Lead Unity SDK Engineer

Lead Unity SDK Engineer
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 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, SDK
What you'll do
Own and operate the entire Unity product surface, with full architectural autonomy and per-platform customisation
Build and manage open source publishing for LoopMe's Unity packages, applying licensing best practices
Establish and run CI/CD pipelines for the Unity product surface
Drive parity between native iOS and Android platforms through proactive cross-team collaboration
Build generic, reusable tooling that Unity packages across the SDK portfolio can share
Develop and maintain LoopMe's Unity validator app
Manage Unity license administration across the SDK organisation
Partner with QE on cross-platform testing and support integration partners with clear SDK documentation
What you'll bring
Essential:
Experience across cross-platform mobile and SDK development — iOS, Android, and Unity — including dependency resolution and wrapping native code and binaries inside Unity
Strong architectural background in modular Unity SDK design: dependency injection, bridging native iOS/Android SDKs into Unity through C/C++, and building Unity Editor tooling
Proficiency 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 Manager
Working knowledge of privacy and consent frameworks used in ad tech — GDPR, CCPA, TCF, GPP, COPPA, CMPs, and App Tracking Transparency
Nice to have:
Familiarity with ad tech industry practices and client-server architecture patterns
Experience with CI/CD and build tooling such as GitHub Actions, Fastlane, Gradle, or Bazel
Comfort using agentic coding assistants, such as Claude Code, as part of a development workflow
Experience with mobile test automation tools such as Maestro, BrowserStack, or TestRail
What we offer
Remote working
· Self-managed vacation (no maximum)
· 1 month work-from-anywhere
· Healthcare
· 401k
· Summer Fridays
· LoopMe Gives Back
· Learning & development support
To apply
LoopMe does not accept speculative agency submissions. To apply, please use the button below.

Work arrangement
Yes