Backend Software Engineer (AWS, Smart Contract) at Phi Labs

  • Programming
  • Fulltime
  • Anywhere (100% Remote) Only
Job Description

About us

Our mission is to visualize on-chain identity and create an open and inclusive metaverse land system that is based on universal web3 building blocks, such as ENS domains and wallet activity.

We believe that everyone with an ENS domain or some sort of on-chain activity should be granted virtual land and the ability to build upon it. We propose to generate virtual lands from ENS domains and populate them with objects that represent on-chain activities (e.g. achievements, status, communities).

About the Role

With a focus on world-class UX and community, you'll take ownership of the entire development lifecycle and quickly ship features in an agile environment.

The code must be clean, easy to audit, yet efficient in terms of deployment, execution, and maintenance.

You will analyze numerous services and create a proof system for on-chain activities.


  • 5+ years of experience in engineering
  • 3+ years of experience in backend web application development
  • Experience developing large-scale services using AWS-CDK and TypeScript
  • Comfortable working with cloud-native AWS infrastructure (DynamoDB, lambda, SQS)
  • Fluent in English or Japanese

You'll have expert knowledge of:

  • Designing services using NFT

Major plus if you have experience with:

  • Experience in maintaining AWS production services
  • Background in mathematics and cryptography
  • Has experience developing Solidity Smart Contracts and protocols (audit experience ++)
  • Has experience analyzing on-chain data
  • Has experience with open-source

We're also looking for experience with:

  • Game developer
  • Experience or strong interest in learning ZK programming languages such as Circom or Noir


Tech stack

Tech stack

  • Back: Typescript, Node.js
  • DB: DynamoDB, Redis
  • APIs: REST, GraphQL, the Graph
  • Infra: AWS infrastructure, Github Action, Alchemy, Tenderly
  • Front: React/Next


  • Ability to take large ownership at the early phase
  • Remote-friendly (no core time)
  • Participation in some of crypto’s biggest events and conferences
  • Become entrenched in the web3 social, identity communities and ZK 

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