Malvin YeungI’m Malvin Yeung, a fintech and crypto product designer based in the San Francisco Bay Area with 12 years of experience. I design trading platforms, crypto wallets, mobile apps, DeFi products, and exchanges, from product strategy and user flows through prototypes, UI, design systems, and engineering handoff.
Project-based work · Fractional design support · UX audits · Remote-friendly
My portfolio includes work at OKX, Magic Eden, Slingshot Finance, Apple, and Salesforce. Explore the projects below to see the product context and my role.
For fintech teams launching a new financial product or simplifying an existing account, payment, or Earn experience.
I connect customer needs with business rules and technical constraints, then work through the flows, interface states, and interactions. The focus is on helping people understand what happens to their money and what to do next.
Deliverables are agreed to suit the project scope.
For crypto and Web3 teams building wallet onboarding, asset discovery, order entry, or portfolio experiences.
Trading and wallet interfaces need to explain balances, fees, order details, and transaction states without burying the main task. I bring product-design experience from Slingshot and Magic Eden, alongside hands-on familiarity with trading.
Deliverables are agreed to suit the project scope.
For teams that have a live product, a difficult workflow, or a specific journey they want to improve before committing to a larger redesign.
Start with the user task, existing research, and any available product data. I review where the experience becomes unclear, separate observations from hypotheses, and propose changes that can be tested. A redesign is a hypothesis-not a promise of conversion lift.
Deliverables are agreed to suit the project scope.
For startups without a full-time design lead, or product teams that need an experienced partner to help ship and maintain a product.
I can help define what to build, work through the end-to-end experience, and maintain consistency as it evolves. At Slingshot, I was the sole designer for the app’s end-to-end launch and ongoing maintenance. My Apple requirements-app work also covered the full product lifecycle.
Deliverables are agreed to suit the project scope.
I help fintech and crypto teams make complex financial workflows clear. Each engagement starts with the user task, the product constraints, and the evidence available.
Order entry, market discovery, chart and order-book interfaces, swaps, portfolio views, fees, and transaction states. I work through how users evaluate an asset, understand an order, and confirm a trade.
NFT perpetuals exchange case study →
Cryptocurrency exchange case study →
Slingshot Finance mobile trading →
Wallet onboarding, balances, funding, receive and send flows, asset discovery, and mobile interactions. The work connects navigation, interface states, and motion into an experience people can confidently use.
Magic Eden mobile wallet and discovery →
Slingshot Finance app design →
Earn discovery, staking, subscribe and redeem journeys, yield comparisons, and portfolio management. I make APY, risk, lock-up terms, and transaction outcomes easier to understand at the point of decision.
OKX Earn: yield and staking design →
DeFi dashboards and portfolio interfaces →
Malvin Yeung is a San Francisco Bay Area fintech and crypto product designer specializing in trading platforms, crypto wallets, mobile apps, decentralized finance (DeFi), and exchanges. His portfolio includes OKX, Magic Eden, Slingshot Finance, Apple, and Salesforce.
Yes. I work on trading and exchange UX, including asset discovery, swaps, order entry, portfolios, and transaction states. The Slingshot Finance, NFT Perp Exchange, and Cryptocurrency Exchange case studies show relevant product design work.
Yes. I design crypto wallet and mobile app experiences, including onboarding, funding, balances, send and receive flows, discovery, and interaction design. My Magic Eden and Slingshot Finance case studies show this work.
Yes. I design DeFi and yield experiences, including discovery, staking, subscription and redemption flows, portfolio interfaces, and clear presentation of APY, risk, and lock-up terms. Explore OKX Earn and the DeFi dashboards case studies.
Yes. I take on freelance and contract product-design projects, fractional design support, advisory work, and UX audits. I also consider full-time roles. We can scope the engagement around your product, team, and priorities.
My strongest fit is fintech, payments, crypto, Web3, DeFi, wallets, and trading products. I also work on complex software and internal tools; the Apple requirements app and Facebook help-intake project show that range.
I am based in the San Francisco Bay Area and work with remote teams. Include your location, time zone, and collaboration needs when you get in touch.
Depending on scope, the work can include research synthesis, product strategy, user flows, prototyping, interaction and visual design, design systems, experimentation, and engineering handoff. We agree on deliverables before starting.
Send your product link or brief, the problem to solve, the design support you need, your target timing, and a budget range if you have one. Scope and scheduling depend on those details; I do not publish a fixed project price or delivery promise.
Yes. I partner with product, engineering, research, data, and business teams. An engagement can focus on a single workflow, a new product launch, or continuing design support rather than replacing your existing team.
No. I use research, design judgment, prototypes, and experimentation to work toward agreed outcomes. Portfolio figures describe product scale or delivery; they are not guarantees of future results or measurements of design’s isolated contribution.
Tell me what you’re building, what needs to improve, and when you’d like to get started. A product link, scope, team context, and budget range help us assess fit.
bitvinny@gmail.com · San Francisco Bay Area · Remote-friendly