Senior Full-Stack Engineer (TypeScript)

• Chat & real-time architecture - WebSocket-based event streaming, agent notification routing, dynamic query handling.
• Cash forecast visualization - Probabilistic forecasts with uncertainty bands and drill-down into underlying invoices and assumptions.
• Counterparty portal - A lightweight portal where suppliers and customers can see invoice status, disputes, and payment promises via secure magic links.
• Approval UI - The human-in-the-loop interface where agent reasoning and source documents are reviewed before actions are approved.
• Authentication & session management - OAuth 2.0 / OIDC integration, JWT with tenant context, session lifecycle (Redis-backed), magic link token issuance for the counterparty portal.
• API / BFF (Backend-for-Frontend) layer - The TypeScript service layer that mediates between the React frontend and the Python agent backend. REST, GraphQL, and WebSocket endpoints with tenant-scoped security.
• MCP server - A Model Context Protocol endpoint for external AI agent integration, enabling agent-to-agent interoperability across the supply chain.

Do you have experience in TypeScript?, * 5+ years architecting TypeScript/React applications in production.

• Systems design instincts - you think in components, contracts, data flows, and failure modes.
• Deep experience with real-time architectures (WebSockets, event-driven frontends).
• Experience designing data visualization systems and API layers for multi-tenant SaaS.
• Strong understanding of frontend security (CSP, CSRF, session management, input sanitization).
• Effective use of AI coding tools with strong code review skills for security-sensitive output.
• Strong product sense. You have opinions, you back them with data and gut, and you speak up.