Lead Unity SDK Engineer

Lead Unity SDK EngineerAbout LoopMeLoopMe 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 opportunityYou'll own the entire Unity product surface at LoopMe — the SDK layer that bridges our native iOS and Android products into the Unity ecosystem for game and app developers. You'll have full architectural autonomy over how our Unity packages are designed, tested, and shipped, working closely with our iOS, Android, and QE teams to keep native and Unity experiences in lockstep. This role reports to the VP Engineering, SDKWhat you'll doOwn and operate the entire Unity product surface, with full architectural autonomy and per-platform customisationBuild and manage open source publishing for LoopMe's Unity packages, applying licensing best practicesEstablish and run CI/CD pipelines for the Unity product surfaceDrive parity between native iOS and Android platforms through proactive cross-team collaborationBuild generic, reusable tooling that Unity packages across the SDK portfolio can shareDevelop and maintain LoopMe's Unity validator appManage Unity license administration across the SDK organisationPartner with QE on cross-platform testing and support integration partners with clear SDK documentationWhat you'll bringEssential:Experience across cross-platform mobile and SDK development — iOS, Android, and Unity — including dependency resolution and wrapping native code and binaries inside UnityStrong architectural background in modular Unity SDK design: dependency injection, bridging native iOS/Android SDKs into Unity through C/C++, and building Unity Editor toolingProficiency in C#, Kotlin, Swift, and Objective-C++A track record publishing and maintaining open source software, with working knowledge of licensing and distribution through NPM, NuGet, and Unity Package ManagerWorking knowledge of privacy and consent frameworks used in ad tech — GDPR, CCPA, TCF, GPP, COPPA, CMPs, and App Tracking TransparencyNice to have:Familiarity with ad tech industry practices and client-server architecture patternsExperience with CI/CD and build tooling such as GitHub Actions, Fastlane, Gradle, or BazelComfort using agentic coding assistants, such as Claude Code, as part of a development workflowExperience with mobile test automation tools such as Maestro, BrowserStack, or TestRailWhat we offerRemote working· Self-managed vacation (no maximum) · 1 month work-from-anywhere · Healthcare · 401k · Summer Fridays · LoopMe Gives Back · Learning & development supportTo applyLoopMe does not accept speculative agency submissions. To apply, please use the button below.