• We are seeking a Senior Blockchain Engineer / Architect to lead the design, development, and deployment of our cryptocurrency exchange platform’s core blockchain infrastructure. This role is instrumental in building the backbone of an exchange—including the matching engine, wallet infrastructure, multi-chain integration, and on-chain/off-chain settlement systems. You will work at the intersection of distributed systems, cryptography, and high-frequency financial technology.

Core Responsibilities

Platform Architecture & Development

• Design and build the core exchange architecture including order matching engine capable of processing 1,000,000+ transactions per second with sub-millisecond latency
• Architect a multi-chain wallet system supporting 500+ tokens across EVM-compatible chains (Ethereum, BSC, Polygon, Arbitrum), Solana, Bitcoin, and other Layer 1/Layer 2 networks
• Develop hot wallet, warm wallet, and cold wallet infrastructure with automated fund sweeping, rebalancing, and threshold-based signing workflows
• Build deposit/withdrawal processing pipelines with real-time blockchain monitoring, confirmation tracking, and automated reconciliation
• Design and implement a high-throughput internal ledger system for off-chain balance management and trade settlement
• Blockchain Integration & Smart Contracts
• Develop and audit smart contracts for token listings, staking programs, launchpad/IEO functionality, and DeFi yield products
• Build blockchain node infrastructure management (full nodes, archive nodes, light clients) with failover, load balancing, and health monitoring
• Implement cross-chain bridge integrations and atomic swap capabilities for seamless multi-chain asset transfers
• Create gas optimization strategies and dynamic fee estimation models across all supported networks
• Integrate with DeFi protocols (Uniswap, Aave, Compound) for liquidity aggregation and yield generation features
• Security & Compliance
• Implement multi-signature (MPC/TSS) key management using hardware security modules (HSMs) and threshold cryptography
• Design anti-money laundering (AML) and Know Your Customer (KYC) on-chain transaction monitoring and risk scoring systems
• Build real-time fraud detection systems leveraging blockchain analytics for suspicious transaction patterns, wash trading detection, and market manipulation prevention
• Conduct and coordinate smart contract security audits, penetration testing, and bug bounty programs
• Ensure compliance with international regulatory frameworks including MiCA (EU), MAS (Singapore), VARA (Dubai), and SEC guidelines
• Performance & Scalability
• Optimize exchange backend for ultra-low latency order processing using memory-mapped data structures, lock-free algorithms, and kernel bypass networking
• Design microservices architecture with event-driven systems (Kafka/Pulsar) for real-time market data streaming, order book updates, and trade execution notifications
• Implement horizontal scaling strategies for handling peak loads of 10M+ concurrent WebSocket connections for real-time price feeds
• Build comprehensive monitoring, alerting, and observability infrastructure (Prometheus, Grafana, distributed tracing) for the entire exchange stack
• Product Features
• Develop spot trading, margin trading, futures/perpetuals, and options trading engines with risk management and liquidation systems
• Build staking-as-a-service infrastructure supporting proof-of-stake validator operations and delegation mechanics
• Implement P2P trading marketplace with escrow smart contracts and dispute resolution mechanisms
• Design APIs (REST, WebSocket, FIX protocol) for institutional traders, market makers, and third-party integrations
• Build a launchpad/token listing pipeline with automated smart contract verification, tokenomics analysis, and liquidity provisioning

Required Qualifications

Education & Experience

• Bachelor’s or Master’s degree in Computer Science, Cryptography, Distributed Systems, or a related field
• 3+ years of software engineering experience with at least 2 years focused on blockchain/Web3 technologies
• Demonstrated experience building or significantly contributing to a production cryptocurrency exchange, DeFi protocol, or fintech platform handling $100M+ in daily volume
• Track record of designing systems that operate at scale with 99.99% uptime requirements

Technical Skills

• Expert-level proficiency in at least two of: Rust, Go, C++, Java, or Solidity
• Deep understanding of blockchain consensus mechanisms (PoW, PoS, BFT variants), Merkle trees, cryptographic hash functions, and elliptic curve cryptography (ECDSA, Ed25519)