Rebuilding trust, driving conversions, and scaling UX across a multi-vertical product embedded in 10+ global banks.

🧭 Snapshot

Company: Nuclei

Role: Lead Product Designer (solo)

Team: 2 PMs, 21 Engineers

Duration: 7 months

Platform: Mobile-first, B2B2C super app embedded inside partner banking apps

Scope: Redesign across 5 high-traffic categories, plus a scalable design system to support 8 total verticals

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Note: Due to NDA constraints, select visuals and details have been limited. Screens shown are carefully curated to respect client confidentiality.

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📍 Problem Statement

After three years of product-led growth, Nuclei’s flagship super app — enabling banks to offer services like travel, shopping, and lifestyle bookings — began to show signs of stagnation.

Despite being embedded in banking apps used by millions:

• Product metrics like daily revenue and funnel completions plateaued
• Visual inconsistency across verticals eroded user trust
• There was no design system, no documentation, and no consistent design–engineering workflow

One of the first challenges I faced was the absence of historical design files or documentation. I had to reverse-engineer flows from live banking apps — a process that exposed just how fragmented and inconsistent the user experience had become. This constraint not only made redesign harder, it also made the need for a scalable, tokenized design system non-negotiable.

Meanwhile, a backend migration to Svelte added urgency to ship efficiently and scale reliably. Key constraints included:

• Inaccessible user data due to strict privacy policies