500M+ downloads. 80M+ 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 7M paid subscribers and the highest-rated experience in the App Store’s health category, we’ve spent 10 years earning trust at scale. Now, we’re building the next generation of digital health – AI-powered, privacy-first, clinically backed – to help our users know their body better.
The job
Senior Product Designers at Flo play a pivotal role in shaping complex, system-level design solutions that elevate user experiences across the Flo app. This role combines deep expertise in UX thinking, interaction design, systemic thinking, AI tooling and visual craft with the ability to architect scalable frameworks and influence product direction.
As a senior individual contributor, you will be tackling the most challenging design problems, setting the quality bar for the team, and ensuring designs are accessible, inclusive, and emotionally resonant. You will collaborate with product, engineering, research, medical, legal and content disciplines, leveraging high-fidelity prototypes to drive critical business decisions, raising craft excellence, and contributing significantly to Flo’s overarching vision.
Your Experience
Must have:
- 8+ years of professional experience designing mobile applications.
- Portfolio demonstrating expertise in systemic design, advanced prototyping skills, micro-interactions, and the ability to architect solutions with 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 leveraging AI/LLM tools to accelerate design exploration and streamline concept validation (e.g., Claude, Vercel).
- 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.
Nice to have:
- Experience designing gamified or behaviour-change-driven experiences.
- Experience working in health tech or regulated industries
What you'll be doing
You'll be responsible for:
- Lead complex design projects (0 → 1), creating scalable frameworks and systems that support growth and innovation.
- Proactively tackle complex and ambiguous challenges, defining requirements and prioritising the most impactful workstreams to deliver 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 high-fidelity prototypes and mock-ups using Figma or advanced tools, strategically utilising AI to streamline the concept-to-validation process.
- 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.
- Proactively mentor peers, junior designers, and non-designers, providing actionable feedback and upskilling guidance to raise the overall craft bar.
- 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.
What you'll be measured on:
- 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.
#LI-AJ1 #LI-Hybrid
Annual Salary Range (ranges may vary based on skills and experience)
£85,000—£105,000 GBP
How we work
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 seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it.
What you'll get
We support impact with meaningful reward. Here’s what that looks like:
- Competitive salary and annual reviews
- Opportunity to participate in Flo’s performance incentive scheme
- Paid holiday, sick leave, and female health leave
- Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents
- Accelerated professional growth through world-changing work and learning support
- In-person collaboration and work in a hybrid model, with 3 days per week spent in the office
- 5-week fully paid sabbatical at 5-year Floversary
- Flo Premium for friends & family, plus more health, pension and wellbeing perks
Diversity, equity and inclusion
Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role – nothing else. We’re proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.