Level

Senior Full-Stack Mobile Engineer

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4 months ago
Bellevue, WA, USASenior

Base Salary

$98k - $244k/yr

Responsibilities

  • Design, build, ship, and maintain end-to-end mobile features across native iOS and Android clients, backend services, and APIs.
  • Evolve mobile architecture, navigation, state management, modularization, offline behavior, and native versus cross-platform implementation decisions.
  • Design and operate backend services supporting identity, content, synchronization, telemetry, and mobile engagement.
  • Own reliability targets, observability, performance optimization, security practices, incident response, and post-mortems for owned systems.
  • Own mobile release pipelines, staged rollouts, production monitoring, testing strategy, technical debt reduction, and scalability improvements.
  • Collaborate with product, design, web/backend engineering, infrastructure, QA, and developer productivity teams.
  • Mentor mid-level and associate engineers through pairing, code reviews, and technical guidance.

Requirements

  • 5+ years of professional software engineering experience, including 3+ years of production native mobile development on iOS or Android.
  • At least one shipped mobile application at meaningful scale with production telemetry and real users.
  • Working knowledge of the second mobile platform sufficient to read, review, and contribute to its code.
  • Strong backend proficiency in Kotlin or Java on the JVM or TypeScript, with experience designing and operating long-lived backend services.
  • Strong understanding of mobile architecture patterns including MVVM, MVI, Clean Architecture, and modularization.
  • Deep knowledge of mobile concurrency, lifecycle management, memory, battery usage, networking, persistence, offline-first behavior, and accessibility.
  • Solid understanding of HTTP, REST, gRPC, and protobuf.
  • Working knowledge of AWS, Docker, Kubernetes, and CI/CD pipelines; familiarity with Linkerd, ArgoCD, and Terraform is preferred.
  • Knowledge of mobile security fundamentals and experience handling sensitive user data in production.
  • Experience with Git, GitHub Actions, collaborative code review, and unit, integration, UI, and instrumentation testing.
  • Preferred experience includes production development on both iOS and Android, Kotlin Multiplatform, React Native, Flutter, App Store and Play Console processes, privacy and family-friendly policies, OpenTelemetry, SigNoz, Grafana, Sentry, Crashlytics, EdTech or K-12 privacy requirements, FERPA, COPPA, WCAG, Backstage, internal developer platforms, or relevant open-source contributions.

Tech Stack

AWSDockerFlutterGitGitHub ActionsGrafanagRPCiOSJavaJetpack ComposeKotlinKubernetesReact NativeSwiftSwiftUITerraformTypeScript

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201-500 employees
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