Note: The job is a remote job and is open to candidates in USA. Life360 is hiring a Senior Software Engineer II for its Mobile On App Ads team. The role builds and scales the iOS advertising stack, including the ads SDK, partner integrations, privacy and consent flows, and ad formats, while using AI-native workflows to improve development and protect the member experience.
Responsibilities
- Design, build, and maintain the iOS ads layer: our in-house ads SDK, demand partner and header-bidding integrations (e.g., Prebid, Google Mobile Ads/GAM), and mediation
- Introduce new ad formats, placements, and capabilities that grow revenue while protecting startup time, scroll performance, and the member experience
- Own privacy and consent on iOS: ATT, IDFA handling, SKAdNetwork/AdAttributionKit, and consent frameworks (TCF/GPP). Make sure ads behave correctly in every region and under every user setting
- Protect ad quality. Detect and block bad creatives, diagnose rendering and fill issues, and partner with ad ops to resolve problems fast
- Instrument ad events (requests, impressions, clicks, and revenue signals) accurately, so the revenue and A/B test results the business relies on can be trusted
- Run A/B tests on ads configuration, such as floors, refresh, placements, and partner mix, and turn the results into the next decision
- Work with AI (Claude Code) as a first-class collaborator. Your main workflow is orchestrating agents to write specs, generate Swift code and tests, verify results, and review changes
- Partner closely with product, ad operations, data science, and partner engineering teams at third-party SDK vendors
- Contribute to architectural decisions, code reviews, and a culture of craft and continuous improvement on the iOS codebase
- Take part in the on-call rotation and incident response for ads and mobile releases
- Mentor teammates and help set technical standards for the team
Skills
- 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, plus 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) in a large, multi-team codebase
- Experience integrating and debugging third-party SDKs in production, including version upgrades, behavior inside closed-source binaries, and their effect on app size and performance
- 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
- Growth mindset: You structure problems precisely, learn quickly, take interest outside "your lane," and are always happy to try something new
- Collaborative approach: You communicate clearly, work well across teams and with external partners, and value diverse perspectives
- Ownership mentality: You take responsibility for your work from design through production and beyond
- Thoughtful communication: You can explain technical tradeoffs and articulate ideas effectively
- You use AI coding assistants (we support Claude Code, Cursor, and GitHub Copilot) for real, substantive tasks: analysis, coding, refactoring, testing, navigating codebases, and documentation. Not just research or autocomplete
- AI-generated code gets the same review you'd give any PR. You are accountable for everything you ship
- We expect senior engineers who use AI well to operate with meaningful leverage — doing more with the same time, taking on problems that would otherwise require a larger team
- You share what works. You automate prompting strategies that others can build on and help teammates earlier in their AI workflow adoption get up to speed
- The tooling is changing fast. You stay current and bring recommendations to the team when something would meaningfully improve how we work
- Hands-on ad tech experience: OpenRTB, Prebid Mobile, Google Mobile Ads/GAM, AdMob, or mediation platforms (e.g., AppLovin MAX, ironSource/Unity LevelPlay)
- Experience with iOS privacy and attribution: ATT, SKAdNetwork/AdAttributionKit, Privacy Manifests, and consent management platforms (Google UMP, TCF/GPP)
- 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, or a willingness to contribute cross-platform
Benefits
- Medical, dental, vision, life and disability insurance plans (100% paid for US employees).
- Life and disability as well as supplemental plans for medical and dental for Canadian employees.
- 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) for mental well-being.
- Flexible PTO, companywide holidays throughout the year plus summer and winter shutdowns.
- Learning & Development programs.
- Equipment, tools, and reimbursement support for a productive remote environment.
- Free Life360 Platinum Membership and Tile trackers.
- Remote work is the primary experience for all employees; positions can be performed remotely within the US and Canada unless otherwise specified.
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