Skill Profile

Web3 Frontend: ethers.js, wagmi

Web3 frontend: ethers.js, viem, wagmi, contract interaction, events

Blockchain & Web3 Web3 Development

Roles

where this skill appears

Levels

structured growth path

Mandatory requirements

the other 4 optional

Blockchain & Web3

Web3 Development

3/17/2026

Choose your current level and compare expectations. The items below show what to cover to advance to the next level.

What is Expected at Each Level

The table shows how skill depth grows from Junior to Principal. Click a row to see details.

Role	Required	Description
Blockchain Developer		Understands Web3 frontend basics: connecting to Ethereum via ethers.js, reading contract state, and displaying on-chain data. Builds simple dApp UIs with React and wagmi hooks. Follows established patterns for wallet connection and transaction submission.
Smart Contract Developer		Understands Web3 frontend fundamentals: using ethers.js and wagmi for contract interaction, event listening, and transaction status tracking. Implements basic UI components for token balances, allowances, and contract reads. Tests interactions on testnets.

Role	Required	Description
Blockchain Developer		Independently develops with Web3 Frontend in Hardhat/Foundry. Conducts basic audits. Optimizes gas.
Smart Contract Developer		Independently develops with Web3 Frontend in Hardhat/Foundry/OpenZeppelin. Conducts basic audits. Optimizes gas.

Role	Required	Description
Blockchain Developer	Required	Designs scalable Web3 frontend architectures with optimistic updates, multicall batching, and real-time event subscriptions via WebSockets. Implements complex DeFi interfaces: swap routers, liquidity dashboards, and portfolio trackers. Optimizes RPC usage with caching and request deduplication. Mentors team on Web3 frontend patterns.
Smart Contract Developer	Required	Designs advanced Web3 frontend systems: custom hooks for complex contract interactions, subgraph-powered data layers, and gasless transaction UX with relayers. Implements real-time price feeds, DEX aggregation interfaces, and multi-chain switching. Mentors developers on efficient RPC management and Web3 state synchronization.

Role	Required	Description
Blockchain Developer	Required	Defines Web3 frontend architecture standards and development workflows for blockchain products. Establishes patterns for RPC provider management, contract ABI versioning, and cross-chain UI consistency. Conducts code reviews focused on Web3 UX quality and security.
Smart Contract Developer	Required	Defines Web3 frontend standards for smart contract platform teams. Establishes testing strategies for contract interaction layers, ABI type-safety practices with TypeChain, and monitoring for failed transactions. Coordinates frontend-contract integration patterns across teams.

Role	Required	Description
Blockchain Developer	Required	Defines organizational Web3 frontend strategy across products and ecosystems. Designs universal dApp frameworks with chain abstraction, embedded wallet support, and progressive decentralization. Drives adoption of account abstraction UX and contributes to Web3 frontend tooling ecosystem.
Smart Contract Developer	Required	Defines enterprise Web3 frontend vision spanning DeFi, NFT marketplaces, and DAO governance dashboards. Designs reusable Web3 component libraries with chain-agnostic contract interaction patterns. Establishes organizational standards for Web3 accessibility, performance, and progressive enhancement across all dApp products.

Junior 2 requirements

Blockchain Developer

Understands Web3 frontend basics: connecting to Ethereum via ethers.js, reading contract state, and displaying on-chain data. Builds simple dApp UIs with React and wagmi hooks. Follows established patterns for wallet connection and transaction submission.
Smart Contract Developer

Understands Web3 frontend fundamentals: using ethers.js and wagmi for contract interaction, event listening, and transaction status tracking. Implements basic UI components for token balances, allowances, and contract reads. Tests interactions on testnets.

Middle 2 requirements

Blockchain Developer

Independently develops with Web3 Frontend in Hardhat/Foundry. Conducts basic audits. Optimizes gas.
Smart Contract Developer

Independently develops with Web3 Frontend in Hardhat/Foundry/OpenZeppelin. Conducts basic audits. Optimizes gas.

Senior 2 requirements

Blockchain Developer
Required

Designs scalable Web3 frontend architectures with optimistic updates, multicall batching, and real-time event subscriptions via WebSockets. Implements complex DeFi interfaces: swap routers, liquidity dashboards, and portfolio trackers. Optimizes RPC usage with caching and request deduplication. Mentors team on Web3 frontend patterns.
Smart Contract Developer
Required

Designs advanced Web3 frontend systems: custom hooks for complex contract interactions, subgraph-powered data layers, and gasless transaction UX with relayers. Implements real-time price feeds, DEX aggregation interfaces, and multi-chain switching. Mentors developers on efficient RPC management and Web3 state synchronization.

Lead / Staff 2 requirements

Blockchain Developer
Required

Defines Web3 frontend architecture standards and development workflows for blockchain products. Establishes patterns for RPC provider management, contract ABI versioning, and cross-chain UI consistency. Conducts code reviews focused on Web3 UX quality and security.
Smart Contract Developer
Required

Defines Web3 frontend standards for smart contract platform teams. Establishes testing strategies for contract interaction layers, ABI type-safety practices with TypeChain, and monitoring for failed transactions. Coordinates frontend-contract integration patterns across teams.

Principal 2 requirements

Blockchain Developer
Required

Defines organizational Web3 frontend strategy across products and ecosystems. Designs universal dApp frameworks with chain abstraction, embedded wallet support, and progressive decentralization. Drives adoption of account abstraction UX and contributes to Web3 frontend tooling ecosystem.
Smart Contract Developer
Required

Defines enterprise Web3 frontend vision spanning DeFi, NFT marketplaces, and DAO governance dashboards. Designs reusable Web3 component libraries with chain-agnostic contract interaction patterns. Establishes organizational standards for Web3 accessibility, performance, and progressive enhancement across all dApp products.

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