We’re looking for a mobile developer to build an offline-first app for field data collection in places without reliable internet: nature reserves, farms, remote areas.
What you’ll do
Build a mobile app with an offline-first architecture (local storage on SQLite and/or WatermelonDB with custom conflict resolution logic)
Design and implement the offline sync mechanism (queues, retries, partial conflicts)
Integrate camera and GPS for capturing field observations (photos, geotags, collection metadata)
Ensure data integrity: link every record to its source, timestamp, location, and collection method
Optimize for weak/no connectivity and limited battery conditions
What matters to us
Experience building apps where offline is the primary scenario, not a fallback
Hands-on experience with SQLite and/or WatermelonDB
Understanding of conflict resolution approaches (last-write-wins, CRDT, merge strategies, etc.) and ability to implement custom logic for the use case
Experience working with camera and geolocation on mobile platforms
Understanding of field-condition constraints: unstable connectivity, power efficiency, reliable data persistence
Nice to have
Familiarity with field data collection tools: ODK, ArcGIS Field Maps, Fulcrum, CommCare
Experience with geospatial/GIS tasks
Experience in projects related to ecology, sustainability, or impact investing
IMPORTANT
Resumes (NOT COVER LETTER) must clearly list all technologies used (language/framework, local database, camera/GPS libraries, etc.). Resumes without a specific tech stack listed will not be considered.
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