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Backend Senior Engineer (Blockchain)

1inch Network

Remote worldwide

Posted over 1 year ago

One-stop access to decentralized finance

Tech stack

  • Web3

The 1inch Labs is a decentralised group of software builders and a key contributor to the 1inch Network. The 1inch Labs operates in the decentralised finance (DeFi) segment, which offers alternatives to traditional financial products, based on digital assets.

Among the 1inch Labs' products are the 1inch Aggregation Protocol, the 1inch Liquidity Protocol and the 1inch Limit Order Protocol, which enable users to swap crypto at the best rates, securely and fast.

The 1inch Labs' mission is to make DeFi services available to the highest possible number of users, offering them access to financial products built with cutting-edge tech.

Required work experience: 2+ years at blockchain and 5+ years overall


  • development of backend APIs and libraries using Node JS (TypeScript) + NestJS framework;
  • weekly participation in the design of architecture and review;
  • working with Ethereum-like blockchains on RPC API and low level;
  • code refactoring and metrics monitoring setup (Grafana, Kibana);


  • backend development experience on NodeJS at production;
  • confident knowledge of TypeScript / JavaScript;
  • advanced understanding of Ethereum like blockchains (EVM, Node RPC API, state-machine, ABI encoding, callstack traces reading);
  • deep knowledge of how DeFi protocols work at the smart contract level
  • having experience with Kubernetes and Docker;


  • Must have: NestJS (NodeJS + TypeScript), Solidity, Hardhat (or Truffle), microservices pattern, SQL (Postgres), Ethereum-like blockchains experience
  • Good to have: Golang, Vyper, Flashbots, TheGraph, DuneAnalytics, Tenderly;


  • Remote work, flexible hours (our team is distributed around the world).
  • Young creative team, vibrant environment and adequate leadership.
  • Suggestions welcome: propose an idea and execute it.
  • Competitive salary based on a candidate's skills and experience.
  • Work for a leader in its segment.
  • Compensation for work equipment.
  • Annual team building event at an international resort.



Role type

Full time

Visa sponsorship

Not provided

Benefits & perks

  • Remote Working

  • Flexible Working

  • Home Office Allowance

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