Polkadot Jobs

Blockchain Developer
Job Description
Requirements :
Knowledge, Skills, And Abilities

• Must have experience with some combination of the following DLT-related technologies: Hyperledger Fabric, Node.js, Go, Composer, Ethereum, Solidity, Truffle, web3.js, Goerli Testnet, Alchemy Geth, Corda, NEO
• Must have excellent programming and scripting skills with a solid understanding of Object Oriented Design principles in a Linux environment. Experience with Java, Python and JavaScript is a plus.
• Test Driven or Behaviour Driven testing to validate your code using modern testing tools such as mocha /jest and cypress preferably using a CI/CD pipeline.
• Must have experience with database design and development. Significant experience with MongoDB, Neo4j, PostgreSQL, MySQL and GraphQL.
• Experience working with Docker and/or Kubernetes as well as basic deployment knowledge of recognized cloud providers such as Azure, AWS, and GCE.
• Proven expertise in Blockchain architecture and applications, tokenisation and smart contracts, encryption, Proof of Authority Blockchain customization, improving performance and scalability of public Blockchain, presenting and teaching Blockchain workshops
• Should have Hyperledger Fabric-based Blockchain implementation experience, Golang-based Chaincode creation, NodeJS-based APIs creation
• Experience with blockchain/s through development phases (including smart contracts)
• Deep knowledge of smart contracts including testing, implementation, and scaling
• Must have experience with the development of RESTful web services
• Expertise in public key cryptography and other encryption methods Required technical experience:
• At least 2 years of experience as a blockchain developer.
• Bachelor's degree in information security, computer science, or related.
• Extensive experience in back-end development, algorithms, and data structures.
• Knowledge of cryptography and blockchain protocols.
• In-depth knowledge of best practices in blockchain management and data protection.
• Advanced analytical and problem-solving skills.
• Superb organizational skills and keen attention to detail.
• Excellent communication and collaboration abilities.

• Secure Solidity development patterns
• JavaScript Ethereum SDKs (web3.js, ethers.js)
• Most prominent ERC/EIP Ethereum standards
• Smart contract development tools/frameworks (Truffle, Hardhat)
• Smart contract auditing tools (MythX, other) Bonus Points for Track Records or Knowledge of
• Experience building DEX, eMarkets, supply chain, traceability or ESG CVP platforms.
• Knowledge of DAO and its use cases
• Understanding of various blockchain platforms such as Ethereum, Solana, Polkadot, Algorand and Hyperledger
• Crypto incentive systems
• Open-source database projects
• Defi protocols mechanics and smart contract codebases, and/or digital assets/payments and other token standards - Cross-chain interoperability techniques (HTLC, bridging)
• Layer 2 technologies (ZK/optimistic rollups, PoS/PoA sidechains)
• Smart contract auditing techniques - EVM Internal