Senior Blockchain Developer

At Borderless Software, we believe that people drive everything we do . That’s why we build a work experience designed to help you grow, enjoy what you do, and develop professionally, without borders . We are looking for a Senior Blockchain Developer with experience who can create engaging, high-impact digital experiences. Would you like to join our team? Work Modality 100% Remote Full-time Language English: B2 level or higher Responsibilities Blockchain Development Design, develop, and audit secure and efficient smart contracts. Implement solutions on public and/or private blockchain networks. Define security, testing, and contract deployment standards. Optimize execution costs (gas) and on-chain performance. Actively participate in technical decisions and blockchain architecture definition. Web3 & Integrations Design and integrate decentralized applications (dApps). Integrate smart contracts with backend and frontend services. Work with wallets, cryptographic signatures, and key management. Design APIs and services that interact with the blockchain. Implement oracle mechanisms and off-chain data consumption. Architecture & Security Design hybrid on-chain/off-chain architectures. Implement secure smart contract patterns (upgradeability, access control). Prevent common vulnerabilities (reentrancy, overflow, frontrunning). Define scalability strategies (Layer 2, sidechains, batching). What We Expect from You 4–5+ years of experience in software development. 2–3+ years of hands‑on experience in blockchain development. Proficiency in at least one of the following languages: Solidity, Rust, Go, TypeScript, or JavaScript. Proven experience developing production‑grade smart contracts. Deep knowledge of: EVM and/or alternative blockchains (Solana, Polkadot, Cosmos), applied basic cryptography, transactions, gas, consensus, and validation mechanisms. Experience with frameworks such as Hardhat, Foundry, or Truffle. Experience integrating blockchain with traditional systems (APIs, databases). Nice to Have Experience with DeFi, NFTs, DAOs, or Web3 protocols. Knowledge of Layer 2 solutions (Optimism, Arbitrum, zk-rollups). Experience conducting smart contract audits. Knowledge of Cloud platforms (AWS, GCP, Azure). Experience with event‑driven architectures and microservices. Deep understanding of SOLID principles, DDD, and Clean Architecture. Participation in open‑source projects or Web3 communities. Ready to join our team? Apply now by completing the form —we’d love to meet you. #J-18808-Ljbffr Borderless Software