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Christopher Sim is on Cosign.
Christopher Sim is on Cosign.
Career
Member of the Design Staff at OpenAI from 2026-09 to Present in San Francisco, CaCodex Enterprise. I'm also a design advisor for the OpenAI Foundation, working on initiatives focused on youth safety on ChatGPT and drug discovery.
Member of the Design Staff at Harvey from 2024-09 to PresentDesigner #2. My work has touched almost every surface of the product and laid the foundations for where Harvey is today.
Some projects I worked on, large-scale retrieval/extraction, memory, long-horizon agents, search, AI file actions, voice mode, artifacts, Word add-in, etc.Worked with Aatish Nayak.
Senior Product Designer at Arc from 2023-05 to 2024-08 in San Francisco, CADesigner #2. I worked on our banking, procurement, spend, and growth products. Arc was acquired in July, 2026.
Product Designer at Flexport from 2022-07 to 2023-05 in Seattle, WAObservability and telemetry
Product Designer at Uber from 2022-01 to 2022-06 in Seattle, WARider and driver app