Web App / SaaS Platform2025 - 2026Product & Frontend Engineer · White devs Agency · Plateforme SaaS

FlowEx

Social publishing & conversational lead automation SaaS with native Mobile Money billing.

React 18TypeScriptTailwind CSSNode.jsExpressNeon PostgreSQLPrismaMobile Money FCFAVite
FlowEx

Project Overview & Context

End-to-end architecture of a SaaS combining social scheduling and conversational lead automation, engineered to overcome West African payment gateway barriers.

The Problem & Constraints

Global tools mandate USD/EUR credit cards unavailable to most West African SMBs, completely ignoring local Mobile Money workflows.

Engineering Solution & Product Decisions

Built a unified engine synchronizing multi-channel publishing and chat automations, seamlessly wired to local payments (Mobile Money FCFA: MTN, Moov, Orange, Wave), with AES-256-GCM token encryption.

Live Production Mobile Money Gateways:
MTN Mobile Money
Moov Money
Wave Mobile Money
Celtiis Cash

Technical Architecture

Optimized React/TypeScript frontend with granular vendor splitting, modular Node.js backend using Prisma ORM and pooled Neon Serverless PostgreSQL.

Key Deliverables

  • Editorial scheduling dashboard with interactive calendar
  • Visual conversational flow builder
  • Multi-tier recurring subscription billing with verified local payments (Mobile Money FCFA) webhooks
  • Unified lead inbox for omnichannel prospect management

Key Challenges & Trade-offs

Ensuring complete interface transparency: robust empty states, real-time webhook synchronization, and deterministic state handling.

Verifiable Outcomes & Value

Fully operational production-grade platform ready for West African commercial rollout.

Looking to ship products built to this high standard?

Let's talk about your technical vision and growth targets.