Zan - Zari Group is hiring Mobile Localization Engineer job (Remote only)

Shalem is a React Native/Expo app (Supabase backend, Anthropic Claude for content generation) currently shipping English-only. Story content is being translated separately; this role owns making the app itself function correctly in additional languages — UI, content delivery, AI-generated text, and audio. What you'll actually be doing Extract ~150 screens/components' hardcoded English strings into a proper i18n catalog (react-i18next or similar) and build a working language switcher (the current Settings → Language screen is a non-functional stub) Wire the existing but unused translations JSON field on the stories table into every place that serves story content (match-stories, create-sharing, deliver-path-day Supabase edge functions) Add a stored user-language preference and thread it into the Claude prompts that generate reflections, bridge text, and Path day content, so AI output responds in the user's language Evaluate and implement a strategy for semantic story matching across languages (currently English-only OpenAI embeddings) — either per-language embeddings or a hybrid English-match/localized-display approach Coordinate per-language ElevenLabs audio generation for the app's 4 voices and QA the output Localize push notification, email, and in-app subscription/cancel-flow copy Test end-to-end in each target language before rollout Required skills React Native / Expo — strong, hands-on (this is not optional; most of the work is here) TypeScript across a real codebase, not toy projects Supabase (Postgres, RLS, Edge Functions in Deno/TypeScript) Experience shipping i18n in a mobile app — string extraction, locale switching, RTL/formatting edge cases Comfortable working with LLM APIs (Anthropic Claude) — prompt structure, not model training Git workflow discipline; ability to work from a spec without heavy hand-holding Nice to have Experience with OpenAI embeddings / vector search (pgvector) ElevenLabs or other TTS API integration RevenueCat Hebrew or other RTL language familiarity (bonus given the app's content domain) Application process Candidates who pass the initial interview will be asked to complete a take-home technical assignment before an offer is made: A small sample React Native/Expo repo with ~10 screens, requiring you to: wire up i18n, extract hardcoded strings into an English + Spanish catalog, build a working language switcher, and connect it to a Supabase field storing translated content. The deliverable must run on a physical device or a real device build (EAS dev build / expo run:ios / expo run:android) — an Expo Go simulator screenshot or recording will not be accepted. Submit a screen recording of the language switch working on that build, plus a PR with your code. Expected time: 3–5 hours. This assignment is unpaid and is the final step before an offer decision.