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Backend Developer
XBIT
Job Description
Description
Job Responsibilities:
1. Design and develop backend systems for decentralized exchanges (DEX).
2. Develop and optimize smart contracts using Solidity (Ethereum, BSC) and Rust (Solana Anchor framework).
3. Integrate DeFi protocols, including swap, liquidity pools, staking, yield farming, and other functionalities.
4. Optimize gas fees, enhance the security of smart contracts, and prevent vulnerabilities such as reentrancy attacks and flash loan attacks.
5. Build and maintain backend services using Golang and/or Node.js to handle transactions and off-chain data.
6. Design Web3 APIs, WebSocket, and gRPC to facilitate communication between the frontend and the blockchain.
7. Utilize Oracle services and indexing tools (such as The Graph, Moralis) to process blockchain data.
8. Deploy and maintain services using AWS/GCP cloud services, Kubernetes, and Docker.
9. Collaborate with frontend and blockchain teams to optimize system performance and user experience.
10. (If applicable) Develop cross-chain solutions to achieve interoperability between blockchains such as Ethereum and Solana.
Requirements
Job Requirements:
1. Over 5 years of backend development experience.
2. Proficient in Solidity (Ethereum, BSC) and Rust (Solana Anchor framework).
3. Strong understanding of DeFi-related concepts such as Automated Market Makers (AMM), order books, liquidity pools, flash loans, yield farming, etc.
4. Proficient in Golang and/or Node.js, with an understanding of design principles for monolithic or microservices architecture.
5. Familiar with blockchain security, including common vulnerabilities (such as reentrancy, oracle manipulation, flash loan attacks).
6. Proficient in SQL and NoSQL databases, with knowledge of Redis and Kafka.
7. Understanding of EVM (Ethereum Virtual Machine), Solana Runtime, and Metaplex.
8. Experience with cloud deployment (AWS, GCP) and containerization technologies (Docker, Kubernetes).
Preferred Qualifications:
1. Experience with DEX platforms such as Uniswap, PancakeSwap, Serum, Raydium.
2. Understanding of Layer 2 scaling solutions, such as Optimistic Rollup, Zero-Knowledge Rollup (zk-Rollup), StarkNet.
3. Experience in developing cross-chain bridges and interoperability protocols.
Luna zhuo
HR ManagerXBIT
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