Blockchain Developer (Solidity & Rust)

Responsibilities

• Design, develop, and deploy smart contracts using Solidity on EVM-compatible blockchains
• Build and maintain Rust-based blockchain modules, such as on Substrate or Solana-compatible platforms
• Contribute to the design of custom blockchain protocols and token standards
• Write secure, gas-optimized, and thoroughly tested smart contracts
• Collaborate with frontend and backend teams to integrate blockchain components into products
• Conduct code reviews, audits, and vulnerability assessments for blockchain code
• Analyze and improve the performance, security, and scalability of the Caiz blockchain

Requirements

• 3+ years of experience in blockchain development with hands-on coding in Solidity and Rust
• Strong understanding of smart contract design, blockchain architecture, cryptography, and consensus mechanisms
• Experience developing and deploying smart contracts on Ethereum or similar EVM chains
• Proficiency in Rust for blockchain environments such as Substrate or Solana
• Familiarity with Web3.js, Ethers.js, Hardhat, Truffle, and related tools
• Understanding of DeFi protocols, token standards (ERC-20, ERC-721, etc.), and layer-1/layer-2 ecosystems
• Bachelor’s degree in Computer Science, Software Engineering, Mathematics, or a related technical field
• Fluency in English

Preferred Qualifications

• Experience in building or contributing to a Layer 1 or Layer 2 blockchain
• Knowledge of blockchain security best practices and audit processes
• Exposure to zero-knowledge proofs (ZK), rollups, or cross-chain bridges
• Experience working within agile or startup environments
• Understanding of Islamic finance or Sharia-compliant financial principles

Benefits

• Competitive financial compensation
• Work flexibility (remote, office, or abroad)
• Generous paid annual holidays
• Relocation assistance for eligible employees
• Professional development, training, and certification opportunities
• Employee recognition programs
• Inclusive and collaborative work culture

About the Company

Caiz is building the first Islamic ecosystem built on blockchain. Our mission is to create a Fiqh-compliant financial ecosystem that provides our community with fair and easy access to ethical financial products and services. Through our native coin, Caizcoin, and the Caizapp, we are reshaping the future of finance by combining advanced blockchain technology with the principles of Islamic finance.