Mobile Team Lead

We're hiring a Mobile Team Lead to own the AppHarbr SDK, GeoEdge's mobile division that gives publishers real-time control over ad quality across iOS and Android.
About AppHarbr
AppHarbr is GeoEdge's mobile division, a lightweight SDK that integrates directly into apps and games, giving publishers real-time control over ad quality. It proactively blocks disruptive, intrusive, and malicious ads before they ever reach users. Trusted by industry leaders, AppHarbr runs at scale across some of the world's most widely used mobile apps, sitting at the intersection of mobile performance and ad security.
The role
We are looking for an experienced Mobile Team Lead to take full ownership of the AppHarbr SDK across iOS and Android. This is a hands-on technical leadership role, you will spend the majority of your time making architectural decisions, setting technical direction, and driving cross-functional execution across a team that includes offshore contributors, while writing and reviewing code. This is a team that moves with the tools available to it, AI-assisted development is part of how we work, not a future aspiration.
The SDK runs inside production apps across millions of devices, operating in real time alongside a continuously evolving ecosystem of third-party mediation layers and ad networks. Reliability, backward compatibility, and runtime performance are baseline expectations, not aspirational goals.
Responsibilities
Technical

Architect and develop high-performance, multi-threaded SDK code across iOS and Android
Drive platform technical decisions, performance optimizations, and deep research into OS internals and third-party SDK behavior
Own SDK stability across the full compatibility matrix, OS versions, devices, and mediation integrations
Lead complex debugging efforts, reverse-engineer third-party integrations, and resolve integration issues for internal and external stakeholders
Define and enforce best practices in testing, code quality, and CI/CD workflows
Handle billions of impressions across millions of devices every day, maintaining a robust and scalable system at significant traffic scale
Leverage AI-assisted development tools to accelerate code generation, debugging, and SDK analysis, and set the standard for how the team adopts them effectively

Leadership

Lead, mentor, and grow a cross-platform mobile team including offshore contributors
Own the AppHarbr domain end-to-end, translate product and business goals into technical execution
Act as the primary technical point of contact across Product, Backend, QA, Customer Success, and external partners
Conduct code reviews and provide ongoing technical guidance to raise the bar across the team

Requirements

Proven hands-on experience shipping production code on both Android and iOS
5+ years of professional mobile development, with 2+ years in a formal Team Lead or engineering management role, with proven people management experience
Deep understanding of OS internals, memory management, and multi-threaded architectures on both platforms
Strong ownership mindset, able to operate independently and drive initiatives from inception to production
Excellent debugging skills, with a modern toolset that includes AI where it adds real value

Strong advantages

Experience building or leading teams building mobile SDKs
Experience managing remote or offshore engineering teams
Background in adtech, mobile monetization, or ad quality
Familiarity with Unity integrations and ad mediation frameworks
Broad product and business perspective, able to coordinate across multiple stakeholders inside and outside the organization

Working at GeoEdge
GeoEdge is the global leader in ad security and quality, trusted by hundreds of the world's top publishers, ad platforms, and app developers. We are a focused team that cares about craft and impact. You will work on a product running at real scale, with the autonomy to go deep technically and the support to lead with confidence.