Job Description:
1. Design and implement backend services that interact with EVM smart contracts
2. Build and maintain REST / GraphQL APIs for frontend and internal tools
3. Integrate on-chain events with off-chain systems (indexing, listeners, state synchronization)
4. Work with smart contracts (Solidity) for task escrow, status tracking, and verification flows
5. Ensure data consistency between blockchain state and backend databases
6. Implement basic security, access control, and monitoring for production readiness
7. Collaborate closely with frontend and product to deliver end-to-end features
8. Write clear documentation for APIs and system behavior
负责与 EVM 智能合约交互的后端服务设计与开发
构建和维护 REST / GraphQL API，支持前端和内部系统
实现链上事件与链下系统的数据同步（索引、监听、状态同步）
配合 Solidity 合约完成任务托管、状态跟踪和验证流程
确保区块链状态与后端数据库之间的数据一致性
实现基础的安全、权限控制和监控能力
与前端及产品团队协作，推进端到端功能交付
编写清晰、可维护的技术文档
Job Requirements:
1. 4+ years of experience in backend or full-stack development
2. Strong experience with Node.js / TypeScript or Golang
3. Hands-on experience with EVM-based blockchains (Ethereum, Arbitrum, Base, etc.)
4. Experience integrating smart contracts with backend services using Web3.js or Ethers.js
5. Solid understanding of RESTful APIs, databases (PostgreSQL / MySQL), and backend architecture
6. Familiarity with on-chain event handling, indexing, or state synchronization
7. Ability to work independently and take ownership in a remote environment
8. Comfortable working in an MVP-stage product with fast iteration and evolving requirements
9. Good written and verbal communication skills in English
NICE TO HAVE:
Experience writing or reviewing Solidity smart contracts
Familiarity with Docker, CI/CD, or basic cloud infrastructure (AWS / GCP)
Previous experience working in early-stage startups or Web3 products
4 年以上后端或全栈开发经验
熟悉 Node.js / TypeScript 或 Golang
有 EVM 链（如 Ethereum、Arbitrum、Base 等）开发经验
熟悉 Web3.js 或 Ethers.js，并有合约与后端集成经验
熟悉 REST API、数据库（PostgreSQL / MySQL）和后端架构
能独立推进工作，具备较强的责任意识（ownership）
能适应 MVP 阶段的快速迭代节奏
英文工作沟通能力为必需，中文能力为加分项
额外加分项：
具备Solidity智能合约编写或审核经验
熟悉Docker、CI/CD或基础云基础设施（AWS/GCP）
曾任职于早期初创公司或Web3产品团队的技术开发与搭建
Benefits:
1. Fully remote work with flexible working hours
2. High ownership role with real impact on the core product
3. Direct collaboration with the founder and core team
4. Opportunity to grow into a long-term technical leadership role
5. Early core contributor status with potential future token or incentive rewards based on contribution
全程远程办公，时间灵活
作为核心岗位参与产品和技术架构决策
直接与创始人及核心团队合作
有机会成长为长期技术负责人或核心技术成员
作为早期核心成员，未来有机会获得项目代币或激励奖励
