Field builder · Funders · Berkeley, CA · Est. 2021
Lightcone Infrastructure is a Berkeley-based 501(c)(3) nonprofit that builds “infrastructure” for the rationality and AI-risk reduction ecosystem—especially through operating the LessWrong community and a physical campus venue, Lighthaven, and through building grantmaking/coordination software and platforms. Operationally, Lightcone’s work centers on maintaining and improving major community “intellectual commons” (LessWrong and the AI Alignment Forum, as part of its portfolio) and on running Lighthaven as an event and convening space in Berkeley.
The organization also develops and operates supporting programs and software aimed at making philanthropy and coordination more effective—most visibly through its work on grantmaking infrastructure with the Survival and Flourishing Fund and through its subsequent launch of Lightcone Commons, which is positioned as an end-to-end platform for coordinating ambitious philanthropy.
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Lightcone Infrastructure’s 2026 fundraiser page describes the amount raised vs. goal and outlines 2025 spend priorities (including work on LessWrong development and Lighthaven support), positioning the organization’s near-term operating needs.
Hiring / “Work with Us” page lists active roles and reaffirms Lightcone’s CFAR relationshipLightcone publishes active hiring roles (Senior Designer, Core-team generalist, Campus Operations co-lead) and states Lightcone Infrastructure is a project by the Center for Applied Rationality.
Senior Designer role description references AI 2027 and LessWrong design impact as rationaleThe Senior Designer hiring post explains design priorities and points applicants to a LinkedLessWrong hiring context.
Core-team generalist role description: sprint-level reconfiguration and hiring culture signalsLightcone describes core-team generalist work as spanning design, backend programming, running conferences, operations, fundraising, and more, with frequent sprint-level reconfiguration.
Campus Operations Co-Lead posting details Lighthaven size and scope of events and fellowshipsThe Campus Operations Co-Lead posting describes Lighthaven’s use for festivals and multi-month fellowships and lists examples of responsibilities and recent projects.