Senior Paid Social Growth Leader (Meta-focused)

Brex; Seattle (WA); Hybrid; USD 131,000 - 164,000; Full time

Job summary

Brex is seeking a deeply analytical, growth-rooted Senior Growth Marketing Manager to own, scale, and optimize our Paid Social engine, with Meta as the core growth driver and a clear mandate to test and scale emerging channels. In this role, you will be accountable for down-funnel pipeline, efficient CAC, and customer acquisition.

You won't just optimize campaigns; you will engineer signal architecture, build scalable audience models, and establish a high-velocity creative testing engine.

Qualifications

• 5+ years of growth or performance marketing with Meta as a core channel.
• Experience owning a paid social channel end-to-end, including strategy, budgets, forecasting, campaign architecture, optimization, and performance reporting.
• Analytical: strong understanding of unit economics (CAC, LTV, payback periods) and connecting metrics to business impact.
• Experience running full-funnel paid social programs from awareness to conversion and pipeline.
• Strong expertise in audience strategy and platform automation (first-party audiences, lookalikes, retargeting).
• Knowledge of conversion signals and measurement (Meta CAPI, server-side tracking, attribution).
• Experience building structured experimentation roadmaps across creative, audiences, bidding, and optimization events.
• Strong creative judgment and ability to translate performance data into briefs.
• Excellent communicator who can influence cross-functional partners.

Responsibilities

• Own Meta + emerging channel budgets, CAC efficiency, conversion, and downstream pipeline across self-serve and sales-led motions.
• Improve conversion signals and measurement, enabling platforms to optimize toward higher-quality customers.
• Build a continuous, hypothesis-driven testing framework across audiences, bidding, events, landing pages, and creative concepts.

Skills

Growth marketing

Meta ads management

Full-funnel paid social

Audience strategy

Analytics & measurement

Job description

Brex is seeking a deeply analytical, growth-rooted Senior Growth Marketing Manager to own, scale, and optimize our Paid Social engine, with Meta as the core growth driver and a clear mandate to test and scale emerging channels. In this role, you will be accountable for down-funnel pipeline, efficient CAC, and customer acquisition.

You won't just optimize campaigns; you will engineer signal architecture, build scalable audience models, and establish a high-velocity creative testing engine.