Principal Backend Engineer, Collaboration Platforms

<div class="content-intro"><div class="ql-block" data-block-id="block-ac776bb3-c45a-49bd-9ccd-6eee2eb78c97">ClickUp is revolutionizing the way the world works. As the only all-in-one productivity platform built from day one for true convergence, ClickUp unifies tasks, docs, chat, calendar, enterprise search, and more—supercharged by context-driven AI. While others scramble to bundle fragmented tools or bolt on AI, we anticipated this future and made it our foundation from the start. Headquartered in San Diego with a rapidly expanding global footprint, we empower over three million teams to break free from silos and reclaim their time—saving at least one day every week. Join ClickUp, one of the fastest-growing SaaS companies on the planet, and help millions of users transform the way they work. We’re not just building software. We’re shaping the future of work. Come join us in building the future—together. 🦄</div> <div class="ql-block" data-block-id="block-ac776bb3-c45a-49bd-9ccd-6eee2eb78c97"> </div></div><div class="ql-block" data-block-id="block-0db9293c-9c28-4d80-907e-75da80756f7f">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.</div> <p> </p> <div class="ql-block" data-block-id="block-a464670a-4dfc-41cb-b093-9f7857aba261"><strong>The Opportunity:</strong></div> <div class="ql-block" data-block-id="block-e0b5ae5c-331b-418d-a3a3-79540e946463">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.</div> <div class="ql-block" data-block-id="block-59592f68-b248-4cb6-9fdc-3ccbb263e8b7">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.</div> <div class="ql-block" data-block-id="block-ec7c891d-7c66-43dd-a986-48b7dffbcfbf">This isn't a role for a whiteboard architect. This is a hands-on stewardship opportunity to transform a complex, mature architecture into a world-class, unified platform. You will diagnose deep, cross-cutting root problems, design a pragmatic path to overhaul our core systems, and guide by doing. Your success will be measured by the tangible improvement in our product's performance and the lasting, positive impact you have on ClickUp’s engineering culture.</div> <p> </p> <div class="ql-block" data-block-id="block-2799fb5c-2a09-44c1-bb48-462f38fd788a"><strong><span class="ql-comment ql-comment_active" data-comment-ids="98070003961859" data-track-unresolved-ids="false">What You’ll Do:</span></strong></div> <ul> <li>Own the long-term technical strategy for ClickUp’s core collaboration platforms, including real-time editing (RTE), live canvases, file uploads, and media streaming.</li> <li>Solve our most ambiguous architectural puzzles by diving deep across our full stack (Angular, Quill, WebSockets, Yjs, NodeJS, PostgreSQL, AWS).</li> <li>Cultivate operational excel ... (truncated, view full listing at source)