I build digital products where engineering precision meets design thinking. Based in Melbourne, I specialize in creating interfaces that people genuinely love using, from payment systems processing millions of transactions to gesture-driven mobile trading experiences.

At Tyro Health (4+ years), if you've tapped your phone to pay at a healthcare clinic in Australia, you've likely used software I built:

• Led payment experiences processing millions of monthly transactions (Apple Pay, Google Pay, card payments)
• Rebuilt legacy UI component library with Tailwind CSS, accelerating delivery by 40%
• Contributed to $500,000+ in business savings through seamless payment migration
• Designed accessibility system for point-of-sale devices through user research with people with disabilities
• Maintained Health SDK enabling 1M+ monthly invoice processing

As a contractor, I've helped startups ship mobile and web products from concept to launch:

• Built complete mobile trading app as sole frontend engineer at Mythic Labs, creating AI-native UX with gesture-based trading and real-time WebSocket streaming
• Architected swipe-to-trade execution with sub-second Solana transactions
• Improved Lighthouse scores by 25% through performance optimization at PLAYA3ULL GAMES
• Created real-time trading platforms integrating AI chat, live charts, and DeFi infrastructure

My work sits at the intersection of engineering and design. I approach every project with both technical precision and a designer's eye for details that make interfaces feel effortless, from prototyping and user flows to accessibility and visual polish.

Languages & Frameworks: TypeScript, React, Next.js, React Native Styling & UI: Tailwind CSS, Responsive Design, Accessibility (WCAG) State & Data: Zustand, React Query, WebSocket, Real-time Systems Performance: Lighthouse Optimization, Lazy Loading, Code Splitting Testing: Vitest, React Testing Library, Playwright Tools: Git, Vite, ESLint, Prettier, pnpm, Turborepo, Nx Blockchain: Ethereum, Solana, Web3 Wallets (Privy), DeFi Integrations

• LinkedIn: linkedin.com/in/joshuasmithdev
• X (Twitter): @JoshSmithBuilds

Certifications: Professional Diploma in UX Design | Certified Ethereum Expert | Certified Solidity Developer | ICT40120 Certificate IV in IT (Web Development)