Backend Engineer — Blockchain Indexing & Marketplace

Summary

NodeMeta is a Web3 ecosystem built on BNB Smart Chain, developing decentralized products including an NFT marketplace, staking ecosystem, and blockchain-powered commerce platforms. The Backend Engineer will own the backend, indexing, and API layer, focusing on blockchain indexing, API development, data consistency, performance, and production-ready backend systems.

Responsibilities

• Design and develop backend services using Node.js and Express
• Build and maintain blockchain indexers for NFT, staking, marketplace, and payment events
• Process real-time and historical blockchain data reliably
• Build REST APIs for NFT browsing, search, filtering, listings, bids, and transactions
• Design PostgreSQL schemas for marketplace, transaction, user, and blockchain data
• Implement Redis caching and optimize database and API performance
• Handle blockchain reorganizations, duplicate events, and on-chain/off-chain data consistency
• Build backend services for SmartCommerce orders, payments, settlement, and fulfillment
• Integrate IPFS/Arweave metadata with marketplace APIs
• Write comprehensive unit and integration tests and maintain clear technical documentation
• Build monitoring and alerting for indexer and API health

Skills

• 2+ years of professional backend development experience with Node.js
• Strong experience with Express, REST API design, and backend architecture
• Solid PostgreSQL experience, including database design and query optimization
• Hands-on experience with Redis or similar caching systems
• Familiarity with blockchain event processing and on-chain/off-chain data synchronization
• Experience with The Graph, custom indexers, ethers.js, web3.js, or similar blockchain tools
• Strong understanding of distributed systems and data consistency
• Ability to build scalable, reliable, and maintainable backend services
• Good written English and ability to work independently in a remote environment
• GraphQL optional

Qualifications

Must Haves

• 2+ years of professional backend development experience with Node.js
• Strong experience with Express, REST API design, and backend architecture
• Solid PostgreSQL experience, including database design and query optimization
• Hands-on experience with Redis or similar caching systems
• Familiarity with blockchain event processing and on-chain/off-chain data synchronization
• Experience with The Graph, custom indexers, ethers.js, web3.js, or similar blockchain tools
• Strong understanding of distributed systems and data consistency
• Ability to build scalable, reliable, and maintainable backend services
• Good written English and ability to work independently in a remote environment

Nice to Haves

• GraphQL optional

Benefits

• Fully remote work arrangement