Marshmallow

Principal Product Manager

Mid-Level
Full-Time
London, UK
Product

About 

Marshmallow

Billions of people want to move countries, but when they do they are locked out or overcharged for the financial products most people take for granted.

Your Responsibilities

  • Define and own a forward-looking growth product strategy, identifying bold opportunities to accelerate new business.
  • Lead the discovery, definition, and execution of new growth products and features, working closely with design, engineering, data science, and marketing.
  • Build and scale a culture of experimentation, leading the design of a robust A/B testing and measurement framework.
  • Explore and apply emerging technologies—including AI and personalisation models—to unlock new acquisition channels and improve user journeys.
  • Act as a leader for Growth across the business, setting vision and influencing at the exec level.
  • Partner with Growth Marketing to supercharge performance across SEO, referrals, affiliates, paid media, and organic channels.
  • Shape our Martech and content infrastructure to better support experimentation and real-time optimisation.
  • Own high-impact KPIs and clearly communicate trade-offs, priorities, and performance to the broader business.
  • Mentor other product managers and contribute to a strong product culture within the Growth team.

Required Skills and Experience

  • 7+ years of product management experience, ideally in high-growth environments like SaaS, marketplaces, or DTC/eCommerce.
  • Proven track record of building and scaling growth products or platforms from the ground up.
  • Experience with A/B testing at scale, experimentation frameworks, and understanding of statistical principles.
  • Comfort working with AI or data science-powered products, or a strong interest in developing this skill set.
  • Strong understanding of growth channels (e.g. SEO, performance marketing, CRM) and how product can enhance them.
  • Ability to set strategic direction while also sweating the details.
  • Bonus points if you’ve worked in an early-stage environment, led cross-functional pods, or launched new business lines.

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