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Senior Frontend Engineer - Growth Experimentation

United Kingdom, London · Job Posted February 21, 2026
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Job Description

At Eucalyptus, we’re on a mission to make healthcare simpler, safer, and more accessible. Patients face friction when navigating care, and the Growth squad focuses on building frontend web experiences that directly move key metrics—retention, engagement, and conversions—while shaping the overall patient experience. One of the key initiatives you’ll contribute to is experimentation across the frontend platform, designing and testing features that influence how patients engage with our services. This is a chance to drive measurable impact and shape best practices for the platform used across the business.

Job Responsibility

  • Take ownership of the frontend web platform, ensuring scalable, polished, high-performance experiences
  • Design and deliver growth-focused experiments that improve retention, engagement, and conversions
  • Collaborate closely with product and marketing to translate insights into actionable features
  • Influence frontend best practices across the team and mentor teammates

Requirements

  • Strong React & TypeScript experience, with full ownership of web products
  • Experienced working on frontend platforms or product-facing web apps
  • Have a commercial mindset, understanding how features and experiments impact business metrics
  • Thrive in autonomous, senior-level roles, able to take ownership end-to-end

Nice to have

  • Growth-focused engineering experience
  • Experience with GraphQL

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