SaaS & Marketplace Platform
Multi-role products with real authorisation, real-time features and payment flows that reconcile.
Multi-sided products fail in predictable places: authorisation that checks the wrong thing, payment state that drifts out of sync with order state, and real-time features that fall over the moment there is more than one server process.
I have built and shipped this shape of system — a multi-vendor services marketplace with client, admin and superadmin roles, live chat that converts into orders, payment capture with webhook reconciliation, and dispute handling.
The parts that matter get built properly the first time: permission checks in every server action rather than only at the router, payment capture that is idempotent so a retried webhook cannot double-credit an account, and audit logging so you can reconstruct what happened when something is disputed.
What you get
Multi-role access control
Authorisation enforced per operation, not only at the route.
Payment capture and reconciliation
Idempotent webhooks; order state and payment state cannot drift.
Real-time features
Chat, notifications and live status, built to survive multiple processes.
Admin and superadmin dashboards
Operations, disputes, analytics, audit log.
Rate limiting and abuse defence
Shared across instances, not per-process.
Deployment and operations runbook
Written handover, so you are not dependent on me.
Next.js · Node.js · PostgreSQL · Redis · WebSockets · Docker
Questions about this
Can we start smaller and grow into it?
That is usually the right call. We scope a first release that a real user can complete a real transaction in, ship it, then build the next phase against what you learn.