Senior Full-Stack & Mobile Engineer — Next.js, Supabase, React Native

We are looking for a Senior Full-Stack & Mobile Engineer to take ownership of an existing SaaS platform called Pool Companion, built for pool service businesses. The platform includes a web dashboard, technician iOS app, and various features. The role involves auditing the codebase, improving architecture and reliability, and building new features.

• Perform a thorough technical review of the existing Pool Companion platform
• Audit the existing codebase and architecture
• Identify technical debt and high-risk areas
• Review database design and Supabase implementation
• Review authentication and multi-tenant data security
• Review Supabase Row Level Security policies
• Improve application reliability
• Improve performance where necessary
• Fix bugs found during real-world technician use
• Improve the iOS/mobile application
• Improve GPS and background location tracking
• Improve offline and poor-connectivity behaviour
• Improve photo uploading and data syncing
• Improve API integrations and webhook reliability
• Review Stripe/payment integrations
• Improve automated testing
• Improve deployment and release processes
• Create and maintain staging and production environments
• Implement monitoring, logging and error reporting
• Review and improve AI-generated code
• Help determine what should be refactored and what should remain
• Build new features as the product evolves

• Strong experience building and maintaining real production SaaS applications
• Comfortable working independently and making technical decisions
• Strong experience with Next.js
• Strong experience with React
• Strong experience with TypeScript
• Strong experience with Supabase
• Strong experience with PostgreSQL
• Strong experience with Database architecture
• Strong experience with Multi-tenant SaaS applications
• Strong experience with Authentication and permissions
• Strong experience with Row Level Security
• Strong experience with API integrations
• Strong experience with Webhooks
• Strong experience with Mobile development
• Strong experience with React Native or similar frameworks
• Strong experience with Git and GitHub
• Strong experience with Testing and debugging
• Strong experience with Production deployments
• Strong experience with Security
• Strong experience with Performance optimisation
• Experience with background GPS/location tracking on iOS would be highly regarded
• Experience with Stripe, notifications, mapping, routing or field-service applications would also be valuable
• Comfortable using AI to increase development speed while maintaining strong engineering standards

• Clear weekly priorities
• Use of tools like GitHub, GitHub Projects or Linear, Slack, Loom, Staging environment
• Short Loom video for completed features
• Short written daily update covering Completed, Working On, Blocked, Next
• Focus on working software and outcomes
• Full-time, long-term position
• Remote
• Salary depending on experience
• Performance reviews
• Long-term growth opportunity
• Potential to move into Lead Engineer / Head of Engineering / CTO-level position