🐞 Debug & Troubleshooting (Web3 / DeFi)
🧪 Frontend Debug
- •Browser DevTools (Elements, Network, Performance)
- •Debug state inconsistency & re-render issues
- •Memory leak detection
- •Responsive & cross-browser debugging
- •Mobile Safari / Chrome mobile debugging
🔗 Transaction Debug
- •
Full transaction lifecycle:
- •
sign → submit → pending → confirm → fail
- •
- •
Handle stuck, dropped, replaced transactions
- •
Decode revert reasons & custom errors
- •
Gas estimation & gas-related failures
- •
Debug approval vs execution issues
🌐 RPC & Network Issues
- •RPC timeout & fallback handling
- •Chain mismatch & network switching errors
- •Provider instability & rate limiting
- •Multi-RPC awareness
- •Debug inconsistent on-chain reads
🧩 DeFi UX Debug
- •Wrong balances & stale UI state
- •Sync UI state with on-chain state
- •Slippage & price mismatch debugging
- •Race conditions between UI & blockchain
- •Edge cases: paused contracts, empty pools, low liquidity
🧱 Backend & Smart Contract Debug
🔌 Backend / API Debug
- •Debug REST / GraphQL APIs
- •Frontend ↔ backend data mismatch analysis
- •Signature-based authentication debugging
- •Cache & eventual consistency issues
- •Correlate logs between frontend, backend & tx hash
📦 Indexer & Data Layer
- •
Understanding of:
- •The Graph / Subgraphs
- •Custom indexers (RPC → DB)
- •
Debug missing or delayed events
- •
Handle reorgs & inconsistent indexing
- •
Fallback UX for indexer lag
📜 Smart Contract Debug (Frontend Perspective)
- •Read & understand ABI and interfaces
- •Interpret revert reasons & custom errors
- •Debug permission, role & pause logic
- •Validate contract state via block explorers
- •Distinguish frontend vs backend vs contract bugs
⛽ Gas & Execution Debug
- •Gas estimation failures
- •Out-of-gas & underpriced transactions
- •Simulation success but execution failure
- •Nonce, replacement & cancel transaction handling
🔍 Cross-Layer Debug Workflow
- •
Trace issues across:
- •UI → API → RPC → Smart Contract → Events → Indexer → UI
- •
Compare expected vs on-chain state
- •
Use transaction traces & event logs
- •
Write clear bug reports for backend / contract teams
🔧 Tooling & Workflow
- •Git / GitHub
- •Vite / Webpack
- •ESLint / Prettier
- •PNPM / Yarn
- •Figma (developer handoff & inspection)
🤝 Collaboration
- •Work closely with smart contract engineers
- •Collaborate with backend & protocol teams
- •Understand DeFi business logic
- •Agile / sprint-based development
🌱 Nice to Have
- •Framer Motion / GSAP
- •Storybook
- •Accessibility audits
- •Multi-chain UX awareness (EVM / Solana / Cosmos)
🎯 Engineering Focus
- •UX safety for financial actions
- •Prevent user fund loss through better UI
- •Clear state over assumptions
- •Defensive coding for unreliable RPCs
- •Clean, maintainable, performance-aware code