Lead/Snr Full-Stack Engineer (Node.js/Python/LLM/prompt engineering)

IDT Corporation, a NYSE-listed global communications leader with $1.5B in revenue, is seeking a Lead/Senior Full-Stack Engineer to develop a groundbreaking WhatsApp conversational bot for their money remittance platform. This role combines AI-driven prompt engineering, human-centered conversational UX, and complex backend integrations for handling regulated financial transactions.

The position offers a unique opportunity to work at the intersection of AI, human behavior, and software engineering. You'll be joining post-prototype stage, helping shape the long-term system architecture and influencing both technical implementation and user experience. The role involves designing prompts and flows that maintain natural, useful conversations while handling complex financial operations.

Key responsibilities include implementing prompt engineering strategies using LangChain and LangGraph, developing backend systems with Python and Node.js, and creating secure transaction flows. You'll work with WhatsApp Cloud API, payment processing systems, and deploy solutions using Docker/AWS.

The ideal candidate brings 5+ years of production experience, strong backend skills in Node.js/NestJS, and frontend expertise with React. Experience with WhatsApp Business Platform, LangChain, and financial systems is highly valued. This remote position offers excellent benefits including professional development opportunities and competitive compensation.

Join a team of 1800+ professionals across 20 countries, working on innovative solutions in the financial technology sector. This role presents an exciting opportunity to shape the future of conversational AI in financial services while working with cutting-edge technologies.