
React Native Developer
Job Description
Posted on: February 24, 2026
Volunteer for a startup using AI to close the gender health gap! 🩺ENDOless is a privacy-first, AI-powered health data platform designed to correct structural gender bias in healthcare and improve diagnosis for those living with chronic pelvic pain.
Women experience significant health inequality, with diagnostic delays for conditions like endometriosis averaging 7–10 years. This is a systemic data crisis; many medical models are trained on male-dominant datasets, leading to biased diagnostic pathways. Chronic pain that is dismissed or misdiagnosed leads to higher rates of professional dropout and hundreds of billions in lost productivity annually—turning health inequality into economic inequality.
ENDOless addresses the root cause: the absence of high-quality data representing women’s lived experiences. We provide a digital tool for tracking symptoms and pain patterns in high resolution, using AI to generate personalized insights and flare-up predictions. Beyond individual support, we transform anonymized, ethically structured data into research-grade datasets. This enables healthcare providers and institutions to better understand health patterns, leading to earlier interventions and more equitable clinical outcomes.
Role (Volunteer, unpaid): React Native Developer (iOS Focus – Apple Health Integration)Role Description: We are looking for a React Native developer with strong iOS experience to help us scale the application to the next level.
🎯 Your Role
As a React Native Developer (iOS focus), you will:
- Develop and maintain our React Native mobile application
- Implement and optimize Apple Health integration (HealthKit)
- Build secure API integrations (backend & third-party services)
- Ensure performance, stability, and clean architecture
- Contribute to feature scalability and future medical-grade readiness
You won’t just execute tickets.
You’ll help shape architecture decisions in a product that handles sensitive health data.
🧠 Required Experience
- 3+ years of experience in React Native development
- Strong understanding of iOS ecosystem
- Experience with Apple Health / HealthKit integration
- Experience integrating REST APIs
- Solid knowledge of mobile app architecture and state management
- Understanding of secure data handling practices
Nice to have:
- Experience with health-related apps
- Familiarity with GDPR / EU data protection constraints
- Experience with performance optimization
- Experience working in early-stage startups
Requirements
- Based in the European Union
- Fluent in English
- Comfortable working in a distributed team
- Proactive and autonomous
What You’ll Impact
- Data quality and reliability
- Wearable integration layer
- User retention through UX stability
- Technical foundation for regulatory progression
Your work directly influences:
- Clinical validation
- Research partnerships
- Fundraising credibility
This is not just frontend development.
This is building the data layer that researchers and institutions will rely on.
🚀 What We Offer
- Strategic role in a mission-driven healthtech startup
- Direct collaboration with founder & CTO
- Real ownership of technical modules
- Equity opportunity aligned with fundraising milestones
- Exposure to EU health innovation ecosystem
About ENDOless
We are not building a simple tracking app.
We are building:
- A high-resolution health data collection engine
- Apple Health–connected physiological data integration
- AI-powered prediction modules
- Secure API-based research infrastructure
- A GDPR-first, EU-compliant architecture
You’ll be working at the intersection of mobile development, health data, and AI infrastructure.
Time Commitment: Volunteer [To add] hours per week remotely 💻If you want to make change happen, apply to volunteer with ENDOless now!
Apply now
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