Sheetpost — Multilingual Invoice Workflow Prototype

PROJECT STATUS: WORKFLOW PROTOTYPE Submission is simulated. There is no live KSeF integration or production-compliance claim. The linked site presents a product concept.

OVERVIEW Sheetpost explores how spreadsheet or CSV data can become a structured invoice preview in Poland’s KSeF context. I developed the multilingual workflow prototype.

THE USER JOURNEY • Import spreadsheet or CSV data • Map columns to invoice fields • Validate data and review issues • Inspect a structured invoice preview • Explore simulated submission

DESIGN FOCUS A complex process becomes a sequence users can inspect before proceeding. Clear states and multilingual interface copy explain each stage.

DELIVERED A deployed multi-step product demo for evaluating the workflow, with simulated submission.

RELATED SERVICE https://contra.com/s/XWOssQUl-interactive-product-demos-and-workflow-prototypes

GitHub repository: https://github.com/stefanbrkkk/sheetpost