Senior Software Development Engineer in Test

B5 Recruiting

. Author and maintain end-to-end automated tests for React Native mobile applications using Detox and Jest .

Posted 10/19/2026contractRemote • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in test automation design and implementation for mobile applications, with strong skills in TypeScript and React Native. Experienced in developing and maintaining automated test suites, integrating them into CI/CD pipelines, and collaborating effectively with cross-functional teams.

Highest-signal resume keywords

Test Automation DesignTypeScript ProgrammingDetox Mobile UI AutomationCI/CD Pipeline IntegrationManual Testing Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Test AutomationTypeScriptJavaScriptDetoxAppiumXCUITestEspressoVisual Regression TestingMobile TestingTest Plans Development

Soft Skills

Analytical SkillsCollaborationMentoringCommunicationEfficiency

Tools & Technologies

BitriseBitbucket PipelinesJiraXrayIOS SimulatorsAndroid EmulatorsExpoEAS Build Tooling

Industry Keywords

Software Development Life CycleAgile DeliveryBluetoothBLEIoT Testing

Tech Stack

Tools & technologies

AndroidiOSIoTJavaScriptJestReactReact NativeSDLCTypeScript

About the role

Key responsibilities & impact

Author and maintain end-to-end automated tests for React Native mobile applications using Detox and Jest
Read and navigate application source code (TypeScript/React) to understand feature behavior and build reliable, well-targeted tests
Develop maintainable, scalable, and readable test suites organized by feature and screen
Build and maintain visual/snapshot regression coverage across iOS and Android platforms and light/dark themes
Validate app behavior against mocked service and device-simulation layers, including Bluetooth/BLE, device registration, and WebSocket flows
Identify and document software defects and link automated tests to Jira/Xray test-case management
Develop and maintain test plans based on documented requirements and designs
Keep automated tests reliable in CI using Bitrise/Bitbucket pipelines, diagnosing and reducing flakiness
Develop mobile test automation best practices and mentor QA members
Generate estimates for automated and manual test work
Prepare and present findings, reports, and metrics
Stay current with testing tools and strategies
Collaborate with Business Analysts, Software Developers, Project Managers, and User Experience Designers

Requirements

What you’ll need

5 years of experience in test automation design, development, and implementation for web and/or mobile applications
Strong programming skills in TypeScript or JavaScript (required); comfort reading React / React Native application code
Hands-on experience authoring native mobile UI automation with Detox, Appium, XCUITest, or Espresso/EarlGrey
5 years of manual testing experience
Experience running mobile tests against iOS simulators and Android emulators, locally and in CI
Experience integrating automated tests into CI/CD pipelines (Bitrise, GitHub Actions, Bitbucket Pipelines, or similar)
Demonstrated analytical skills using various tools and data sources
Demonstrated efficiency working on cross-functional teams of 8 or more, including Project Manager, Business System Analysts, Application Developers, and System Administrators
Demonstrated ability to apply standardized software quality processes
Familiarity with various testing methods and strategies
Familiarity with Software Development Life Cycle (SDLC) processes and Agile delivery
Nice to have: Experience testing connected products / IoT (Bluetooth/BLE, device registration, real-time messaging)
Nice to have: Experience with visual/snapshot regression testing and baseline management
Nice to have: Experience with test-case management tools (Jira/Xray) and reporting automated results back to them
Nice to have: Experience with Expo / EAS build tooling
Nice to have: Knowledge of Accessibility, Security, and Performance testing