Senior Software Engineer II, Mobile - On App Ads (AI Native)

The role

You will design, build, and maintain the iOS ads layer, including the in-house ads SDK and mediation integrations. You will also introduce new ad formats and manage privacy and consent flows on iOS.

What you will do

• Design, build, and maintain the iOS ads layer
• Introduce new ad formats, placements, and capabilities
• Own privacy and consent on iOS
• Protect ad quality by detecting and blocking bad creatives
• Instrument ad events accurately
• Run A/B tests on ads configuration
• Work with AI (Claude Code) as a first-class collaborator
• Partner with product, ad operations, data science, and partner engineering teams
• Contribute to architectural decisions and code reviews
• Take part in the on-call rotation and incident response

Required qualifications

• 6+ years of iOS engineering experience shipping production apps at consumer scale
• At least 1 year of hands-on experience prompting, evaluating, and building with LLMs
• Strong proficiency in Swift, SwiftUI, and UIKit
• Deep familiarity with the modern iOS toolchain (Xcode, Swift Concurrency, Combine)
• Experience with iOS architecture patterns (MVVM, coordinators, dependency injection, modularization with SPM or CocoaPods)
• Experience integrating and debugging third-party SDKs in production
• Solid grounding in iOS performance, memory, and crash diagnostics (Instruments, MetricKit, Crashlytics or equivalent)
• Experience with CI/CD for iOS (Fastlane, Xcode Cloud, Buildkite, GitHub Actions, or similar)
• Hands-on experience with agentic workflows, prompt engineering, context-window management, and MCP/function calling
• Bachelor's degree in a technical field, or equivalent experience

Nice to have

• Hands-on ad tech experience (OpenRTB, Prebid Mobile, Google Mobile Ads/GAM, AdMob, or mediation platforms)
• Experience with iOS privacy and attribution (ATT, SKAdNetwork/AdAttributionKit, Privacy Manifests, and consent management platforms)
• Experience building or maintaining an SDK or framework that other teams consume
• Familiarity with ad quality tooling, creative rendering (WKWebView, MRAID), and diagnosing fill or latency issues
• Experience with an experimentation platform (Statsig, LaunchDarkly, Optimizely, or similar)
• Android/Kotlin experience

Benefits

• Medical, dental, vision, life and disability insurance plans
• 401(k) plan with company matching program in the US
• RRSP with DPSP plan for Canadian employees
• Paid parental leave
• Mental Wellness Program & Employee Assistance Program (EAP)
• Flexible PTO
• Companywide holidays including summer and winter shutdowns
• Learning & Development programs
• Equipment, tools, and reimbursement support for a remote environment
• Free Life360 Platinum Membership and Tile trackers

Before you apply

• AI tool usage during interviews varies by role
• You may be asked to demonstrate proficiency with AI tools, discuss how you leverage AI, or complete interview exercises without AI assistance
• Undisclosed use of AI not previously discussed or approved by your Recruiter may impact your candidacy

About the company

Life360 is a Remote First company with more than 500 remote-first employees. Its mission is to keep people close to the ones they love through mobile apps, Tile tracking devices, and Pet GPS trackers.