Blockchain Engineer

About the Roley

Blockchain Engineer

Key Responsibilities

• Design and develop smart contracts using

  Solidity

  ,

  Rust

  , or other blockchain languages.
• Architect and build decentralized applications (

  dApps

  ) on blockchain platforms like

  Ethereum

  ,

  Solana

  ,

  Polkadot

  ,

  Hyperledger

  , etc.
• Integrate blockchain protocols with front-end applications and backend services.
  
• Maintain and upgrade existing blockchain systems and infrastructure.
  
• Ensure the performance, quality, and responsiveness of applications.
  
• Conduct security audits and mitigate smart contract vulnerabilities.
  
• Stay updated on blockchain trends, tools, and technologies.
  
• Collaborate with product and design teams to deliver end-user functionality.

Required Skills & Qualifications

• Bachelors or Masters degree in Computer Science, Engineering, or a related field.
  
• Solid experience with

  blockchain protocols

  (Ethereum, Solana, BNB Chain, etc.).
• Hands-on experience with

  Solidity

  ,

  Web3.js

  ,

  Ethers.js

  , or

  Rust

  .
• Strong understanding of

  smart contracts

  ,

  cryptographic principles

  , and

  token standards

  (ERC-20, ERC-721, ERC-1155).
• Proficiency in backend technologies such as

  Node.js

  ,

  Go

  ,

  Python

  , or

  Java

  .
• Familiarity with development tools like

  Truffle

  ,

  Hardhat

  ,

  Ganache

  ,

  Remix

  , etc.
• Understanding of Layer 1 and Layer 2 scaling solutions.
  
• Knowledge of blockchain consensus mechanisms (PoW, PoS, DPoS, etc.).
  
• Experience working with APIs, RPCs, and GraphQL in the blockchain context.
  
• Experience with version control (Git), CI/CD, and DevOps practices.

Preferred Qualifications

• Experience with DeFi, NFTs, or DAO development.
  
• Contributions to open-source blockchain projects.
  
• Experience with off-chain storage (IPFS, Arweave) and oracles (Chainlink, Band).
  
• Knowledge of cryptography, zero-knowledge proofs (zk-SNARKs, zk-Rollups), and privacy-preserving technologies.
  
• Familiarity with testing and auditing tools (MythX, Slither, Echidna).