High-Speed Multi-Session Form Filler Tool

I am looking for an experienced full-stack developer or Chrome extension specialist to build a custom browser tool designed to handle high-traffic web portals efficiently. The primary goal of this tool is to allow a user to manage multiple isolated browser sessions/profiles simultaneously, pre-fill form data across all of them, and execute rapid, automated data injection and button clicks with a single action to bypass slow-loading traffic spikes and secure multiple bookings across different accounts instantly. Key Requirements & Modules: Multi-Session Isolation: Ability to run and manage multiple independent browser profiles or tabs simultaneously without shared cookies or session conflicts. Master Profile & Auto-Fill: A centralized settings panel to store pre-filled form data (such as names, contact details, and identification numbers) and inject them instantly into target fields. Single-Click Batch Automation: A trigger mechanism that simultaneously injects data, checks required agreements, and simulates click events across multiple open form windows in a fraction of a second. Speed Optimization: Lightweight script architecture built to minimize latency during peak server traffic and high-demand windows. Deliverables: Fully functional Chrome Extension or desktop automation script source code. Clear instructions on how to set up multi-profile environments and operate the tool locally. Please share examples of similar multi-session automation tools or high-speed form fillers you have built, along with your estimated timeline and cost.