Premium B2B App & Admin Platform

I am looking for an experienced UI/UX designer and app developer to build a premium B2B mobile app for OFF SCRIPT GROUP, with iOS and Android versions and a web-based admin dashboard. Our company has five divisions: 1. BRANDS — Showcase our brands and receive distributor or stockist applications. 2. SOURCE — Customers submit sourcing and manufacturing requests, including product references, quantities, specifications and file uploads. 3. DESIGN LAB — Showcase our portfolio and accept briefs for brand identity, packaging and product design. 4. DISTRIBUTION — Wholesale product catalogue where customers select products and quantities and submit orders. 5. INVESTMENT — Present partnership opportunities and receive confidential business proposals and pitch decks. Main features: • A polished homepage introducing the group and its five divisions. • Customer registration, login and company profiles. • Product catalogues with images, specifications and search/filter options. • Order submission and repeat orders. • A private customer area to track orders and projects, view updates, download documents and approve designs. • Email and WhatsApp contact buttons for each division. • Notifications for project updates and approval requests. • An admin dashboard to manage products, customers, enquiries, orders, projects, files and access permissions. Important: This is a B2B platform. Do not display product prices or include online checkout/payment processing. Customers submit orders or enquiries through the app; our team confirms details, quotations and payments through email or WhatsApp. Design direction: premium, modern and distinctive, using black, ivory and electric blue. Our existing OFF SCRIPT logo must remain unchanged. I have visual references to share. Please quote separately for UI/UX design and development, with clear milestones. Include your proposed technology, timeline, relevant portfolio, ongoing running costs and maintenance options. The deliverables must include editable design files, full source code, documentation and assistance publishing under our company’s Apple and Google developer accounts.