What You'll Build

Mainframe interface is where portfolio managers running real mandates make real decisions. Dashboard latency matters. Number formatting matters. Animation timing matters. You will own complex data-dense interfaces - order books, P&L attribution screens, multi-account allocation views, real-time portfolio analytics. Aesthetic carries institutional weight, but interaction has to feel sharp like Bloomberg terminal, not slow like enterprise SaaS.

Who Fits

You think about frontend as engineering discipline, not styling layer. You have shipped data-dense interfaces that hold up under real volume. You read network tab before asking backend to optimize. Charts and tables done well excite you more than generic landing pages. You care about details users notice subconsciously - kerning, easing curves, focus states.

Stack Signals

• Deep React with Next.js in production
• TypeScript fluency, not "I can read it"
• WebSocket and Centrifugo flows at scale
• Strong sense for performance budgets under real-time data pressure
• Visualization libraries (D3, TradingView, ECharts) experience welcome
• SSR/streaming/RSC experience meaningful