Principal Engineer, Collaboration Platforms

At ClickUp, we're building the future of work: the first truly converged AI workspace unifying tasks, docs, chat, calendar, and enterprise search, all supercharged by context-driven AI. We are an AI-native company. Every team member is expected to leverage AI daily, and we evaluate AI fluency as part of our hiring process. Join us and help redefine what's possible. 🚀 ClickUp is a high-growth SaaS company building an all-in-one productivity platform. We've unified project management, document collaboration, chat, and more to help over 20 million users and thousands of teams work more efficiently. With over $300 million in ARR, we're scaling rapidly and solving complex technical problems to support our global user base. The Opportunity: At ClickUp, our real-time collaborative surfaces are at the heart of our product. We are looking for a pivotal technical visionary to own the architectural vision for these tools and set a new standard of performance and reliability for our enterprise customers. This is fundamentally a distributed systems problem. You will be accountable for the core architecture that allows millions of concurrent users to collaborate with ultra-low latency. Your work will require a deep understanding of these real-time systems, including state consistency, concurrency models, and the trade-offs of CRDTs and operational transforms. This isn't a role for a whitebo