Senior Blockchain Developer (On-Chain Aggregation)

Buidlpad • Remote, remote, remote

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Position Overview

We are seeking a seasoned Blockchain Developer to focus on building the next-generation DeFi trading aggregator. You will be responsible for designing and implementing efficient on-chain transaction routing algorithms, deeply optimizing trade execution across multiple DEXs to provide users with the best possible prices.

Key Responsibilities

Design and implement efficient, on-chain smart contract systems for trade aggregation.
Deeply integrate mainstream DEX protocols, with **expert-level knowledge of Uniswap V2/V3/V4 mechanisms being mandatory**.
Develop optimization algorithms based on the Uniswap V3 tick system to discover the best possible paths within tick ranges.
Build complex routing strategies across multiple liquidity pools to maximize trade efficiency.
Implement MEV protection mechanisms, including protection against sandwich attacks and front-running.
Perform security audits and performance optimizations for smart contracts to ensure fund safety.
Work closely with the off-chain indexing team to design an efficient on-chain/off-chain collaborative architecture.

Qualifications & Requirements

**4-6 years** of blockchain development experience, with **mandatory proficiency** in Solidity and smart contract development.
**Deep understanding** of Uniswap V2/V3/V4 protocol mechanics, especially V3's tick system, concentrated liquidity, and fee calculation.
Hands-on experience integrating DEXs; familiarity with major decentralized exchanges like PancakeSwap and Uniswap.
Ability to develop price optimization algorithms based on tick data, understanding liquidity distribution within tick ranges.
Familiarity with common DeFi attack vectors and their mitigation (e.g., sandwich attacks, reentrancy).
Prior experience with trade aggregators, routing optimization, or AMM protocol development is highly preferred.
Familiarity with the EVM Chain ecosystem and its best practices for Gas optimization and contract deployment.
Bachelor's degree or higher in Computer Science or a related field.