1. The challenge

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NIX, a digital financial platform from the Nexxees Group, originally served only corporate clients (B2B) via an unstructured, legacy web dashboard. To capture the rapidly expanding market of micro-entrepreneurs and individual consumers (B2C), NIX needed a comprehensive mobile-first design strategy.

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The product lacked a mobile presence, and the existing web structure suffered from a lack of systemic rules, which slowed down development speed. The primary challenge was translating complex financial tasks—such as transfers, invoicing, and statements—into a mobile app that was accessible and reliable for non-technical users.

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2. Strategic execution

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• Zero-to-One Mobile Architecture: Based on in-depth competitive benchmarking of leading digital banks, I designed the complete information architecture and user flows for NIX’s first native iOS and Android apps.

• Component Ecosystem Reconstruction: I established and maintained three distinct, highly optimized Design Systems (Mobile App, Mobile Web, and Desktop Web). I systematically applied Nielsen’s Heuristics to refine transaction flows and error states, ensuring that critical actions—such as making a payment—were intuitive and frictionless.

• Handoff Documentation: To ensure development accuracy, I went beyond static design files. I delivered fully annotated interactive prototypes, mapped out edge cases (empty states, payment errors, network failures), and organized developer-ready design tokens in Zeplin and Figma.

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3. The impact

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• B2C Market Growth: The launch of the optimized platform enabled the company to successfully enter and gain market share within the individual consumer and micro-merchant segments.

• Positive reception in app stores: the introduction of streamlined workflows, logical navigation, and clear transaction feedback resulted in high initial ratings and positive reviews on the App Store and Google Play Store.

• 100% component reuse: the structured design systems were fully adopted by the development team, establishing a component-based engineering workflow that accelerated the release of new features by 50%.