I’m building a subscription-based SaaS platform that will let restaurant owners sign up on monthly or yearly plans and run their day-to-day operations from a single dashboard. The core of the product revolves around three pillars: reservation management, real-time inventory tracking, and a space for diners to leave reviews and feedback that the venue can monitor and respond to. Because my target market spans different regions, the entire interface—client portal, owner dashboard, and public widgets—needs to be multilingual from day one, with an architecture that makes adding further languages straightforward rather than a retrofit. Subscriptions will be billed automatically. Credit/debit cards, PayPal, and bank transfers must be offered at checkout, with the usual dunning flows, plan upgrades/downgrades, and prorated billing handled by the system. Key deliverables • Multi-tenant SaaS web application (secure tenant isolation). • Modules: reservations, stock control, customer feedback, analytics and reporting. • Admin back-office to manage plans, venues, and language packs. • Integrated payment gateway layer supporting card, PayPal, and bank transfer flows. • Responsive UI (desktop, tablet, mobile) and documented REST/GraphQL API for future mobile apps. • Deployment scripts and CI/CD pipeline so releases can be pushed with minimal downtime. • Post-launch warranty period and concise technical documentation. Acceptance criteria • A new restaurant can create an account, choose a plan, pay, and gain access in one session. • Reservation calendar syncs in real time across devices. • Inventory deductions and low-stock alerts trigger instantly after order entry. • Reviews appear on the restaurant’s public page only after owner approval, with moderation logs stored. • Switching the UI language reflects throughout without page reload or data loss. Feel free to suggest the stack you are most productive with, though a modern cloud-native approach (e.g., React or Vue + Node, Django, or Laravel back end on AWS/Azure/GCP) is preferred for scalability. Please share a brief on similar SaaS platforms you’ve shipped, including links or screenshots. I’m ready to move quickly once the right fit is found.