Senior / Lead iOS Engineer

About the Company

[Employer hidden — sign up to reveal] 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, [Employer hidden — sign up to reveal] became the first product of its kind to reach a $1B valuation in 2024. With 7M paid subscribers and the highest-rated experience in the App Store's health category, [Employer hidden — sign up to reveal] is building the next generation of digital health – AI-powered, privacy-first, clinically backed.

The Job

As an iOS Engineer at [Employer hidden — sign up to reveal], you'll help shape the mobile experience for millions of people, doing genuinely meaningful work in women's health. Our app is trusted by 1 in 4 women aged 18–44 in the US and used across 100+ countries. You'll join a cross-functional team working across the full mobile lifecycle, from feature ideation through to release and iteration, with real ownership over value delivery end to end.

Your Experience

Must have:

• 6+ years in software engineering, with at least 3 years focused on building, shipping, and maintaining production mobile applications.
• Expert-level iOS development skills, with a proven track record of delivering high-quality apps at scale.
• Hands-on experience building complex mobile applications with rich, performant UIs — experience in global consumer-facing products is a strong plus.
• Deep proficiency in Swift; working knowledge of Objective-C and solid object-oriented design principles.
• Strong familiarity with Apple's ecosystem — frameworks, HIG guidelines, and end-to-end App Store submission and maintenance processes.
• Clear understanding of the mobile product lifecycle and comfortable working within Agile teams.
• A collaborative, growth-oriented mindset with the drive to take ownership and deliver.

Nice to have:

• Solid understanding of UX and interaction design principles, with the ability to collaborate effectively with designers and advocate for quality user experiences.
• Proven experience optimizing mobile app performance over constrained networks, including building and maintaining offline-first architectures.
• Hands-on experience with mobile CI/CD pipelines, including build automation, automated testing, and release workflows.
• Experience integrating with BI and analytics platforms, with familiarity in designing and interpreting A/B tests to drive product decisions.

What You'll Be Doing

• Building and maintaining features using modern frameworks, libraries, and internal component systems, ensuring consistency, scalability, and code quality across the codebase.
• Delivering polished, engaging user experiences that balance visual appeal with intuitive interaction design.
• Owning and contributing to a robust Continuous Delivery pipeline, ensuring fast, reliable, and safe releases to production.

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. #LI-Hybrid

What You'll Get

• Competitive salary and annual reviews
• Opportunity to participate in [Employer hidden — sign up to reveal]’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
• [Employer hidden — sign up to reveal] Premium for friends & family, plus more health, pension and wellbeing perks

Diversity, Equity and Inclusion

Our strength is in our differences. At [Employer hidden — sign up to reveal], 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.