Linea - Enterprise Invoice Management System
A platform to manage invoicing, payments, and compliance. It supports multiple workspaces, client management, customizable invoices, payment tracking, automated reminders, and analytics.
Challenge
Businesses needed a unified invoice management system that handles multi-workspace operations, Indian tax compliance (GST, IRN, e-invoicing), payment processing, and team collaboration with role-based access.
Solution
Built Linea, a full-stack invoice management platform with multi-tenant architecture, Indian compliance features, AI-powered assistance, and analytics.
Approach & Implementation
- Multi-tenant architecture: Workspace isolation with seat-based user management and RBAC
- Indian compliance: GST calculation, IRN generation for e-invoicing, HSN/SAC code management, AI-powered compliance auditing
- Payment integration: Razorpay gateway with webhook handling for subscription management
- AI features: Encrypted chat assistant using Google Gemini, Anthropic, and OpenAI SDKs
- Analytics: Real-time dashboards with predictive revenue forecasting and business insights
- Template system: Customizable invoice templates with dynamic PDF generation
- Security: End-to-end encryption for sensitive data, rate limiting with Upstash Redis, secure authentication with NextAuth
Key Features Delivered
- Multi-workspace management with team collaboration
- Indian tax compliance (GST, IRN, e-invoicing)
- Payment processing with Razorpay integration
- AI-powered compliance auditing and chat assistant
- Real-time analytics and predictive forecasting
- Customizable invoice templates with PDF export
- Automated payment reminders and notifications
- Client management with segmentation and health scoring
- Role-based access control with audit logging
Results
- Scalable multi-tenant architecture supporting multiple businesses
- Compliance-ready for Indian tax regulations
- Improved invoice processing efficiency with automation
- Enhanced user experience with AI-powered features
- Secure, production-ready platform with enterprise-grade security
Technical Stack
Next.js 15, React 19, TypeScript, Prisma ORM, PostgreSQL, tRPC, NextAuth, TanStack React Query, Radix UI, Framer Motion, GSAP, Recharts, AI SDK (Google, Anthropic, OpenAI), Razorpay, UploadThing, Upstash Redis, Zod
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