Frontend Engineering at Palantir: Engineering Multilingual Collaboration

This post details the implementation of read-only translation mode for Dossier, Palantir's collaborative text editor. It extends existing multilingual capabilities across other communication apps (Chat, Slides) by implementing secure, in-house translation. Key technical aspects include shared UI components, Redux state management for translation status, block-level chunking for balancing quality and speed, lazy, incremental translation using Intersection Observer API, handling real-time edits and collaboration. The post also discusses the trade-off of stripping formatting for translation quality and future work on preserving formatting.