Growth Marketing Manager

We are looking for a Marketing Growth Manager to join our Growth team at use.ai, one of Ruby Labs’ fastest-growing AI portfolio companies. This role owns and scales the entire paid user acquisition and creative testing engine, with direct accountability for CPA, conversion volume, and revenue growth. This is a hands-on, execution-heavy role for someone passionate about performance marketing, creative experimentation, and data-driven growth. You will own the full funnel, from creative concept ideation through aggressive campaign scaling, acting as the bridge between creative production and performance marketing. You will work closely with the Lead Ad Creative Producer and serve as the final performance authority before campaigns scale to significant spend. The ideal person for this role thrives in high-autonomy, high-expectation environments and is motivated by shipping fast, testing relentlessly, and scaling what works.