Job Description

About LoopMe

LoopMe is an AI company solving one of advertising's hardest problems: making brand advertising actually measurable — and making it perform. Our platform runs patented machine learning models across billions of consumer signals in real time, optimising campaigns toward outcomes like purchase intent, brand lift, and foot traffic rather than proxy metrics like clicks. The result is 2–5x better performance than industry benchmarks, at scale.

We operate a high-load programmatic infrastructure — processing millions of ad requests per second with sub-200ms response times globally. This isn't a layer on top of someone else's stack; it's built from the ground up, in-house, by the team you'd be joining. Founded in 2012 and headquartered in London, we now have 400+ people across 19 cities and have sustained 40% revenue CAGR since 2018. The engineering problems here are real, the ownership is genuine, and the scale is significant.

The opportunity

You'll own test automation for LoopMe's Android and iOS SDKs, building and maintaining the suites that determine how fast and confidently we ship. Working alongside our existing automation engineer, you'll integrate deeply with the CI/CD pipeline using GitHub Actions, BrowserStack, and Maestro, and extend coverage as new SDK projects come into scope. This role sits within the Mobile SDK engineering team.

What you'll do

• Build and maintain automated test suites for Android and iOS SDKs using JavaScript, Rust, and Bash/Shell scripting
• Develop mobile UI automation using Maestro across Android and iOS SDK projects
• Integrate automated tests into GitHub Actions CI/CD workflows for nightly smoke, regression, and Adapter Certification runs
• Own test execution and monitoring via BrowserStack App Automate, debugging environment-specific failures across devices and infrastructure
• Manage and publish test results through Allure Reports, surfacing findings to developers via JIRA and Slack
• Drive down nightly test run time by parallelising suites across multiple GitHub Actions runners
• Manage test builds via Firebase App Distribution for Android and iOS
• Leverage AI tools, including Claude, to accelerate test development and improve coverage and resilience

What you'll bring

Essential:

• 4+ years in automation engineering, or 2+ years as an SDET or developer
• Strong JavaScript skills applied to test automation
• Proficiency in Bash and Shell scripting, and GitHub Actions for CI/CD integration
• Experience with BrowserStack or a comparable real-device cloud platform
• Proficiency with Maestro for mobile UI automation, Allure Reports, and JIRA

Nice to have:

• TypeScript familiarity
• TestRail or an equivalent test management system
• Charles Proxy for network traffic analysis
• Experience with AI-assisted test generation or self-healing frameworks
• Rust programming experience
• Adtech or programmatic advertising domain knowledge

What we offer

• Flexible working schedule
• 1 month of work-from-anywhere
• Annual performance bonus
• English classes
• LoopMe Gives Back
• Learning & development support