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Senior Backend Developer

RemoteFull-timeGlobal
šŸ“Š MidšŸ  Remote
RemoteRemote work position availableActivePosted within the last 30 days

Job Description

[AI-summarized by JobStash]

You will own two production-critical services: a DeFi yield product that lets users earn on crypto through leading EVM lending protocols without giving up custody, and a gasless transaction service that relays signed transactions while paying gas in ERC-20 stablecoins. You will add support for new chains and fee tokens, implement meta-transaction flows (EIP-712, EIP-7702), build backend layers that sign broadcast and monitor on-chain transactions, handle on-chain event ingestion via webhooks and background jobs, manage production releases including migrations rollback plans and RPC failover, write unit integration and end-to-end tests, and instrument services for observability.

Requirements

  • ā—Strong production experience with Node.js and frameworks like NestJS
  • ā—Hands-on experience building on EVM chains with Ethers.js or viem
  • ā—Familiarity with the EVM transaction model including signing gas nonces and RPC failover
  • ā—Experience with PostgreSQL and writing efficient SQL
  • ā—Solid understanding of common application security vulnerabilities
  • ā—Experience writing unit and end-to-end tests
  • ā—Experience with monitoring logging and debugging production issues

Responsibilities

  • ā—Add support for new chains fee tokens and yield protocols
  • ā—Build backend layer that signs broadcasts and monitors on-chain transactions
  • ā—Implement meta-transaction flows based on EIP-712 and EIP-7702
  • ā—Handle on-chain event ingestion via webhooks and background jobs
  • ā—Own production releases including migrations rollback plans and RPC failover
  • ā—Write unit integration and end-to-end tests
  • ā—Instrument services for observability
  • ā—Participate in planning estimation and architecture decisions

Benefits & Perks

  • ā—Remote work from anywhere in the world
  • ā—Unlimited vacation
  • ā—Birthday presents
  • ā—Compensation for purchase of necessary technical devices
  • ā—Paid sick leaves

Tech Stack

meta-transactionERC-2771background jobloggingRPCEVMobservabilityPostgreSQLTypeORMtestingproject:Tangem AG
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