Domain
Blockchain & Web3
Skill Profile
This skill defines expectations across roles and levels.
Roles
2
where this skill appears
Levels
5
structured growth path
Mandatory requirements
0
the other 10 optional
Blockchain & Web3
Web3 Development
2/22/2026
Choose your current level and compare expectations. The items below show what to cover to advance to the next level.
The table shows how skill depth grows from Junior to Principal. Click a row to see details.
| Role | Required | Description |
|---|---|---|
| Blockchain Developer | Understands main token standards: ERC-20, ERC-721, ERC-1155, ERC-4626. Knows differences and use cases for each standard. Sets up infrastructure for supporting various token types. | |
| Smart Contract Developer | Implements core token standards: ERC-20, ERC-721, ERC-1155, ERC-4626. Understands interface requirements and extension points of each standard. Tests compliance via reference tests. |
| Role | Required | Description |
|---|---|---|
| Blockchain Developer | Implements infrastructure support for extended token standards: ERC-4626 vault tracking, ERC-2981 royalties, wrapped tokens. Configures monitoring and alerting for token operations. | |
| Smart Contract Developer | Implements extended token mechanics: fee-on-transfer, rebasing tokens, permit (EIP-2612). Understands edge cases: zero-amount transfers, self-transfers, approval race conditions. |
| Role | Required | Description |
|---|---|---|
| Blockchain Developer | Designs infrastructure for multi-standard token platform: unified API, cross-chain token bridging, compliance monitoring. Analyzes new standards (ERC-7496, ERC-7512) for adoption. | |
| Smart Contract Developer | Designs custom token systems: multi-token vaults, wrapped token bridges, synthetic assets. Analyzes composability risks with DeFi protocols and ensures standards compliance. |
| Role | Required | Description |
|---|---|---|
| Blockchain Developer | Defines token standards strategy for the organization. Establishes guidelines for standard selection across various use cases. Coordinates adoption of new standards and token migrations. | |
| Smart Contract Developer | Defines token standard strategy for the organization. Establishes guidelines for standard selection per use case. Coordinates adoption of new standards and token migration processes. |
| Role | Required | Description |
|---|---|---|
| Blockchain Developer | Defines enterprise token infrastructure strategy. Participates in new EIP standard development and shapes industry best practices for token implementation and lifecycle management. | |
| Smart Contract Developer | Defines enterprise token standard strategy. Participates in developing new EIP token standards. Shapes best practices for token implementation, security, and lifecycle management. |