Senior SDET (Contractor) - Mobile Test Automation

Software Development Engineer in Test, SDET (B2B) | XCUITest, JUnit, Jetpack Compose UI Test, BDD, GitHub Actions | Scaling Native Mobile Test Automation | €330/day | Remote | 6-Month

We’re hiring a Senior SDET (contractor) to join an experienced mobile engineering organisation working on a large-scale, well-established native mobile product within a mature, product-led company.

This role is focused on strengthening and scaling automated testing across native iOS and Android applications, helping improve reliability, release confidence, and developer velocity across multiple mobile squads.

You’ll work closely with iOS and Android engineers to design, build, and maintain robust automated test frameworks that support fast, safe delivery in a high-traffic production environment.

You’ll be joining a calm, pragmatic, and quality-focused engineering culture where testing is treated as a first-class engineering concern.

This is a 6-month initial contract, well-suited to senior SDETs or Mobile Automation Engineers who enjoy working hands-on in real-world systems and improving quality at scale.

The Role – Software Development Engineer in Test, SDET (B2B) | XCUITest, JUnit, Jetpack Compose UI Test, BDD, GitHub Actions | Scaling Native Mobile Test Automation | €330/day | Remote | 6-Month

This is a hands-on senior SDET role with genuine ownership and influence.

You’ll be expected to:

• Help design and evolve automated test strategies for native iOS and Android applications
• Build and maintain UI and integration tests using XCUITest and JUnit / Jetpack Compose UI Test
• Work closely with iOS and Android engineers to embed testing into day-to-day development
• Create and maintain Given / When / Then style DSLs and BDD-style test frameworks

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• Implement JSON-based mocking and stubbing to enable fast, deterministic tests
• Integrate and optimise test execution within CI/CD pipelines (GitHub Actions)
• Improve test reliability, reduce flakiness, and shorten feedback loops
• Advocate for quality-first engineering practices across mobile teams

This role suits engineers who are pragmatic, collaborative, and passionate about building test systems that genuinely help teams ship with confidence.

Technical Requirements – Software Development Engineer in Test, SDET (B2B) | XCUITest, JUnit, Jetpack Compose UI Test, BDD, GitHub Actions | Scaling Native Mobile Test Automation | €330/day | Remote | 6-Month

Strong, recent experience with:

• Mobile test automation for native iOS and/or Android applications
• XCUITest for iOS UI automation
• JUnit and Android UI testing (including Jetpack Compose UI Test)
• Designing test frameworks and reusable test utilities
• Given / When / Then, BDD, or DSL-style test approaches
• Mocking and stubbing using JSON fixtures or similar techniques
• CI/CD pipelines and automated test execution (GitHub Actions or similar)
• Collaborating closely with software engineers in cross-functional teams

Nice to Have

• Experience working on large-scale consumer or eCommerce mobile applications
• Knowledge of network mocking tools and service virtualisation
• Experience improving flaky test suites and test performance
• Understanding of mobile architecture patterns and how they impact testability

Why This Contract Stands Out – Software Development Engineer in Test, SDET (B2B) | XCUITest, JUnit, Jetpack Compose UI Test, BDD, GitHub Actions | Scaling Native Mobile Test Automation | €330/day | Remote | 6-Month

• €330 per day
• Fully remote (EU-based contractors welcome)
• B2B engagement
• Opportunity to influence mobile quality at scale
• Work alongside strong native iOS and Android teams
• Longer-term, well-scoped contract with meaningful impact
• Pragmatic, product-led engineering culture

This is not a checkbox QA role - it’s a senior SDET contract for engineers who want to build high-quality mobile automation frameworks, partner closely with developers, and materially improve how a large mobile product is delivered.

Please apply here and we will get back to you if it’s a good match for the client 🙂