I’m building Muhasibi, an intelligent desktop application that unifies day-to-day accounting with inventory and sales operations. The flagship feature is rock-solid invoicing and billing, yet the platform must cover the full business cycle while staying intuitive for non-technical staff. Scope of work • Core accounting: create, track, and reconcile invoices; log expenses; and manage suppliers and clients from a single ledger. • Inventory & product control: real-time stock monitoring with low-level alerts that trigger automatic notifications. • Sales management: catalogue items, issue quotes, convert them to invoices, and record payments. • Reporting & analytics: interactive dashboards that surface cash-flow, profit, inventory turns, and other KPIs. • Multi-user architecture: granular permission levels so admins, accountants, and sales reps each see only what they need. • Security & continuity: encrypted local data plus optional cloud backup to safeguard against device loss. • OCR import: scan PDFs or photos of invoices/receipts and convert them to structured entries; Excel uploads should map fields automatically. • System alerts: configurable emails or pop-ups for due payments, credit limits, and stock thresholds. Tech expectations This is strictly a desktop build; you’re free to propose the stack (e.g., C#/.NET, JavaFX, Electron with Node/SQLite, etc.) so long as it delivers snappy performance and future-proof maintainability. An installer, auto-update mechanism, and clear database schema documentation are part of the deliverable. What I need to see from you Past work speaks louder than promises. Please link or demo previous accounting, ERP, or inventory projects that highlight similar modules—especially anything featuring OCR or role-based security. Acceptance criteria (summary) 1. All listed modules operate seamlessly on Windows 10/11 without external dependencies. 2. Invoicing workflow completes from issue to payment and is reflected instantly in reports. 3. OCR import achieves ≥90 % field-mapping accuracy on my supplied sample set. 4. Multi-user roles tested with at least three permission profiles. 5. Full source code, build scripts, and deployment instructions delivered. If your portfolio already shows you have solved comparable challenges, let’s discuss timelines and milestones right away.