Senior Blockchain Engineer

Job Description This is a remote position. We're looking for a Senior Blockchain Engineer who can take ownership of blockchain engineering, production readiness, smart contract implementation, and multi-chain integrations while working closely with our Technical Lead and founding team. This is a hands-on engineering role with significant technical ownership. You'll help shape the platform architecture, engineering standards, and long-term scalability—not simply execute predefined tasks. Much of the work involves integrating multiple blockchain and financial APIs into a unified developer experience. Job Description Production Engineering Harden the platform for production deployment Implement encryption at rest and in transit Design and maintain secure Role-Based Access Control (RBAC) Build comprehensive audit logging and monitoring Support security reviews and penetration testing Blockchain Development Build and maintain secure smart contracts using audited open-source standards (e.g., OpenZeppelin) Integrate and manage blockchain infrastructure across multiple networks Develop chain-agnostic transaction workflows Implement secure transaction lifecycle management Multi-Chain Infrastructure Expand support beyond existing integrations by working with: Ethereum Stellar Arbitrum Base Tempo Circle infrastructure Both EVM and non-EVM ecosystems Platform Development Develop and enhance: Off-chain audit records Reporting and treasury dashboards Local payout/off-ramp integrations Treasury management workflows Blockchain orchestration APIs Risk & Security Implement transaction controls including: Approval workflows Operational risk guardrails Compliance integrations Secure wallet management Chainalysis (or similar) transaction screening before fund release Requirements 5+ years of software engineering experience Strong Node.js and TypeScript development experience Experience building production REST APIs Strong React and Next.js experience Hands-on blockchain development experience Experience across both EVM and non-EVM ecosystems Practical experience with: Ethereum Stellar Smart contract development Experience integrating wallet infrastructure including WalletConnect Experience with RPC providers such as Alchemy or QuickNode Strong understanding of: Encryption Secure key management Audit logging RBAC Production security best practices Professional working proficiency in Arabic for collaboration with regional partners and compliance workflows