Principal Software Engineer-AI

Job description

This posting is for proactive recruitment purposes and may be used to fill current openings or future vacancies within our organization. Principal Software Engineer-AI Thomson Reuters is building the AI platform that will power the next decade of tax and accounting products, including CoCounsel for Tax and Accounting – a suite of AI‑native products used by accountants on real client work every day. As a Principal Software Engineer , you will own core backend and AI orchestration systems that turn frontier models into reliable, production‑grade workflows at scale. This role is for the CoCounsel for Tax and Accounting team , formed from the recent acquisition of the startup Materia . Why this role is different: - Own the AI backbone : You will be the principal engineer responsible for the backend and orchestration layer powering AI agents, conversations, workspaces, and knowledge base across CoCounsel for Tax and Accounting. - Shape the company's AI platform and patterns : Define patterns for building MCP servers, designing agents, novel uses of LLMs, experimentation, and scalable infrastructure. Your decisions will influence multiple product lines, not just a single feature. - Work...