Backend Tech Lead - Crypto

CFI Financial Group is an award-winning global trading provider with more than 25 years of experience and multiple offices around the world including London, Larnaca, Beirut, Amman, Dubai, Kuwait, Port Louis, and more.CFI is hiring! Make your mark in the fast-growing world of online trading and cryptocurrency.OverviewWe are seeking a Backend Tech Lead – Crypto to drive the design, development, and scalability of our blockchain and crypto-related backend systems. This role is ideal for a senior engineer with deep expertise in backend engineering and blockchain technologies who can lead a team, set technical direction, and deliver secure, high-performance solutions.As Tech Lead, you will oversee the architecture and implementation of backend services that power cryptocurrency trading, custody, and settlement, while ensuring the highest standards of security, reliability, and scalability.ResponsibilitiesLeadership & CollaborationLead and mentor backend engineers working on crypto and blockchain projects.Define coding standards, best practices, and ensure technical excellence across the team.Collaborate with product managers, frontend/mobile teams, and leadership to align backend systems with business needs.Review designs, code, and architecture to ensure high quality and maintainability.Backend EngineeringDesign, build, and maintain APIs and microservices for crypto trading and settlement systems.Optimize SQL/NoSQL database structures for scalability, performance, and reliability.Implement robust authentication, authorization, and security practices across backend services.Ensure systems are fault-tolerant, efficient, and meet compliance requirements.Integrate with third-party services, crypto exchanges, blockchain networks, and internal APIs.Blockchain & Crypto DevelopmentLead the development, testing, and deployment of smart contracts (Solidity, Rust, Move, etc.).Work with EVM-compatible chains (Ethereum, Polygon, BNB Chain) and emerging ecosystems (Solana, Cosmos, Polkadot, Layer 2 solutions).Integrate backend systems with DeFi protocols, token standards (ERC-20, ERC-721, ERC-1155), and digital wallets.Ensure gas efficiency and high transaction throughput in blockchain interactions.Stay updated on protocol upgrades, consensus mechanisms, and blockchain security best practices.Requirements:Education/Experience: Bachelor’s degree in Computer Science or equivalent experience.Backend: Proficiency in Python. Strong understanding of REST APIs and database systems.Mobile: Hands-on experience with Flutter development.Tools & Infrastructure: Familiarity with Docker, Kubernetes, CI/CD pipelines, cloud platforms(AWS).Version Control & Collaboration: Strong Git workflow knowledge, agile methodologyexperience.Strong problem-solving skills, attention to detail, and ability to work in cross-functional teams.Preferred QualificationsFamiliarity with design systems and component libraries.Knowledge of DevOps and infrastructure as code.Experience with performance monitoring and analytics tools.Previous work in scaling applications to large user bases.Previous experience in trading and financial fields