Core & Application Dev

Full-Stack Web3 Engineer

Builds end-to-end decentralized applications, connecting backend indexers, smart contracts, and frontend interfaces.

Level: SeniorMode: High-code#Fullstack#Solidity#React#Node.js

Next action

Build your Web3 proof-of-work. Start contributing and prepare for interviews based on real scenarios.

Role Guide Progress

Lane Type

Core & Application Dev

Seniority Level

Senior

Execution Mode

High-code

1. Role Overview

Handles the entire technology stack of a Web3 application, from writing smart contracts and setting up backend indexers to building frontend dApp interfaces.

2. Daily Work

What you will actually do most weeks

Developing and deploying smart contracts using Solidity and Foundry

Building custom indexers (The Graph / Subsquid) or backend APIs (Node.js)

Building frontend interfaces with React/Next.js and Viem/Wagmi

Ensuring security and seamless integration across all stack layers

Expected Outputs & Deliverables

Fully functional end-to-end dApps

Custom indexing subgraphs and backend services

Clean, tested monorepo codebases

3. Skills & Tools

Must-Have Skills

Mastery of Solidity, TypeScript, React, and Node.js

Understanding of database management, API design, and RPC communication

End-to-end system architecture design

Ecosystem Tools

SolidityNext.js / Node.jsThe GraphFoundryGit & Docker

4. Proof-of-Work & Prep

Actionable Proof-of-Work

Full-stack dApp repositories on GitHub with live deployments

Self-Study Prep

Build complete mini-protocols combining smart contracts, indexers, and frontends

5. Apply & Interview

Application Strategy

Submit a full-stack dApp project link demonstrating competence in all layers

Interview Prompts

"How do you architect data synchronization between smart contract event logs and a frontend dashboard?"

6. Guide Roadmap

Step 1

Frontend & Backend Basics

Master web dev foundations.

Step 2

Smart Contract Integration

Learn Solidity and EVM interaction.

Step 3

Indexing & Architecture

Master The Graph and backend services.

Step 4

Fullstack Engineer Hiring

Apply to high-growth Web3 startups.