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.
1 seat held for the next session
Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.

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.
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
Without ERC-4337 mastery, your Ethereum smart wallets expose users to critical Account Abstraction vulnerabilities, multiplying exploit risks.
An implementation error costs blockchain projects an average of 1.8 million dollars, according to Chainalysis reports on DeFi hacks in 2023.
70% of advanced wallet incidents stem from poor ERC-4337 protocol management, resulting in fund losses and extended service outages.
Every quarter without expertise, your company loses 25% market share to agile competitors, directly threatening your career and project viability.
Overview of the evolution of wallets on Ethereum, limitations of Externally Owned Accounts, Account Abstraction concept, motivation and architecture of the ERC-4337 standard. Presentation of the main actors (EntryPoint, UserOperation, Bundler, Paymaster) and initial possible use cases.
Analysis of EntryPoint operations, development of a smart wallet supporting ERC-4337, transaction execution and validation, customizable signatures and logic, multi-signature management and security, deployment flow creation and testing on testnets, use of open-source libraries (e.g., eth-infinitism).
Advanced paymaster implementation to subsidize or condition transactions, innovative gas fee management, interaction with Bundlers, UserOperation customization, audits, protection against common attacks, user experience enhancements (social recovery, 2FA, biometrics), deployment on live environments, and future perspectives of Account Abstraction.
The Training: Mastering ERC-4337: Protocols and Smart Wallet Development on Ethereum 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.
For the smooth delivery of the Training: Mastering ERC-4337: Protocols and Smart Wallet Development on Ethereum 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: Mastering ERC-4337: Protocols and Smart Wallet Development on Ethereum 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.
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.
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.
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Blockchain & Web3Industry-certified
Storage & backupIndustry-certified
Storage & backupIndustry-certified
Storage & backupIndustry-certified
Storage & backupIndustry-certified
Storage & backupIndustry-certified
Storage & backupIndustry-certified
Cryptography & PKIIndustry-certified
Cryptography & PKIIndustry-certified
Cryptography & PKIIndustry-certified
Cryptography & PKIIndustry-certified
Cryptography & PKIIndustry-certified
Cryptography & PKIIndustry-certifiedAvailable on-site and remotely. Pick your city to see the local training center.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.