Senior Software Engineer II

Job description Senior Software Engineer — Customer Files Orchestration CoCounsel Legal is seeking a Senior Software Engineer to help build and operate the Customer Files Orchestration Service – the system that makes a customer's own documents usable by CoCounsel Legal's agents. Every file a customer brings to CoCounsel passes through this team: upload, storage, extraction, embedding, and indexing , orchestrated end-to-end. You make millions of customer files available to CoCounsel.

Bringing a customer's content together with Thomson Reuters' world-class proprietary content and the latest frontier models – including TR's own custom large language models – is what makes our products highly differentiated and our agent experiences genuinely grounded. This team is a critical part of what makes that combination possible. It is also, unavoidably, a hard distributed systems problem.

Supporting millions of files means real engineering: dedicated workers, fair queuing so one busy customer cannot starve another, durable state, idempotent processing, and honest reasoning about consistency and delivery guarantees across systems this team does not own. The team owns what it builds, designing, implementing, testing, deploying, scaling, and operating the service end-to-end. As a Senior Software Engineer you own a meaningful part of that service outright .

You are eager to ship something you’re proud of and become someone the team trusts.

Design & Technical Ownership O