Popstock Educational Services

Compensation

Full Description

Title: Volunteer Kotlin Android Developer (Short-Term) Location: Remote | Type: Volunteer | Duration: 4–6 weeks | Time: ~5–10 hrs/week About PopStock PopStock is a hybrid nonprofit 501(c)3 that makes financial literacy engaging for teens via a simulated artist stock market and an in-app assistant (Lexi). There’s no real money or crypto—students use PopStock Dollars to learn core concepts through play. The Impact Your work helps us move a working Android app to a polished, school-pilot-ready build. You’ll unblock classroom pilots and a donations push. You’ll work on (pick 3–5 based on your strengths): • Fixing login/session edge cases (Firebase Auth), improving error and empty states • Refactoring network/data layers (Retrofit, OkHttp, Room/Datastore) with clear domain models • UI polish in Jetpack Compose (lists, cards, state hoisting, Navigation) • Push notifications & in-app events (FCM + Firebase Analytics) • Offline-first reads & retry queues for flaky networks • Crashlytics/perf profiling; ANR/crash reductions • Test coverage (JUnit/MockK), lint/ktlint, and simple CI (GitHub Actions) • Accessibility: content labels, focus order, dynamic type Our stack • Kotlin, Android Studio, Jetpack Compose, Navigation, ViewModel, Coroutines/Flow • Retrofit/OkHttp, Room/Datastore, Firebase (Auth, Firestore, Messaging, Analytics, Crashlytics) • GitHub, Actions CI, feature branches + PR reviews • (Nice) GCP Cloud Run/Functions for APIs What you’ll bring • Shipped 1–2 Android apps or major features in Kotlin • Solid MVVM, Compose state management, and API/data handling • Pragmatic debugging; can turn a vague bug report into a reproducible case • Clear, asynchronous communication in a small team Nice-to-haves • Modularization, DI (Hilt/Koin), or Paging 3 • Feature flags (Firebase Remote Config) • Play Console experience (internal testing tracks) • Ed-tech or youth-facing product experience Time & Format • Volunteer (unpaid) | 4–6 weeks | ~5–10 hrs/week • Async + one short weekly stand-up (30 min) What you’ll get • Real product impact used in school pilots • Strong reference/LoR, LinkedIn endorsement, and portfolio credit • Mentorship from an experienced team building an ed-tech platform