All Roadmaps

Blockchain Developer

Go from zero to a professional blockchain engineer — smart contracts, DeFi protocols, NFTs, layer-2 scaling, and Web3 security.

Blockchain Fundamentals
Internal

Understand the distributed ledger, consensus mechanisms, and cryptographic primitives that underpin all blockchain networks.

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Cryptography Basics

Hash functions, public-key cryptography, digital signatures, Merkle trees.

Consensus Mechanisms

PoW vs PoS, slashing conditions, finality, BFT variants.

Bitcoin vs Ethereum

UTXO vs account model, scripting vs Turing-complete VM, use-case differences.

Solidity & Smart Contracts
Internal

Write, test, and deploy Ethereum smart contracts with Solidity — the primary language of EVM-compatible chains.

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Solidity Syntax & Types

Variables, functions, modifiers, events, inheritance, interfaces, libraries.

Open
OpenZeppelin Contracts

ERC-20, ERC-721, ERC-1155, Ownable, AccessControl, ReentrancyGuard, SafeMath.

Open
Gas Optimisation

Struct packing, calldata vs memory, storage slots, custom errors, unchecked blocks.

Optional Upgradeable Contracts

Proxy patterns: Transparent Proxy, UUPS, Diamond (EIP-2535). Storage slot collisions.

Development Environment

Master the tooling ecosystem for Ethereum smart contract development.

Hardhat

Local Ethereum network, contract compilation, deployment scripts, built-in testing with Chai.

Open
Foundry

Rust-based toolkit. Forge (testing), Cast (transactions), Anvil (local node). Fuzz testing built-in.

Open
Remix IDE

Browser-based IDE for quick prototyping, debugging, and learning. Good for beginners.

Open
Web3 Frontend Integration

Connect your dApps to wallets, read blockchain state, and send transactions from the browser.

ethers.js / viem

Connect to Ethereum nodes, read contract data, send transactions, parse events, sign messages.

Open
Wagmi & RainbowKit

React hooks for Ethereum. Wallet connection, contract reads/writes, account management.

Open
IPFS & Arweave

Decentralised storage for NFT metadata and files. Pinning with Pinata/NFT.Storage.

DeFi Protocols
Internal

Understand how the major DeFi primitives work — AMMs, lending markets, stablecoins, and yield strategies.

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AMMs & Liquidity

Uniswap v2/v3, Curve — bonding curves, liquidity provision, impermanent loss, fee tiers.

Lending & Borrowing

Aave, Compound — health factor, liquidation, interest rate models, flash loans.

Optional Flash Loans

Borrow and repay in one transaction. Arbitrage use cases, DeFi exploits, Aave flash loan API.

NFTs & Token Standards

Implement and deploy ERC-20, ERC-721, and ERC-1155 tokens. Build NFT projects from mint to marketplace.

ERC-20 (Fungible Tokens)

Standard token: approve, transferFrom, allowance. SafeERC20 wrapper, fee-on-transfer gotchas.

ERC-721 (NFTs)

Unique tokens, tokenURI, metadata standard (JSON schema), on-chain vs off-chain metadata.

ERC-1155 (Multi-Token)

Batch transfers, semi-fungible tokens. Ideal for gaming items and edition NFTs.

Smart Contract Security
Internal

Smart contract bugs can lose millions in minutes. Audit your code and understand the most common attack vectors.

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Common Vulnerabilities

Reentrancy, access control, oracle manipulation, front-running, integer overflow.

Open
Security Tooling

Slither, Mythril, Echidna (fuzzing), Foundry invariant tests, Certora Prover.

Optional Audit Preparation

Write NatSpec comments, test coverage > 95%, document trusted assumptions, threat model.

Layer 2 & Scaling
Optional

Ethereum L2s reduce fees and increase throughput while inheriting L1 security.

Optional Optimistic Rollups

Optimism, Arbitrum — fraud proofs, 7-day challenge period, OP Stack, Arbitrum Nitro.

Optional ZK Rollups

zkSync Era, Polygon zkEVM — validity proofs, no challenge period, EVM equivalence.

Optional Cross-Chain Bridges

Lock-and-mint, canonical bridges, third-party bridges (Stargate, Across). Bridge security risks.