Roles · Smart Contract Developer · Junior
3 core skills, 72 in total. Expectations per skill, and what changes at the next level.
This page lists what a Junior } is expected to know and do, skill by skill. Core skills are the ones a manager and peers assess in a review cycle; the rest count only in self-assessment. Main areas: Blockchain & Web3.
Grouped by area. The label on the right is the expected depth: Awareness, Working, Advanced or Expert.
Understands core consensus algorithms: PoW, PoS, BFT. Knows how finality affects contract security and when a transaction can be considered confirmed for business logic.
Understands DeFi primitives: constant product AMM (x*y=k), lending/borrowing mechanics, staking. Reads and analyzes Uniswap V2/V3 and Aave code. Interacts via contract calls.
Writes unit tests using Hardhat or Foundry. Tests deploy, mint, transfer, and revert cases. Uses fixtures for repeatable tests and achieves 75%+ coverage on new contracts.
Not assessed by the team, but part of the self-assessment and the development plan.
72 skills get a higher expectation or become core when moving from Junior to Mid-level. The biggest jumps first.
} in the open competency matrix: 72 skills across 5 levels. The matrix is free for individuals and stays free.