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Innowise

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backend developer in Web3

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Summary

Backend developer on a Web3 project: building blockchain transaction pipelines (nonce/gas/retry handling) and event-driven microservices in Node.js/TypeScript, integrating EVM networks and DeFi protocols via RPC and libraries like ethers.js/viem, at software firm Innowise in Poland.

Описание:

Innowise is a software development company that has implemented more than 1,600 cases for clients from the USA, Denmark, Germany, and other countries.

Задачи:

Strengthen the team and contribute to Web3 backend development.

Требования:

  • 5+ Years of commercial experience with Node.js / TypeScript development, including hands-on experience in blockchain / Web3 projects
  • Strong understanding of blockchain transaction architecture, including transaction lifecycle, nonce management, gas/fee models, confirmation mechanisms, and transaction resubmission strategies
  • Experience integrating with EVM-compatible networks such as Ethereum, Arbitrum, Base, and Polygon
  • Experience building transactional pipelines, including queue management, retry mechanisms, and idempotency handling
  • Experience working with event-driven microservice architectures using Kafka, RabbitMQ, or SQS
  • Experience interacting with blockchain nodes via RPC and understanding the specifics of working with node providers
  • Hands-on experience with Web3 libraries such as ethers.js, viem, web3.js, or similar
  • Understanding of DeFi protocols, including AMMs, lending protocols, bridging solutions, and on-chain routing mechanisms
  • Basic understanding of Web3 security principles, including custodial vs. non-custodial architectures and transaction signing processes
  • English proficiency at B2 level or higher
  • Nice to have: Experience integrating custodial providers and wallet infrastructure solutions, familiarity with non-EVM ecosystems such as Solana, TON, and Tron, experience working with on-chain indexing solutions such as The Graph or custom-built indexers
  • Full-Stack development experience with React, wagmi, and frontend development, familiarity with rollup architectures and interoperability protocols such as LayerZero and Wormhole

Условия:

  • Flexible work schedule
  • Experience of working with clients all over the world
  • Financial assistance
  • Medical insurance

Skills

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See also

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