Blockit is a Series A, Sequoia-backed AI time agent.

It learns your preferences and can autonomously coordinate meetings to any degree of complexity (timezones, group scheduling, IRL, etc) similar to an executive assistant – but never goes to sleep and responds instantly. It is the foundation of a massive platform of AI agents that will have access to the world's time. The more people who continue to link their calendars to Blockit, the more powerful our network becomes

To date, no one has built a multiplayer LLM application. All LLM apps so far have been one-on-one conversations (ChatGPT, Claude, Perplexity, etc) – however, at Blockit, we have built one of the first-ever multiplayer, stateful agents.

As a backend-leaning full stack engineer, you’ll lead development on the intelligence layer of our scheduling agent — the system that determines who you should meet, when, and why. You’ll build infrastructure to interpret behavioral signals, relationship data, and calendar activity, and create smart logic that makes the agent feel truly contextual and human. You’ll work closely with design and product to ship intelligent features like warm intros and AI-driven proposals, while owning and scaling the backend systems that power them. This is a high-impact role for someone who thrives on autonomy, cares deeply about product experience, and wants to shape a tool that helps people connect better through time.