Published 1 day ago

Blockchain Developer

Osmium Consulting Group Limited

Job Description

Responsibilities:

                                              • Design, develop, and deploy smart contracts on EVM-compatible chains (Ethereum, Polygon, Arbitrum, Optimism, BSC, etc.) and/or non-EVM chains (Solana, Cosmos SDK, Substrate, etc.)
                                              • Build and maintain secure, scalable backend nodes, indexers, and off-chain services
                                              • Integrate blockchain protocols with front-end applications and third-party systems
                                              • Write comprehensive unit, integration, and end-to-end tests for smart contracts and backend services
                                              • Perform security audits and code reviews of smart contracts (internal and external)
                                              • Optimize gas efficiency and contract performance
                                              • Research and implement new blockchain technologies, layer-2 solutions, zk-proof systems, or consensus improvements
                                              • Collaborate with product managers, front-end developers, and DevOps to ship features quickly and reliably

Qualifications:

                                          • Bachelor’s degree or above in Computer Science, Software Engineering, or a related field
                                          • 3+ years of hands-on blockchain development experience
                                          • At least 3 years of blockchain development experience; proficient in Solidity; familiar with smart contract development and testing frameworks such as Hardhat/Foundry; familiar with the OpenZeppelin library.
                                          • Hands-on development experience with DeFi projects and understanding of derivatives trading mechanisms.
                                          • Solid understanding of smart contract vulnerability types and familiarity with blockchain security and auditing best practices.
                                          • Proven experience in optimizing smart contract performance
                                          • Good English reading and writing proficiency; able to read English technical documentation and conduct technical discussions without barriers.

Job Particulars

Job source
JobMarket
Job reference
2350401
Date published
08 Dec 2025
Job keywords
Information Technology, Full Time
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