Full-Stack Developer Needed to Take Over Existing Superjoes Platform – Fintech, Logistics, Marketplace & Mobile Apps

Title: Full-Stack Developer to Take Over Existing Superjoes Platform Superjoes is an existing Nigerian digital services platform covering logistics, bill payments, rewards, gift cards and rider services. We need an experienced full-stack developer to take over the existing codebase, fix outstanding issues and continue development without unnecessarily rebuilding the application. Scope of Work: 1. Audit existing source code, database, APIs and infrastructure. 2. Complete gift card selling and improve KYC integration. 3. Develop automated email and push notification campaigns. 4. Implement milestone-based rewards and anti-fraud controls. 5. Develop a business marketplace with product listings, ordering and delivery tracking. 6. Build multi-company logistics and rider management. 7. Implement centralized referral campaigns and bonus management. 8. Improve security, admin controls, testing, documentation and deployment. Applicants must have experience with existing application takeovers, APIs, mobile apps and backend development. Please provide relevant portfolio examples, estimated costs per module and timelines. Work will be milestone-based.