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

Life360

5d • $118,500 - $216,500 • Remote

About The Position

Life360 is hiring a senior iOS-focused engineer for its On App Ads Engineering team. The team owns the advertising layer in the Life360 app, including its in-house SDK, header-bidding and mediation integrations, ad quality, privacy and consent flows, testing, and monitoring. Its systems serve more than 300 million ad requests per day and support more than 10 demand partners. The role helps expand ad formats, placements, and capabilities while protecting the experience and privacy of members who rely on Life360 for family safety. Most work is in Swift on iOS, with contributions to Android, ad-server configuration, or backend systems when needed.

The successful candidate will own key parts of the iOS ads stack, deliver ad formats or demand integrations end to end, improve ad quality or performance, and develop AI-native workflows that can be adopted beyond the team. The role works with product, ad operations, data science, privacy, and third-party SDK partners, and contributes to architecture, code reviews, technical standards, mentoring, on-call coverage, and incident response. The team uses AI coding tools as a professional standard and expects sound judgment, ownership of AI-generated code, knowledge sharing, and ongoing learning.

Life360 is a remote-first company. Positions can generally be performed remotely within the US and Canada unless otherwise specified. The listed US salary range is $118,500–$216,500 USD; the Canada range is $171,500–$201,000 CAD. Total compensation includes RSUs and a benefits package. Canadian positions use the title “Developer” in place of “Engineer.”

Requirements

• At least 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 large language models.
• Strong proficiency in Swift, SwiftUI, and UIKit, and deep familiarity with Xcode, Swift Concurrency, and Combine.
• Experience with iOS architecture patterns such as MVVM, coordinators, dependency injection, and modularization with SPM or CocoaPods in a large, multi-team codebase.
• Experience integrating and debugging third-party SDKs in production, including version upgrades, closed-source binary behavior, and effects on app size and performance.
• Grounding in iOS performance, memory, and crash diagnostics using Instruments, MetricKit, Crashlytics, or equivalent tools.
• Experience with iOS CI/CD tools such as 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.
• Ability to structure problems precisely, learn quickly, explore work beyond one's immediate area, and try new approaches.
• Clear communication and ability to collaborate across teams and with external partners while valuing diverse perspectives.
• Ownership of work from design through production and beyond.
• Ability to explain technical tradeoffs and articulate ideas effectively.
• Professional use of AI coding assistants for substantive analysis, coding, refactoring, testing, codebase navigation, and documentation; accountability for reviewing and owning shipped AI-generated code.

Nice To Haves

• Hands-on ad tech experience with OpenRTB, Prebid Mobile, Google Mobile Ads/GAM, AdMob, or mediation platforms such as AppLovin MAX or ironSource/Unity LevelPlay.
• Experience with iOS privacy and attribution, including ATT, SKAdNetwork/AdAttributionKit, Privacy Manifests, and consent management platforms such as Google UMP or TCF/GPP.
• Experience building or maintaining an SDK or framework consumed by other teams.
• Familiarity with ad quality tooling, creative rendering with WKWebView or MRAID, and diagnosing fill or latency issues.
• Experience with an experimentation platform such as Statsig, LaunchDarkly, Optimizely, or similar.
• Android/Kotlin experience, or willingness to contribute cross-platform.

Responsibilities

• Design, build, and maintain the iOS ads layer, including the in-house ads SDK, demand partner and header-bidding integrations, and mediation.
• Introduce ad formats, placements, and capabilities that grow revenue while protecting startup time, scroll performance, and the member experience.
• Own iOS privacy and consent behavior, including ATT, IDFA handling, SKAdNetwork/AdAttributionKit, and TCF/GPP consent frameworks.
• Protect ad quality by detecting and blocking problematic creatives, diagnosing rendering and fill issues, and coordinating with ad operations to resolve problems.
• Instrument ad requests, impressions, clicks, and revenue signals accurately for trustworthy revenue reporting and A/B test results.
• Run experiments on ad configuration, including floors, refresh, placements, and partner mix, and use the results to inform decisions.
• Use Claude Code and other AI tools to orchestrate agents for specifications, Swift code and test generation, verification, and review.
• Partner with product, ad operations, data science, and third-party SDK vendor engineering teams.
• Contribute to architectural decisions, code reviews, and continuous improvement of the iOS codebase.
• Participate in on-call rotations and incident response for ads and mobile releases.
• Mentor teammates and help establish technical standards.
• Share effective AI practices, automate reusable prompting strategies, and help teammates adopt AI workflows.

Benefits

• Medical, dental, vision, life, and disability insurance plans; US employee plans are 100% paid, and Canadian employees receive life and disability coverage plus supplemental medical and dental plans.
• 401(k) with company matching in the US; RRSP with DPSP plan in Canada.
• Paid parental leave.
• Mental Wellness Program and Employee Assistance Program (EAP).
• Flexible PTO, companywide holidays, and summer and winter shutdowns.
• Learning and Development programs.
• Equipment, tools, and reimbursement support for a productive remote environment.
• Free Life360 Platinum Membership and Tile trackers.
• Equity compensation in the form of Restricted Stock Units (RSUs).

What This Job Offers

• Job Type: Full-time
• Career Level: Senior