Sentio is a product company building spiritual wellness apps for people around the world.
About the role
Right now — developing the web product end-to-end (funnel UI, APIs, Firestore, notifications). Next — bringing the product to native apps on React Native + Expo, reusing the existing TypeScript logic. We’re looking for someone who ships features to production independently and is ready to grow into mobile. What you’ll do * Build features in Next.js 14 (App Router) + React 18 + TypeScript — frontend and API routes * Integrate the AI * Work with Firebase / Firestore: data modeling, client + Admin SDK, state sync * Conversion funnels and upsells: onboarding, paywall, A/B logic * Push notifications and cron-based nudge flows * Mobile (next phase): React Native + Expo — bringing the product to iOS/Android, reusing shared logic, types, and the API client * Tests (Vitest, Testing Library, Playwright) and code reviews; deploy on Vercel
Requirements (must-have) * 2+ years of commercial web experience * Strong TypeScript, React, Next.js (App Router preferred) * REST/serverless APIs; solid grasp of client-server flow and auth * Any NoSQL/BaaS datastore (Firebase/Firestore a big plus) * Tests, code review, monorepo work, Git
Nice-to-have * Commercial React Native + Expo experience, App Store / Google Play publishing (EAS, certificates, builds) * Mobile push (FCM / APNs), native permissions, deep links, React Native Firebase * LLM/AI API integration * Firebase Admin SDK, security rules, Vercel/EAS pipelines * Early-stage / MVP experience — comfortable with ambiguity
Hiring process * Screening (20–30 min) — experience, expectations, format * Technical interview * Final — team, product context, offer
