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SunCore Digital

Mobile Test Engineer

Scottsdale, AZ, United States
Bellevue, WA, United States

$135,000 to $155,000 USD / year

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Job details

Pay: $135,000 to $155,000 USD / year
Posting language: English

Original job description

About the Role SunCore Digital is seeking a Mobile QA Engineer, Flutter to own hands-on testing of our Flutter-based mobile applications across supported Android and iOS devices. This role will focus on mobile functionality, device compatibility, application lifecycle behavior, API integration, synchronization, connectivity, and mobile regression testing. You will work under the direction of the Senior QA Engineer / Quality Lead and collaborate closely with mobile developers, backend engineers, the Web and Backend QA Engineer, UI/UX, and platform engineering.

Responsibilities

Flutter mobile application testing

Test Flutter applications across supported Android and iOS versions.
Validate functionality on physical devices, emulators, simulators, and device-cloud services where appropriate.
Perform functional, exploratory, regression, integration, and end-to-end mobile testing.
Test navigation, forms, notifications, permissions, authentication, data display, and user workflows.
Validate behavior across different screen sizes, orientations, resolutions, and device capabilities.
Identify device-specific and operating-system-specific defects.
Verify release and debug builds where appropriate.

Mobile lifecycle and operating-system behavior

Test application startup, shutdown, backgrounding, resuming, and termination.
Validate behavior after device restart, application update, or application reinstall.
Test session expiration and token refresh.
Validate deep links, push notifications, and operating-system permissions where used.
Test storage access, camera access, location access, file handling, or other device features where applicable.
Confirm that sensitive information is not exposed through logs, notifications, screenshots, or local storage.
Validate battery, memory, and general responsiveness concerns during normal internal use. Connectivity and synchronization
Test mobile behavior under strong, weak, intermittent, and unavailable network conditions.
Validate retries, timeouts, duplicate submissions, and interrupted workflows.
Test synchronization between the mobile application and backend services.
Confirm that delayed or repeated requests do not create duplicate or inconsistent records.
Validate conflict handling when the same data is changed from multiple locations.
Test recovery after network restoration.
Confirm that errors are visible and actionable rather than silently ignored. API and backend compatibility
Validate mobile API requests and responses.
Confirm compatibility when APIs or backend behavior change.
Work with mobile and backend developers to identify contract mismatches.
Test authentication, authorization, data isolation, and permission behavior from the mobile client.
Confirm that client-side restrictions are also enforced by backend services.
Coordinate with the Web and Backend QA Engineer on shared services and data.
Verify that web and mobile display consistent information when they use the same source data. Mobile regression and release validation
Create and maintain the mobile regression suite.
Maintain a supported-device and operating-system coverage matrix.
Perform release-candidate smoke and regression testing.
Validate installation, update, configuration, and launch behavior.
Test critical mobile workflows before internal distribution or public release.
Record which devices, operating systems, and application versions were tested.
Report known compatibility gaps and untested combinations.
Support app-store readiness and release validation when required. Mobile automation
Evaluate and implement appropriate Flutter and mobile automation.
Develop and maintain selected high-value mobile automated tests.
Use Flutter testing capabilities and tools such as Appium, Patrol, Maestro, or equivalent where appropriate.
Work with mobile developers on widget, integration, and end-to-end testing.
Integrate mobile tests into CI/CD where practical and reliable.
Investigate mobile automation failures and identify flaky tests.
Recommend which mobile workflows should remain manual due to device or operating-system complexity. The Mobile QA Engineer is not expected to automate every device and workflow. Defect management
Report mobile defects with: ○ Device model ○ Operating-system version ○ Application version ○ Network condition ○ Reproduction steps ○ Expected behavior ○ Actual behavior ○ Screenshots, recordings, or logs where appropriate
Distinguish application defects from device, operating-system, environment, or backend failures.
Validate mobile fixes and related regressions.
Escalate crashes, data loss, permission failures, security concerns, and blocked critical workflows.
Monitor recurring mobile defect patterns.

Collaboration

Review mobile requirements and acceptance criteria before implementation.
Work directly with mobile developers to improve testability and diagnostics.
Coordinate with the Web and Backend QA Engineer on shared workflows and APIs.
Work with UI/UX on mobile interaction, responsiveness, accessibility, and design consistency.
Work with platform and DevOps engineers on mobile build and test execution.
Communicate quality status, device coverage, and blockers to the Senior QA. Responsibility Boundaries The Mobile QA Engineer owns day-to-day mobile testing and mobile release regression.

The role does not solely own:

Backend/API correctness
Unit and widget tests written by mobile developers
All mobile automation
Performance and load testing of backend services
Security assessment
App-store product decisions
Final release approval
Web application testing
Defining business requirements Mobile developers remain responsible for testing their own code, including unit, widget, and integration tests. The Senior QA owns overall quality strategy and release-readiness assessment. Required Qualifications
At least three years of professional mobile QA or software-testing experience.
Hands-on experience testing Flutter applications.
Experience testing both Android and iOS applications.
Strong knowledge of mobile functional, exploratory, regression, and integration testing.
Experience testing across multiple devices, operating-system versions, and screen sizes.
Experience testing mobile API integration and data synchronization.
Experience testing under weak or intermittent network conditions.
Experience documenting device-specific and reproducible defects.
Familiarity with mobile logs, debugging tools, and network inspection.
Experience maintaining a mobile device and operating-system coverage matrix.
Strong written communication and documentation.
Ability to work closely with mobile and backend engineers. Preferred Qualifications
Experience with Flutter integration testing.
Experience with Appium, Patrol, Maestro, or comparable mobile automation tools.
Experience with Firebase Test Lab, BrowserStack, Sauce Labs, or another device-cloud platform.
Familiarity with Android Studio and Xcode diagnostic tools.
Experience testing push notifications, deep links, permissions, background processing, or secure storage.
Experience testing offline or field-use mobile applications.
Experience testing mobile applications involving financial, operational, equipment, or telemetry data.
Familiarity with mobile CI/CD and release pipelines.
Familiarity with app-store release validation.
Experience in a startup or small engineering organization. What Success Looks Like
Critical mobile workflows are consistently tested across supported devices.
Mobile regression coverage is documented and repeatable.
Device and operating-system compatibility risks are visible.
API and synchronization problems are identified before release.
Network interruption and lifecycle scenarios are tested consistently.
Mobile defects include sufficient device and environment detail for developers to reproduce them.
High-value mobile regression tests are automated where practical.
Mobile release quality is assessed without duplicating web and backend QA work unnecessarily.

--- Bonus Points

Experience testing financial, transactional, or digital-asset mobile applications.
Familiarity with KYC, AML, identity-verification, or other sensitive mobile workflows.
Experience with device-cloud testing platforms or physical-device labs.
Experience testing AI-assisted features, mobile analytics, or behavioral analytics.
Experience working in a remote, asynchronous startup environment. --- Compensation & Benefits
Base Compensation: Competitive, based on experience, portfolio strength, and geographic location.
Milestone Bonuses: 10% milestone bonus awarded to every team member assisting with the MVP build-out.
Annual Performance Bonus: Represents a significant percentage of total compensation.
Benefits for Domestic Hires: Health, dental, and vision plans.
Annual Paid Offsite: Team retreats in Caribbean, Hawaii, ski destinations, and other exciting locations. --- Why Join SunCore Digital?
High-impact role in a rapidly scaling digital company.
Fully remote team with async flexibility.
Direct collaboration with executive leadership and best-in-class marketing/design partners.
Opportunity to shape QA processes and mentor junior team members.
Competitive compensation with performance upside.

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