Contact person: Web Classical Pivot DataGrid Plugin

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Location: Visnagar, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I need a brand-new “ClassicalDataGrid” plugin that mirrors the Finos Perspective Data Grid ([login to view URL]) but replaces its tree-style pivot with the traditional Excel-like layout. The work targets the browser only; my current tech stack combines Rust or C++ for the heavy lifting with a JS/HTML/CSS front end, so the final package has to slot cleanly into that toolchain.

Core requirements
• Classical pivot format: multiple row-header columns shown side-by-side instead of a hierarchical tree.
• Each header level must expand/collapse individually, with an option to repeat or suppress labels (“repeated label true/false”).
• Export the grid exactly as displayed to CSV and XLSX.
• Allow users to hide or reveal subtotals without disturbing underlying calculations.
• Preserve every other Perspective Data Grid UI feature—filtering, sorting, styling, virtual scrolling, etc.—unchanged.

Deliverables
1. Source code for the plugin (Rust/C++ module if compiled, plus JS bindings and front-end components).
2. Build/installation instructions and minimal demo page to prove it works in a modern browser.
3. Documentation of public APIs and any extra configuration flags you introduce.
4. A short test suite or reproducible steps that confirm the expand/collapse logic, export accuracy, and subtotal toggle.

Acceptance criteria
• Compiles and runs locally with one command (npm/yarn/cargo/cmake, as applicable).
• Matches Perspective’s performance for datasets up to 1 M rows.
• CSV/XLSX exports open in Excel with identical row/column arrangement.
• Delivered within 10 calendar days from project start.
• Group BY columns as per i photo mentioned

Feel free to suggest minor API tweaks if they make the integration cleaner, but the visual and functional spec above is fixed." (client-provided description)