I need a developer to build a reconciliation application tailored to a pharmaceutical environment. The goal is to give me a clear, reliable way to compare and match the many data streams that flow through our business—from purchase orders and warehouse receipts to sales invoices and batch-level records—so discrepancies are flagged immediately and nothing slips past compliance checks. Right now I am not locked into any particular stack or platform. A stand-alone desktop app, a web app, or something that can later plug into an ERP are all on the table; I am happy to follow your technical recommendation as long as the end result is secure, auditable, and easy for my non-technical staff to operate. Key points I want covered: • A reconciliation engine that can import CSV, Excel, or direct database feeds and match them against each other using configurable rules. • A clean dashboard that shows matched items, outstanding variances, and a drill-down view so we can see exactly which batch, lot, or invoice line is causing the issue. • User and role management so I can restrict who sees financial versus inventory data. • Full source code and straightforward deployment instructions. You can choose the language and framework you are most comfortable with—Python/Django, .NET, Java Spring, Node.js or another modern stack—provided it supports strong data handling and reporting. If you have built reconciliation or pharmaceutical software before, let me know. A brief outline of how you would structure the matching logic and any libraries or packages you would rely on will help me select the best candidate.