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
We're building simple, meaningful casual games for adults — experiences designed to support mental clarity, cognitive stimulation, and long-term brain engagement.
We're not creating complex strategy systems or immersive fantasy worlds. Our games live inside a health-focused ecosystem. They are:
* Lightweight
* Accessible
* Purpose-driven
* Designed for daily use
We believe in simplicity done exceptionally well. Elegant mechanics over complexity.
As a Game Designer, you'll craft intuitive casual game experiences that support cognitive longevity while driving engagement and retention.
You'll design core mechanics that are easy to understand, satisfying to interact with, and meaningful to return to — every day.
You'll work at the intersection of game design, behavioral science, and product thinking.
Your Experience
Must have:
* Experience designing casual or hyper-casual games
* Strong systems thinking with a simplicity-first mindset
* Understanding of retention mechanics and player motivation
* Comfort working with product metrics and A/B tests
* Clear communication and structured documentation skills
* Interest in cognitive health or behavioral science
* Familiarity with mobile development (Unity is a plus)
What you'll be doing
You'll be responsible for:
* Designing simple, intuitive casual game mechanics
* Developing and iterating on engaging core loops
* Balancing progression and difficulty scaling
* Creating clear, structured, actionable game design documentation
* Collaborating closely with product, analytics, and development teams
* Improving mechanics using data insights and user feedback
* Running experiments and contribute to A/B testing initiatives
Your decisions will be grounded in measurable outcomes — not assumptions.
3 month contract - start ASAP
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.