Open to opportunities

James Martins

@jamesmartins

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I design scalable fintech and SaaS products that improve conversion, retention, and engineering velocity.

Nigeria

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What I'm looking for

I'm looking to own end-to-end product design for fintech, SaaS, or consumer products, partnering closely with product and engineering to build accessible, scalable systems and improve user outcomes.

I've led product design for DubballUp's mobile-first gamified fitness platform, increasing day-7 retention by 28%, and for Byte Business's fintech platform, driving 300% month-over-month growth after launch.

I build production-aligned design systems and responsive interfaces that help teams ship faster. At DubballUp, I created a Figma-to-Framer system with 150+ tokenized components that cut front-end development timelines by 35%; at Wyde Cloud, I maintained a multi-theme library with 100% WCAG accessibility compliance.

I work closely with product and engineering teams to turn complex requirements into clear user flows, prototypes, and validated experiences. My process combines usability testing, behavioral analysis, A/B testing, and AI-powered design workflows to improve products from research through delivery.

Experience

Work history, roles, and key accomplishments

Lead UI/UX Design Engineer

DubballUp

Apr 2024 - Jan 2025 (9 months)

Led end-to-end product design strategy for a mobile-first gamified fitness platform, increasing day-7 user retention by 28%. Built a modular Figma-to-Framer design system with 150+ tokenized components, cutting front-end development timelines by 35%.

Figma Framer Design Systems Prototyping Usability Testing User Research Product Strategy Responsive Design