Summary: Seeking a Senior Full Stack Engineer with strong React, Supabase, and Stripe expertise to build and scale a fintech application focused on real-time payments and secure data handling. Highlights: 1. Build and scale a fintech application 2. Focus on real-time payments and secure data handling 3. Collaborate in a fast-moving startup environment We’re looking for a Senior Full Stack Engineer with strong React expertise, solid backend experience, hands\-on Supabase, and deep experience with Stripe integrations and financial transaction systems. This role is focused on building and scaling a fintech application where real\-time payments, secure data handling, and seamless transaction flows are core to the product. **Responsibilities** * Build and maintain a full stack web application using React * Develop and integrate REST APIs, webhooks, and third party services such as Stripe * Design and manage PostgreSQL databases * Implement secure authentication and authorization systems * Ensure high performance for live, transaction based applications * Sync data seamlessly between web and mobile platforms * Maintain strong security practices around financial and sensitive user data * Collaborate in a startup environment with a small, fast moving team * 8\+ years of software development experience * Strong spoken and written English * Advanced experience with React on the frontend * Mid to senior level backend development experience * Hands on experience with Supabase * Experience with Stripe integrations on the backend * Strong knowledge of REST APIs and webhooks * Solid experience with PostgreSQL * Experience building or maintaining real time or transaction driven applications * Availability to work EST hours * Fintech or payments industry experience will be a plus