Full-Stack Developer (Founding Engineer)
Location: London, United Kingdom (Hybrid) Employment Type: Full-Time Department: Engineering Compensation: £50,000 + Equity
About Zenrox
Zenrox Healthcare UK is building an AI-powered marketplace that connects healthcare providers with MHRA-compliant medical equipment suppliers. Our flagship platform, ZenroxIQ , transforms procurement through intelligent supplier matching, automated compliance workflows, and predictive analytics—serving NHS trusts and private healthcare organisations across the UK.
The Opportunity
We are seeking a talented Full-Stack Developer to join as a Founding Engineer , playing a key role in designing, building, and scaling our marketplace platform.
This is a hands‑on role offering end-to-end ownership across the technology stack—from crafting seamless user experiences to developing robust backend systems. You will work closely with the CTO to shape architecture, implement core features, and deliver a high-performance platform that drives efficiency in healthcare procurement.
Key Responsibilities
Platform Development
- Develop, customise, and enhance a WordPress/WooCommerce-based marketplace platform
- Build core features such as quote request systems, supplier matching, and order workflow management
- Design and implement scalable backend services supporting marketplace operations
Frontend & User Experience
- Develop responsive, high-quality user interfaces using modern JavaScript frameworks (e.g., React )
- Optimise user experience across buyer and supplier journeys
- Ensure cross-browser compatibility and mobile responsiveness
AI Integration & Innovation
- Integrate AI-driven capabilities such as visual search and pricing optimisation into the platform
- Collaborate on the implementation of intelligent features that enhance procurement decision‑making
API & System Integration
- Design, develop, and maintain RESTful APIs
- Integrate third‑party services including payment gateways , compliance verification systems, and analytics tools
- Implement secure payment processing and escrow functionalities
Performance, Security & Compliance
- Optimise platform performance, scalability, and reliability
- Apply secure coding practices and ensure compliance with GDPR and data protection standards
- Maintain high availability and system integrity
Collaboration & Technical Strategy
- Work closely with the CTO on architecture, technical design, and system scalability
- Contribute to technical decision‑making, documentation, and engineering best practices
- Participate in agile development processes and continuous improvement initiatives
Requirements
- Minimum of 3+ years' experience in full‑stack development
- Strong proficiency in PHP with hands‑on WordPress/WooCommerce development experience
- Solid frontend development skills using JavaScript and frameworks such as React
- Experience with database design and optimisation (MySQL or PostgreSQL)
- Strong understanding of RESTful API design and integration
- Knowledge of secure coding practices and data protection (GDPR)
- Ability to work independently, take ownership, and make pragmatic technical decisions
Preferred / Advantageous Experience
- Experience building marketplace or e‑commerce platforms
- Hands‑on experience with payment gateway integrations (e.g., Stripe , PayPal )
- Experience developing B2B or enterprise-grade software solutions
- Familiarity with WooCommerce plugins (e.g., YITH or similar tools)
- Exposure to healthcare or regulated industries
- DevOps experience (e.g., AWS , Docker , CI/CD pipelines)
Why Join Zenrox
- Founding engineering role with meaningful ownership and equity participation
- Opportunity to build critical infrastructure for healthcare procurement
- High level of autonomy to design and implement end‑to‑end solutions
- Direct collaboration with a visionary founding team
- Clear pathway to technical leadership roles as the company scales
How to Apply
Interested candidates should submit their:
- CV
- GitHub profile
- Link to a relevant project (or a brief project description)
Position URL:
Email Subject Line: Full-Stack Developer Application
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