Technical case study

Gianely

A custom formula calculator for a nicotine salt and vape juice manufacturer, connected to saved formulas, product customization, and checkout.

Real public interface. Calculator module. Captured October 2026.

Project overview

A custom formula calculator for a nicotine salt and vape juice manufacturer, connected to saved formulas, product customization, and checkout.

Full-Stack Developer; Sole Developer of Calculator Module

Turn configurable formula inputs into validated calculations and persist them as reusable, orderable product configurations.

Independently implemented the calculator frontend, multi-parameter formula logic, real-time recalculation, validation, and unit conversion.
Built Laravel APIs and persistence for customer formulas, saved-formula management, duplication, and editing.
Implemented administrator approval for publicly shared formulas.
Connected formulas to product customization, backend pricing, ordering, and checkout.

Technical architecture Conceptual flow

Coordinating reactive calculations, unit conversion, persisted formulas, and backend pricing.

Keep calculation feedback immediate in the interface while using Laravel APIs for persistence and ordering integration.

Ownership refers to the complete custom calculator module; it does not imply sole ownership of the entire Gianely business platform.

Real captures of the public interface.

4 captures

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