Senior Product Designer

500M+ downloads. 77M+ monthly users. A decade of building – and we’re still accelerating.

Flo is the world’s #1 health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 – and we’re not slowing down.

With 6M paid subscribers and the highest-rated experience in the App Store’s health category, we’ve spent 10 years earning trust , we’re building the next generation of digital health – AI-powered, privacy-first, clinically backed – to help our users know their body better.

The Senior Product Designer plays a pivotal role in shaping complex, system-level design solutions that elevate user experiences across Flo’s app. This role combines deep expertise in interaction design, systemic thinking, and visual craft with the ability to architect scalable frameworks and influence product direction. As a senior individual contributor, the Senior Product Designer tackles the most challenging design problems, sets the quality bar for the team, and ensures designs are accessible, inclusive, and emotionally resonant.

They collaborate across product, engineering, research, and content disciplines, raising craft excellence and contributing significantly to Flo’s overarching design vision.

• 10+ years of professional experience designing mobile applications.
• Portfolio demonstrating systemic design, advanced interaction design, motion and micro-interaction expertise, and measurable product impact.
• Experience creating scalable frameworks, contribution to design systems, and interaction models.
• Proficiency in Figma and advanced prototyping tools (e.g., Protopie).
• Experience using motion and animation tools (e.g., Lottie, Rive, After Effects).
• Experience in AI/LLM-powered design exploration.
• Strong communication and presentation skills; ability to distill complex ideas into clear narratives and influence stakeholders.
• Deeply collaborative, with experience mentoring and raising the craft bar for design teams.

• Experience designing gamified or behaviour-change-driven experiences.
• Experience working in health tech or regulated industries

You'll be responsible for:

• Lead complex design projects (0 →
  1), creating scalable frameworks and systems that support growth and innovation.
• Translate ambiguous product and data challenges into clear, compelling, user-centred experiences.
• Design features, e2e flows, and experiments that align with user needs and business goals (e.g., engagement, retention, etc.).
• Produce prototypes and high-fidelity mock-ups using Figma or other prototyping tools.
• Develop and evolve interaction models, motion principles, and visual systems that scale across teams and inspire adoption.
• Collaborate closely with product managers, engineers, researchers, and content designers to deliver cohesive solutions.
• Mentor and support other designers through feedback, craft guidance, and knowledge sharing.
• Advocate for emotionally intelligent, ethical design and ensure accessibility standards are upheld at every stage.
• Be a key contributor to our design system, ensuring accessibility, inclusivity, and scalability in all outputs.
• Integrate AI tools into day to day work.

• Deliver complex design initiatives that significantly improve user engagement, retention, and user satisfaction outcomes.
• Strengthen Flo’s design systems, frameworks, animation and motion principles to enable scalable, high-quality design across teams.
• Raise team capability and craft standards by mentoring peers and contributing to a culture of design excellence.

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Salary Range - London - gross per year (ranges may vary based on skills and experience)

Salary Range - Vilnius - gross per month (ranges may vary based on skills and experience)

We’re a mission-led, product-driven team. We move fast, stay focused and take ownership – from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar.

You’ll be working with people who take their work…