Senior System Developer - Walley
Are you a senior web designer focused on mobile-first UX? A challenger bank is looking for a consultant for a 3-month assignment from October to December 2026. About the assignment The client is strengthening their B2B mobile web experience. Mobile carries the majority of B2B leads, but key templates currently lack dedicated mobile patterns and complete interaction states. Your mission is to strengthen the existing foundation of four core page templates (Homepage, Pricing, Company Type, Product Page) and the underlying UI system for mobile width, as well as create a dedicated mobile pattern for pricing and comparison content. Requirements Senior expertise in mobile-first web design across UI and UX. Proven track record of designing high-converting web pages. Strong information architecture capable of handling dense pricing and comparison content. Experience with modular CMS environments such as Sanity or similar. Component and interaction state discipline covering hover, pressed, focus, loading, empty, and error states. Portfolio demonstrating: A mobile module or component system with documented interaction states. A clear before and after case with a proven commercial outcome. Fluent in English. Nice to have: B2B background in Nordic or European fintech or SaaS, data-driven design (GA4, Hotjar), motion or 3D skills, Danish or Swedish. Practical details Duration: 3 months (October to December 2026) Location: Stockholm, Malmö, or Copenhagen (hybrid, travel required)
Experience required