Principal Product Designer

Full-Time · Remote

About Stardust

Stardust is a design-led reproductive health app used by over 2 million monthly active users. We blend scientific insights with wonder and ancient wisdom — offering lunar cycle syncing, friend syncing, a best-in-class pregnancy experience, and a partner option. Our engineering team of 7 spans iOS, Android, backend, and web. We are a seed-stage company building with the ambition and complexity of a much larger organization.

About This Role

We are hiring a Principal Product Designer to own the full design layer of Stardust — the design system, the core product experience, and the features that millions of people interact with every day. You'll work directly with engineers, product, and growth to ship end-to-end in a small, fast-paced startup. You care deeply about femtech and about building something that helps millions of menstruators better understand their body, mood, and how it all connects to the broader universe. This role reports directly to the CEO.

Roles & Responsibilities

As Principal Product Designer, you own three critical pillars:

Shape the Core Product Experience

Millions of people open Stardust every day to understand what's happening in their body. You decide what that experience looks and feels like

• Lead design across all core features: cycle and temperature tracking, predictions, sleep, mood logging, pregnancy mode, and partner view
• Turn complex health data into interfaces that feel like art, never clinical. Set the bar for how health information should look and feel
• Write your own briefs, own the spec, and hand off clean enough to ship right
• Stay close to implementation and work directly with engineers to protect design intent through production
• Track what ships, review what works, report back.

Define and Evolve the Design System

The design system is the foundation everything else is built on

• Own the Stardust design system end-to-end and evolve it as the product grows
• Maintain consistency and quality across iOS, Android, and web while respecting what makes each platform different
• Write contribution guidelines so engineers can build inside the system without you

Drive Growth through Design

Great design isn't just how it looks. It's how it converts, retains, and brings people back

• Work with growth team to design A/B experiments on high-leverage funnel steps with a bias toward learning fast
• Build a modular component library so experiments don't require full redesigns
• Use data to find drop-off, form hypotheses, iterate

What We're Looking For

• Comfortable designing for both iOS and Android native apps as well as web. You understand the nuances of each platform and know when the rules differ
• 6+ years of product design experience, including significant time as the lead or sole designer on a consumer mobile app
• Exceptional visual craft. You make interfaces that feel alive, not just usable. Your work doesn't look like anyone else's
• You run your own process — you don't need a PM to write your brief or a manager to set your priorities
• Figma fluency. You've built and maintained design systems, not just used them
• A portfolio showing real range: systems thinking, complex health or data UI, growth surfaces, and rich visual design
• You know how to ship specs and prototypes. You know when to use what, and you follow through to production
• Strong point of view on what makes a product feel distinctive and you push back when something is generic
• Experience in health, wellness, femtech, or consumer subscription apps
• Interest in AI and how it's changing the design process.

Bonus

• Familiarity with motion and interaction design

Compensation & Benefits

Compensation for this role is competitive and will be determined based on experience and skills.

At Stardust, we prioritize your well-being and work–life balance. Full-time employees enjoy:

• Remote working flexibility
• Flexible paid vacation and sick leave
• Paid menstrual leave
• Enhanced parental leave and other leave of absences
• Eleven (11) paid holidays
• Comprehensive health insurance (medical, dental, and vision) with a monthly company contribution of $1,000
• 401(k) plan