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Vitali Zahharov, Product Designer.  
Los Angeles, CA.

Work (Double Finance), Archive, About, Contact

Company
Double Finance
Year
2024—2025
WebsiteArchived
Type
Full-time employee
Service
Product, Design System, Marketing, UX, Interface, Mobile
Area
Consumer, B2C, Fintech
Role
Lead Product Designer

Case Study #04




About Double is creating a smarter brokerage account for retail investors, blending the best aspects of active and passive investing.

I was hired as the first in-house designer and joined the startup before they secured their $3M Series A funding. Initially, I worked as a contractor for three months before I’ve transitioned myself from O-1 visa depended visa to EB-1, and became full-tiem employee.
Problem Since it’s an early-stage startup, Double had only one global problem that I was hired to solve—making the investment tool much more easier for users to understand.
Approach First of all, develop a comprehensive design system that seamlessly integrates across the entire platform, including mobile as well. Refine the UX to simplify complex interactions and enhance usability.

Design a responsive mobile experience for seamless accessibility. Develop and create compelling marketing materials to elevate the startup's presence on social media.
Design SystemSystems aren’t built overnight—they require continuous testing, iteration, and refinement. 

Every system evolves through multiple updates and improvements, demanding careful attention from designers to ensure it remains effective, intuitive, and user-friendly.


See the Double’s Design System
OnboardingAfter our first beta launch we received a lot of feedback from real users, investors and partners. 

Some way we did that - doesn’t work for most of the people, some of users don’t udnerstand how to use our platform. They were struggle to understand what to do after signing up, making it a bit complicated to get started, for us that’s mean loss. Our primary goal is to encourage users to deposit funds and start trading.  This structured flow ensures users know exactly what to do, reducing friction and increasing engagement.Reduced user confusion, increased engagement, and doubled deposits.
MobileAs Double continues to grow, users are increasingly requesting mobile access. 

Now that the core app is established, our developers and designers have collaborated to create a seamless and intuitive mobile experience.
DetailsEvery detail counts. Each element should be pixel-perfect and function as seamlessly as it looks—because great products are built through constant refinement and improvement.
MarketingMarketing isn’t just about pretty visuals—it’s about storytelling. It’s how you show users why they should love your product. 

Today’s users are busy; they don’t have time to read long ads or explore an app from a brand they don’t know. 

You have only a few seconds to capture their attention—that’s the essence of marketing. Be fresh, bold, and creative!
AUM
$25M
 Users per month
~250
Built MVP in
3 months
Average spending per users
~$2k per month
Double scalled from $0 AUM to nearly $25M, from 0 users to more than ~250, average investment per users is nearly $2k, and still growing.I helped Double attract new users through social media ad campaigns while also improving key features like the Trading Optimizer and Pre-Built Strategies Marketplace.

Additionally, I contributed to securing $3M in Series A funding and played a role in Double being recognized as the #2 Product of the Week on Product Hunt.

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