Full-stack app developer (Part-time, Equity only)

Full-Stack App Developer — HiWoxAbout HiWox
HiWox is a next-generation personalised healthcare and wellness intelligence ecosystem built around a Healthcare Operating System (HOS).
We are building a system that collects and structures data across 9 wellness dimensions, processes it through proprietary rule-based intelligence, and generates explainable, evidence-backed and consultant-validated personalised recommendations, rituals and wellness programs.
Role
Full-Stack App Developer — Equity-Based Founding Role
We are looking for a Full-Stack App Developer who can take ownership of building and scaling the technology infrastructure behind HiWox's mobile and web ecosystem.
This is an equity-only founding-team opportunity, designed for someone who wants long-term ownership in building the product rather than working as a conventional salaried developer.
Key Responsibilities
Mobile & Web Application Development
Build, maintain and improve HiWox's mobile and web applications.
Develop scalable frontend and backend systems.
Build clean, responsive and reliable user experiences.
Backend & APIs
Design and develop APIs, backend services and business logic.
Build secure authentication, user management and role-based access.
Develop database structures and data-management systems.
HiWox 9-Domain Ecosystem
Build technology structures for collecting and managing data across all 9 wellness dimensions.
Support assessments, consultations, wellness scores, recommendations, rituals and personalised programs.
Ensure different wellness datasets can work together within a unified architecture.
Dashboards & User Journeys
Develop dashboards for clients, consultants, HiWox Captains, partners and internal teams.
Build workflows covering onboarding, assessment, data collection, consultation, recommendations, progress tracking and reporting.
Implement compliance, engagement and transformation tracking.
Intelligence & Data Integration
Integrate HiWox's rule-based recommendation and intelligence systems into the product.
Work with Data Scientists and Healthcare Scientists to convert intelligence frameworks into functional product features.
Build systems for structured data collection, processing and recommendation delivery.
Devices & Integrations
Integrate healthcare devices, wearables, sensors and third-party APIs.
Build reliable pipelines for collecting and displaying biometric and wellness data.
Support future expansion toward phone sensors, wearables and connected-health technologies.
Security & Scalability
Implement appropriate healthcare data privacy and security practices.
Optimise application performance, reliability and scalability.
Design architecture capable of supporting growing users, partners and data volumes.
Testing, Deployment & Maintenance
Debug, test and continuously improve applications.
Manage deployment, monitoring and technical documentation.
Establish development practices that allow the product and engineering team to scale.
Cross-Functional Product Development
Work closely with the Product Owner, UI/UX team, Data Scientists, Healthcare Scientists and Wellness Consultants.
Translate product and healthcare requirements into functional technology solutions.
Participate in product validation and continuously improve the platform based on user feedback.
Ideal Candidate
Strong experience in full-stack application development.
Experience with mobile and/or web application development.
Strong understanding of frontend, backend, APIs and databases.
Experience with technologies such as React/React Native, Node.js, Python, SQL/NoSQL and cloud platforms is preferred.
Understanding of authentication, APIs, integrations and scalable architecture.
Experience working with data-driven, AI/ML, HealthTech, FinTech or other complex products is an advantage.
Strong problem-solving and ownership mindset.
Comfortable working in an early-stage startup environment.
Willingness to contribute strategically, not just execute assigned tickets.
Engagement
Position: Full-Stack App Developer
Nature: Equity-Only Founding Role
Time Commitment: Part-time, approximately 20–25 hours/week
Location: Remote / Hybrid
Compensation: Equity only at the current stage
Fixed salary: Planned after fundraising and revenue stabilisation
Equity: Based on contribution, technical expertise, responsibility, commitment and long-term ownership
Vesting: 5-year vesting for core founding members
What You Will Build
You will be responsible for helping build the technology backbone of HiWox — from user onboarding and wellness assessments to data collection, dashboards, consultations, rule-based intelligence, personalised recommendations, progress tracking and healthcare-device integrations.
This is an opportunity to become a technology owner within the founding team and help build HiWox from its early product stage into a scalable healthcare and wellness intelligence platform.
Skills: app,healthcare,intelligence,technology

Work arrangement
No