Course: «Solidity Programming Language — Level Pro»

1990.00

2490.00

Special attention is given to security, gas optimization, complex real-world project cases, and preparation for 2025 job interviews. This course completes the Solidity learning series and provides a full skill set for building any projects in the Ethereum ecosystem.

What You Will Learn
The architecture of Zero Knowledge Rollups and Optimistic Rollups.
New features of Ethers.js v6.
SOLID design principles and custom data types in Solidity.
Low-level deployment to the same address (Tornado Cash example).
Development and deployment on ZKSync.
Modern ERC standards (2612, 4626, 4907, 6551, 1167, 3156, 404).
NFT techniques: rental, lazy minting, marketplace.
Automation with OpenZeppelin Defender.
Fuzzy testing and secure randomness generation via VRF and oracles.
Gas optimization patterns with Yul.
Solving “Stack too deep” errors and extension patterns.
Preparation for advanced interviews in 2025.

Course Program
1. Zero Knowledge Rollups and Layer 2 — zkRollup, Optimistic Rollup, architecture, and use cases.

2. Ethers.js v6 — updates, BigInt, function overloading, imports.

3. SOLID Principles — designing maintainable and scalable code.

4. Custom Data Types — new Solidity features and language updates.

5. Tornado Cash Hack — deploying new code to the same address.

6. ZKSync — deploying smart contracts and using ZKSync Hardhat plugins.

7. ERC2612 and EIP712 — gasless approvals, off-chain signatures, ERC20 integration.

8. ERC4626 — tokenized vaults.

9. ERC4907 — NFT rentals with fixed terms.

10. NFT Lazy Minting — just-in-time token minting.

11. OpenZeppelin Defender — automating smart contract tasks.

12. Fuzzy Testing — fuzzing with Foundry.

13. VRF and Oracles — secure randomness, Chainlink VRF, oracles in practice.

14. ERC6551 — token-bound accounts with ETH balances for NFTs.

15. ERC1167 — minimal proxies, opcodes, and low-level details.

16. Transparent Upgradeable Proxy & ERC1967 — upgradeable contracts.

17. Documentation and NatSpec — Foundry, mdBook, documenting contracts.

18. Gas Optimization — Yul tricks and techniques.

19. ERC3156 — flash loans without intermediaries.

20. Practice — Foundry, Anvil, ERC20 deployment, testing, marketplace.

21. Stack Too Deep Error — causes and solutions.

22. NFT and ERC721 — building a marketplace with Foundry and OZ v5.

23. NFT and ERC1155 — multi-token marketplace with Foundry and OZ v5.

24. OpenZeppelin Defender v2 — updated version overview.

25. AccessManaged — access control via a custom contract.

26. Front-End — integration with Next.js and TypeScript.

27. ERC404 — hybrid ERC20/ERC721 token design.

28. Extension Pattern — bypassing contract size limits.

29. EIP2929 and EIP2930 — cold/hot access, AccessList, gas optimization.

30–32. Interviews 2025 — medium, advanced, and expert-level questions.

30. Crypto Career — finding jobs, avoiding scams and fraud.

Who This Course Is For
Experienced Solidity developers.
Web3 engineers working on complex dApps and protocols.
Security auditors and researchers.
CTOs and blockchain project team leads.

What You Need to Start
Deep Solidity knowledge (Basic and Advanced levels completed).
Experience with Hardhat, Foundry, and testing.
Understanding of dApp architecture and security patterns.

Learning Outcomes
By the end of this course, you will:
Master Layer 2 and zk-technologies.
Implement advanced ERC and EIP standards.
Optimize contracts and reduce gas costs.
Work confidently with Foundry and OpenZeppelin Defender.
Be fully prepared for interviews at top Web3 companies.