Senior Software Engineer – Mobile, Flutter, KMP

Afero

Senior Software Engineer developing mobile applications across iOS and Android for Afero's Hubspace product line. Building intuitive experiences and shaping app architecture used by millions of customers.

Posted 5/30/2026full-timeLos Altos • California • 🇺🇸 United StatesSenior💰 $205,000 - $240,000 per yearWebsite

Tech Stack

Tools & technologies

AndroidDartFlutterGraphQLiOSIoTKotlinReduxSwift

About the role

Key responsibilities & impact

Build and maintain the Flutter application across iOS and Android, including native platform channel integrations in Swift and Kotlin
Design and implement shared business logic using Kotlin Multiplatform, reducing duplication between platforms
Integrate and evolve GraphQL APIs, working closely with backend teams on schema design and query optimization
Participate in architectural decisions, including the ongoing migration from Redux to ChangeNotifier/Provider
Own features end-to-end: from API contract through UI, including test coverage
Mentor mid-level engineers and contribute to code review culture

Requirements

What you’ll need

8+ years of mobile software engineering experience
Strong Flutter/Dart — you've shipped a production Flutter app and understand its rendering model, state management trade-offs, and platform channel boundaries
Native iOS (Swift), native Android (Kotlin) and you can write platform-specific code when Flutter alone isn't enough
Kotlin Multiplatform; experience building or consuming shared KMP modules
GraphQL; client-side experience with queries, mutations, subscriptions, and caching strategies
Comfort working in an IoT or connected hardware context is a strong plus (BLE, device state synchronization, real-time data)
Collaborative and direct; this team moves fast and expects engineers to push back when something is wrong
This role is a hybrid position; candidates must be able to come into the Los Altos, CA office at least three days per week
Applicants must be authorized to work for any employer in the U.S.

Benefits

Comp & perks

Competitive benefits and equity compensation not included in the salary range

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

FlutterDartSwiftKotlinKotlin MultiplatformGraphQLAPI integrationtest coveragestate managementRedux

Soft Skills

mentoringcollaborationcommunicationcode reviewproblem-solving