Power Apps UX/UI Specialist – Matrix Interface

We are looking for an experienced Microsoft Power Apps UX/UI specialist to assist with designing and developing a custom registration matrix interface within a Microsoft Power Platform solution. The platform is used to manage fund registrations across multiple jurisdictions and currently operates using Dataverse and model-driven apps.
We require a more scalable and user-friendly matrix-style interface for operational users. The existing standard model-driven grid functionality has limitations with horizontal and vertical scrolling, freeze pane/fixed column behaviour, usability for large matrices, dynamic hiding/showing of columns, and overall UX when working with high-volume registration data.
We are exploring a custom Canvas App, Custom Page, or PCF-style approach and are looking for someone with strong experience designing advanced Power Apps interfaces and data-driven matrix/grid layouts.

Scope of Work
The successful contractor will assist with designing a scalable matrix-style UI within Power Apps, creating a responsive scrolling interface, implementing fixed identifier columns (freeze-pane style behaviour), dynamically hiding columns where no data exists, improving usability for large datasets, advising on the best technical approach (Canvas App vs PCF vs Custom Page), working with Dataverse tables and relationships, supporting UX optimisation for operational users, and potentially implementing proof-of-concept components. The solution will need to support Funds, Sub-Funds, Share Classes, jurisdiction/registration locations, and registration statuses and dates.

Technical Environment
Current technology stack includes Microsoft Power Platform, Dataverse, Model-Driven Apps, Power Apps Grid Control, JavaScript, Power Automate, and Microsoft 365. Experience with PCF Controls, React/TypeScript, advanced Canvas App design, responsive Power Apps layouts, complex Dataverse-driven interfaces, and grid or matrix-style UI implementations would be highly advantageous.

Deliverables
Initial engagement would focus on UX/UI review and recommendations, proposed technical approach, wireframe or mock-up design, working prototype/proof of concept, and recommendations for scalable implementation. There is potential for follow-on implementation work depending on outcome.

Ideal Candidate
We are looking for someone with strong experience in Power Apps UX/UI design who has built advanced/custom interfaces beyond standard model-driven forms, understands Dataverse architecture, can advise pragmatically on platform limitations, has experience building matrix/grid-style interfaces, and can demonstrate similar previous work.

Additional Information
This is a professional/legal services environment, so usability, scalability, and maintainability are important. We are not looking for a basic form redesign; the requirement is for a more sophisticated operational interface for managing large volumes of registration data efficiently.