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Stash

Investing app with fractional shares

Growth Manager - Paid Social

Performance & Paid MarketingConfirmed live in the last 24 hours
Full-timeNew York, NY, USA

About the Job

Requirements

  • Have 4–6 years of hands-on experience buying and optimizing paid social, such as Meta and/or TikTok, with a track record tied to performance metrics.
  • Have deep knowledge of working with mobile measurement partners such as AppsFlyer.
  • Have experience building and executing testing roadmaps across media and landing pages.
  • Have strong analytical skills, including comfort with performance data and experiment design, and the ability to translate insights into action.
  • Have a bias for speed and ownership.
  • Have strong communication skills and the ability to partner effectively with creative, data, and cross-functional stakeholders.

Responsibilities

  • Develop and own the strategy and execution for paid social, such as Meta and TikTok, and mobile ad networks, such as AppLovin, focused on efficient new-customer acquisition.
  • Manage budgets, pacing, bidding, audience and campaign-structure decisions, and optimization to improve customer acquisition cost, payback, and scalable growth.
  • Build and manage a testing roadmap that maintains a constant stream of media experiments in market.
  • Own acquisition landing-page experimentation tied to the channels by prioritizing the test backlog, defining success metrics, and deciding whether to ship, stop, or scale based on performance.
  • Partner with the Performance Creative Strategist on message match between ads and landing pages, and own performance readouts and decisions.
  • Identify and implement AI-driven tools and workflows that accelerate reporting, optimization, experiment tracking, and daily media operations.
  • Analyze performance data to identify what is working, what is decaying, and where the next dollar should go.
  • Turn learnings into new hypotheses across targeting, bidding, campaign structure, offers, and landing pages.
  • Report on channel and funnel performance and share insights with the broader acquisition and marketing teams.
  • Collaborate closely with the Performance Creative Strategist to connect creative, partners, and paid media, including whitelisting and Spark campaigns where creators feed paid media.
  • Partner with Data, Product, Brand, and Martech on attribution, incrementality, and measurement.
  • Provide media input on campaign planning and, over time, expansion into additional performance channels.

Desired Qualifications

  • Experience operating with AI tools or automation to increase leverage.
  • Experience with mobile ad networks or user acquisition platforms such as AppLovin, or strong adjacent mobile-performance experience.
  • Experience owning landing-page or conversion-rate-optimization testing for acquisition funnels.
  • Familiarity with fintech, consumer finance, or another regulated industry.
  • Experience with incrementality testing, attribution, or media-mix measurement.
  • Experience standing up or scaling additional performance channels beyond social and mobile.
  • Curiosity about and familiarity with AI tools that can help streamline and improve processes.

About the Company

Stash

Investing app with fractional shares

Stash provides a fintech investing app that makes saving and growing wealth accessible for everyday Americans, allowing self-directed investing in stocks and ETFs with fractional shares, plus automated investing based on goals. Users fund accounts, invest or automate based on personal targets, and earn interest on cash balances, with a Stock-Back card that rewards users with stock as they spend. The platform differentiates itself by offering tiered subscription access to guidance and features and by pairing a workplace benefits program (StashWorks) with employer partnerships, along with embedded stock rewards. Its goal is to help people grow their savings and invest for the future through simple, affordable tools integrated into daily finances and workplaces.

Company size
201-500
Company stage
Acquired
Total funding
$656.9M
Headquarters
New York City, New York
Founded
2015

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