Training Web3.js - Master Ethereum Interactions in 2 Days

$2,310

  • 2 days
  • Onsite
  • 10 people max.
Ref: UFW768
10 people max.
$2,310
In-company rate: from $4,190 for the whole team
On-site and certification exam on quote
2 days
Onsite

Don't let this gap widen

Why this program matters

  • Without Web3.js, 65% of JavaScript devs waste 20h+ on faulty configs and miss 80% of blockchain jobs (market +250% in 2024).

  • Risk costly hacks: 2,5Md€ lost in exploits 2023.

  • Deploy slow DApps and miss DeFi/NFT opportunities (10k€/average project).

  • Trained competitors integrate Ethereum in days while you stagnate.

  • Avoid project delays, gas errors (x10 costs), and Web3 exclusion.

  • Train now: immediate profitability and 5x ROI in 6 months.

Célian Lebacle, Learni trainer · Web & mobile expert
Célian Lebacle

Learni trainer · Web & mobile expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

40,830 programs · 25 countries

  • Aptar
  • ArcelorMittal
  • Equans
  • EDF
  • Ubisoft
  • Microsoft

Every program built with a dedicated engineer

  • OpenAI
  • Anthropic
  • Mistral AI
  • NVIDIA
  • Google
  • Amazon Web Services
  • Microsoft Dynamics 365
  • Salesforce
  • ServiceNow
  • SAP
  • Oracle
  • Cisco
  • Fortinet
  • Palo Alto Networks
  • Aruba
  • VMware
  • Red Hat
  • Databricks
  • Snowflake
  • OVHcloud
  • Notion
  • AMD
  • Apple

Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Web3.js training objectives

  • Install and configure Web3.js with providers
  • Read on-chain data via simple calls
  • Interact with smart contracts using ABI
  • Manage blockchain transactions and events
  • Develop a basic connected DApp
  • Debug common Web3.js errors

Web3.js curriculum: 2 modules over 2 days

Module 1 : Introduction to Web3.js: Installation and First Calls (Node.js, MetaMask, ABI)

Dive into Web3.js by installing via npm on Node.js, configure Infura or Alchemy providers for Sepolia testnet, perform ETH balance and block readings via live console, explore ABIs of open-source contracts, complete practical exercises on MetaMask wallets, produce on-chain consultation scripts, alternating demos, hands-on coding, and Q&A for immediate mastery.

Module 2 : Advanced Web3.js Interactions: Transactions, Events, and DApp (signing, events)

Move to action with sending signed transactions, listening to smart contract events, integrate Web3.js into a basic React app, simulate ERC-20 transfers on testnet, analyze gas fees and common errors, build a complete decentralized voting DApp, test live with debugger, deliver a functional project ready to deploy, inspired by real Ethereum cases.

How Web3.js skills are assessed

  • Interactive quizzes at the end of each day
  • Final graded DApp project
  • Peer coding feedback

How the Web3.js course is taught

  • Theory 30% / Practice 70%
  • Hands-on live exercises
  • Real Ethereum use cases

Web3.js training: access and practical arrangements

The Training Web3.js - Master Ethereum Interactions in 2 Days 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 - Master Ethereum Interactions in 2 Days 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 Web3.js - Master Ethereum Interactions in 2 Days 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.

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.

Our method

How Learni guarantees the quality of your Web3.js training

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.

Step 1

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.
Step 2

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.
Step 3

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.
Step 4

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.

A child walking to school with a backpack
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
Enroll and offer a kit
FAQ

Web3.js: frequently asked questions

Which tools are used in Web3.js training?+
Hands-on work runs on node.js, metaMask, ABI, signing and events. Those tools come from the Web3.js program itself, delivered on site over 2 days, so participants practise on the stack they will use at work.
What can participants do after Web3.js training?+
They can install and configure Web3.js with providers, read on-chain data via simple calls and interact with smart contracts using ABI. Those are the stated objectives of the Web3.js program at Beginner level, checked by the end-of-session assessment.
What does the Web3.js program cover, day by day?+
Day 1: Introduction to Web3.js: Installation and First Calls (Node.js, MetaMask, ABI). Day 2: Advanced Web3.js Interactions: Transactions, Events, and DApp (signing, events). The Web3.js program runs over 2 days, delivered on site.
How is Web3.js training assessed?+
Assessment relies on interactive quizzes at the end of each day, final graded DApp project and peer coding feedback. Learni issues a completion certificate together with the individual assessment report at the end of the Web3.js program, which an L&D team can file as evidence.
How much does Web3.js training cost per participant?+
Web3.js training costs $2,310 per participant. For an in-company team, the flat rate starts at $4,190 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does Web3.js training take?+
2 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 Web3.js 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 Web3.js training?+
Mastery of JavaScript ES6+, Ethereum blockchain basics, Node.js environment.
Is a certificate issued after Web3.js 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 Web3.js 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.
Your professional training, anywhere

Let's build your Web3.js learning path.

30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.

Reply within 24h · Vetted experts · USD invoicing · W-9 available
On-site & remote

Web3.js training in your city

Available on-site and remotely. Pick your city to see the local training center.

Share in 2 clicks