or Vue front-end. Integration with Metamask and WalletConnect. End-to-end case study: development of a Web3 dashboard and evaluation quiz.
Evaluation method
- Practical work on wallet manipulation, transaction sending, and contract reading
- Development of a mini-dApp at the end of the training
- Quiz to validate knowledge acquisition
Learning method
- Interactive courses and technical demonstrations
- Applied exercises for each module
- Practical case on Ethers.js integration project
- Detailed materials and source codes on GitHub
Methods, materials and delivery
The Training: Master Ethers.js: Develop High-Performance Web3 Applications 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: Master Ethers.js: Develop High-Performance Web3 Applications program, the following equipment is required:
- Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
- Training environments installed on workstations or accessible online
- Course materials, hands-on exercises and complementary resources
- Post-training access to materials and educational resources
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.
* contact us for remote delivery feasibility** ratio varies depending on the program
Skills assessment methods
Assessment of skills acquired during the Training: Master Ethers.js: Develop High-Performance Web3 Applications program is performed through:
- During training: case studies, hands-on labs and professional scenarios
- End of training: self-assessment questionnaire and skills evaluation by the trainer
- After training: completion certificate detailing acquired skills
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.
Our method
Training quality, guaranteed at every step
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.
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.
- Live briefing on goals and team context.
- Veto right — we swap the trainer for free if needed.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
- Hands-on cases drawn from your stack and projects.
- Program co-written then validated by your team.
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.
- NPS, knowledge quizzes and skills self-assessment.
- Satisfaction guarantee: fully satisfied or free rework.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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FAQ
Frequently asked questions
What can participants do after Training: Master Ethers.js: Develop High-Performance Web3 Applications training?+
They can understand the structure and uses of the Ethers.js library, manipulate wallets, addresses, and transactions on Ethereum with Ethers.js and read and interact with smart contracts. Those are the stated objectives of the Training: Master Ethers.js: Develop High-Performance Web3 Applications program at Intermediate level, checked by the end-of-session assessment.
What does the Training: Master Ethers.js: Develop High-Performance Web3 Applications program cover, day by day?+
Day 1: Introduction to Ethereum & Getting Started with Ethers.js. Day 2: Wallets, Transactions, and Interaction with Smart Contracts. Day 3: Security, Optimization, and Deployment of Web3 Applications with Ethers.js. The Training: Master Ethers.js: Develop High-Performance Web3 Applications program runs over 3 days, delivered on site.
How is Training: Master Ethers.js: Develop High-Performance Web3 Applications training assessed?+
Assessment relies on practical work on wallet manipulation, transaction sending, and contract reading, development of a mini-dApp at the end of the training and quiz to validate knowledge acquisition. Learni issues a completion certificate together with the individual assessment report at the end of the Training: Master Ethers.js: Develop High-Performance Web3 Applications program, which an L&D team can file as evidence.
How much does Training: Master Ethers.js: Develop High-Performance Web3 Applications training cost per participant?+
$3,465 (USD) per participant. A detailed quote is sent within one business day, and team pricing applies from the second participant.
How long does Training: Master Ethers.js: Develop High-Performance Web3 Applications training take?+
3 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Training: Master Ethers.js: Develop High-Performance Web3 Applications training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Training: Master Ethers.js: Develop High-Performance Web3 Applications training?+
Mastery of JavaScript and basic knowledge of blockchain/Ethereum.
Is a certificate issued after Training: Master Ethers.js: Develop High-Performance Web3 Applications training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for Training: Master Ethers.js: Develop High-Performance Web3 Applications training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
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