James Ephrati is a Growth Partner at Lightspeed Venture Partners, a venture capital firm. In this role, he focuses on identifying and supporting category-defining and sustainable software and consumer businesses.

Ephrati is also an active investor, notably in Cyera. He holds several board positions, serving as a Board Member at Mistral Ai and Thoughtspot, and as a Board Observer at Grafana Labs, Glean, and Yugabyte.