Secure the Ultimate B2B Invoicing Asset

Production-Ready Next.js 14 Engine with Bulletproof GoBD Compliance. Save $80,000+ in Development Costs and 6+ Months of Time-to-Market.
⚠️ THE RISK & COST
Building a legally compliant, unalterable billing backend in Europe is a financial black hole. It requires months of senior engineering power, compliance testing, and high legal fees. Simple server crashes can corrupt transaction chains, leading to regulatory fines. Why waste $80,000+ building it from scratch when you can buy the perfect foundation today?
💎 THE SHORTCUT
"meister-v2" is a 100% finished, production-ready B2B Invoicing SaaS Infrastructure. Built to absolute enterprise standards, it allows any platform, agency, or startup to instantly plug in a secure billing core.
🚀 WHY CTOs BUY THIS INSTANTLY:
Unbreakable GoBD Compliance (§146 AO): Cryptographically linked audit ledger (SHA-256 chain). Wrapped in atomic PostgreSQL transactions with Advisory Locks. Data loss or manipulation is mathematically impossible.
Enterprise Security: Strict tenant data isolation via native PostgreSQL Row-Level Security (RLS). Hardened JWKS validation (jose library).
Precision Math: Powered by big.js to eliminate JavaScript floating-point rounding errors. Perfect for complex EU tax calculations.
Zero Technical Debt: Strict Hexagonal Architecture (TypeScript). Clean UI dashboard, automated CI/CD (GitHub Actions), and full Vitest integration tests.
📦 WHAT YOU BUY (100% IP TRANSFER)
Full Source Code & private GitHub Repository ownership.
Production-hardened CI/CD Pipelines & Developer Documentation.
Clean UI Dashboard – ready for your branding.
💰 THE INVESTMENT DEAL
Turnkey Business: Hook up Stripe, onboard 3–5 local clients, and generate high-margin Monthly Recurring Revenue (MRR) instantly.
Asking Price: $39,000 USD (Open to serious offers)
Safe Transfer: Secured and handled directly via SideProjectors.