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Cash App

Expanding Cash App’s Reach & Innovating Payment Features

After the successful launch of Cash App UK, our team focused on expanding into Australia and South America while introducing new payment and shopping experiences. I played a key role in designing global-first payment flows and enhancing international user experiences.

πŸ“Œ My Role:

β€’ Developed Multi-Currency Payment Flows, supporting cross-border transactions.
β€’ Explored Shopping Experiences, identifying opportunities for in-app commerce.
β€’ Led Localization & UX Strategy, ensuring intuitive, region-specific experiences.
β€’ Optimized design-engineering workflows, improving efficiency and execution speed.

πŸ“Œ Key Impact:

β€’ 🌍 Expanded Cash App’s global reach, adapting UX for new markets.
β€’ πŸ’± Developed multi-currency support, enabling seamless global payments.
β€’ πŸͺ Explored shopping within Cash App, laying the foundation for future commerce.
β€’ 🎨 Refined localization strategy, improving adoption and ease of use.
β€’ πŸ›  Strengthened cross-functional collaboration, accelerating delivery.

πŸš€ My work helped drive Cash App’s global expansion while enhancing the way users transact and interact within the platform.

Role: Principal Product Designer

Project: iOS & Android App Design

Year: 2021 – 2022

Understanding the Challenge

As Cash App expanded globally, we needed to:

βœ” Streamline cross-border payments for seamless international transactions.

βœ” Design localized experiences for users in the US, UK, Australia, and South America.

βœ” Ensure compliance with financial regulations while keeping the UX simple and intuitive.

A key challenge was balancing multiple currencies, financial policies, and user expectationsβ€”ensuring a frictionless, consistent experience across different regions.

Designing International Payment Flows

To enable seamless global transactions, I helped design and refine:

πŸ’³ Faster & More Intuitive Payment Options

β€’Designed QR code payments, making in-person transactions instant and hassle-free.

β€’Developed multi-currency flows, allowing users to send, receive, and convert money across different regions.

πŸ”„ Seamless Currency & Fee Transparency

β€’Improved currency conversion displays, ensuring users understood real-time exchange rates and fees.

β€’Designed clearer transaction summaries, reducing drop-offs at payment confirmation screens.

πŸš€ Impact:

βœ… A smoother, more transparent international payment experience.

βœ… Increased user confidence in global transactions, improving retention and engagement.

Expanding Localization: Learnings from Cash App UK & Australia

Following the successful launch of Cash App UK, we leveraged key learnings to expand into Australia and South America:

β€’ Adapted legal disclosures, currency formats, and financial regulations for each region.
β€’ Localized messaging and UI elements, ensuring cultural and language familiarity.
β€’ Conducted market-specific usability tests, identifying unique regional pain points.

πŸš€ Impact:

βœ… Higher adoption rates in international markets due to localized UX.
βœ… Improved accessibility, ensuring global users could onboard and transact seamlessly.

Streamlining Collaboration Between Design & Engineering

To accelerate development and ensure design consistency across all platforms, I worked closely with engineers to:

⚑ Reduce Iteration Cycles

β€’ Introduced more efficient design handoff processes, reducing friction between design and engineering.
β€’ Created component-based design systems, allowing for faster iterations and updates.

🎯 Optimized Internal Workflows

β€’ Developed detailed design documentation, reducing back-and-forth between teams.
β€’ Ran weekly design-engineering syncs, ensuring alignment and rapid iteration.

πŸš€ Impact:

βœ… Faster execution, smoother collaboration, and a scalable design foundation for future iterations.

What This Project Achieved

πŸ“Š Business Impact:

βœ” Enabled Cash App’s global expansion, ensuring payment flows were market-ready.
βœ” Improved cross-border transaction UX, reducing friction for international users.
βœ” Designed new features that laid the groundwork for future commerce integrations.

🎯 Customer Experience Improvements:

βœ” Faster, more intuitive payment flows, reducing friction in cross-border transactions.
βœ” Higher adoption rates in international markets due to localized experiences.
βœ” Improved transparency in fees & currency conversion, building user trust.

Reflections & Learnings

Leading this project reinforced the importance of:

✨ Designing for scale – Creating a globally adaptable UX required flexibility and modularity.
✨ Balancing compliance & usability – Financial regulations varied, but the experience needed to remain intuitive.
✨ Exploring beyond payments – Shopping research highlighted new opportunities for product growth.

πŸš€ By designing seamless payment experiences and exploring new possibilities, my work helped Cash App expand its reach and enhance financial accessibility for millions of users.

Next case study | Money By Afterpay πŸ’΅

Β© Julio Castellano