Senior Growth Marketing Manager, Paid Social

Why join us

Brex is the intelligent finance platform that enables companies to spend smarter and move faster in more than 200 markets. By combining global corporate cards and banking with intuitive spend management, bill pay, and travel software, Brex enables founders and finance teams to accelerate operations, gain real-time visibility, and control spend effortlessly. Brex’s AI-native automation and world-class service eliminate manual expense and accounting tasks for customers so they can focus on what matters most. Tens of thousands of the world's best companies run on Brex, including DoorDash, Coinbase, Robinhood, Zoom, Plaid, Reddit, and SeatGeek.

Working at Brex allows you to push your limits, challenge the status quo, and collaborate with some of the brightest minds in the industry. We’re committed to building a diverse team and inclusive culture and believe your potential should only be limited by how big you can dream. We make this a reality by empowering you with the tools, resources, and support you need to grow your career.

Marketing at Brex

The Marketing team tells the Brex story — turning product innovation into customer obsession. We develop messaging, shape the brand, and bring our platform to life through thoughtful, compelling content. Our team spans Revenue Marketing, Product Marketing, and Brand Marketing, and works cross-functionally with Product, Sales, Business Development, and Design to drive growth and build trust.

What you’ll do

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. Critically, you know how to build brand through a performance lens, connecting upper-funnel investments to near-term impact and long-term value creation. You’ll help accelerate Brex’s growth by scaling what works, continuously improving how we operate, and unlocking new opportunities for impact.

Where you’ll work

This role will be based in our Seattle office. We are a hybrid environment that combines the energy and connections of being in the office with the benefits and flexibility of working from home. Team members are expected to work in-office three days per week (Mondays, Wednesdays, and Thursdays). Brex also offers the flexibility to work remotely for up to four weeks per year, in one-week increments.

Responsibilities

• Growth & Pipeline Ownership: Own Meta + emerging channel budgets, CAC efficiency, conversion, and downstream pipeline/revenue across self-serve and sales-led motions.
• Signal & Measurement Strategy: Partner with Data and Marketing Ops to improve conversion signals, CAPI, and offline conversion tracking, enabling platforms to optimize toward higher-quality customers.
• Structured Experimentation: Build and execute a continuous, hypothesis-driven testing framework across audiences, bidding strategies, optimization events, landing pages, and creative concepts; document learnings to turn paid social into a predictable acquisition channel.
• Full-Funnel Growth: Build paid social strategies that create demand at the top of the funnel and efficiently convert it through retargeting and lower-funnel programs.
• Creative Strategy: Translate performance data into creative hypotheses and partner with Brand and Design to test, iterate, and scale winning concepts.
• Audience Strategy: Use first-party data, intent signals, modeled audiences, lookalikes, and platform automation to identify and scale high-value audiences.
• Cross-Functional Partnership: Partner with Analytics, Marketing Ops, Field / Events team, PMM, and Sales to connect paid social performance & programs to downstream pipeline and revenue outcomes.

Requirements