Designed, developed, and maintained 20+ enterprise applications supporting HR, logistics, evidence management, inventory, and document control. Built scalable backend systems and RESTful APIs using Node.js, TypeScript, Java, NestJS, and FastAPI. Developed full-stack web applications using React, Angular, Next.js, and modern frontend technologies. Integrated third-party APIs, authentication providers, and external business systems. Designed and optimized Oracle, SQL Server, PostgreSQL, MySQL, and MongoDB databases. Automated operational processes through APIs, webhooks, and workflow automation tools. Produced technical documentation and collaborated with cross-functional stakeholders. Leveraged AI-assisted development tools to accelerate delivery, debugging, testing, and documentation.