David Marshall

Senior Full Stack Engineer with 9+ years of experience building scalable web, blockchain, and AI/ML systems across media & content platforms, fintech/crypto exchanges, Web3/NFT marketplaces, AI product studios, and warehouse automation. Strong hands-on expertise in JavaScript, React, Node.js, Java, PostgreSQL, MongoDB, AWS, and OpenAI APIs. Hands-on experience in system architecture, end-to-end product delivery, smart-contract development, real-time platforms, CI/CD, performance optimizations, compliance integrations, data-driven features that measurably reduce operational costs and accelerate time-to-market, and mentoring engineering teams.