Front-End Developer (Full-Time, Remote)

Role Overview

Front-End Developer for a full-time, remote role building the user-facing components of a high-performance trading platform. You will collaborate with back-end developers and a project manager to deliver seamless, integrated systems, with an emphasis on discussing approaches and trade-offs.

Responsibilities

• Develop and maintain front-end applications for the trading platform.
• Collaborate with back-end developers and the project manager to ensure smooth integration.
• Design multi-page layouts, menus, and workflows balancing usability and efficiency.
• Contribute to UI/UX for key modules (e.g., performance & risk manager, backtesting engine).
• Implement and optimize charting and data visualization using libraries such as TradingView or D3.js.
• Continuously improve UI clarity, speed, and intuitive navigation.

Required Qualifications

• Strong communication and collaboration with engineering and business stakeholders.
• Ability to translate complex requirements into clean, user-friendly interfaces.
• Core stack: React 18 + Next.js (App Router), TypeScript, Tailwind CSS.
• Strong state management for high-frequency data (e.g., Zustand, Redux Toolkit, useSyncExternalStore).

Real-Time Data & Performance (Required)

• Hands-on experience with WebSockets / SSE, including reconnection/backoff strategies, authenticated connections, and topic re-subscriptions.
• Experience with backpressure/buffering/coalescing/windowing to prevent UI thrash under thousands of updates per minute.
• Data virtualization for large tables (e.g., react-virtualized, react-window).
• Familiarity with Web Workers / OffscreenCanvas and message passing to keep the main thread responsive.
• Awareness of latency budgets and frame-time profiling (React DevTools + browser performance tools).

Charting & Visualization (Required)

• Experience with professional charting libraries (e.g., TradingView Charting Library, Lightweight Charts, Highcharts, D3).
• Ability to build real-time overlays and multi-pane synchronized layouts (e.g., order book depth, OHLCV, annotations, crosshairs, indicators).

Architecture & Data Access (Required)

• Client-side caching and invalidation (e.g., TanStack Query / React Query).
• Schema-driven UI for instruments and venues.
• Use Error Boundaries, Suspense, and progressive hydration/streaming for large Next.js pages.

Auth, Security, and Roles (Required)

• Strong understanding of OIDC/JWT flows (token refresh/rotation) and WebSocket authentication.
• Experience with role-based feature gating (e.g., read-only vs trading permissions).

Testing, Quality, Reliability (Required)

• Unit tests for critical transforms/parsers (e.g., Playwright/Vitest for E2E/interaction flows).
• Feature flags, staged rollouts, and monitoring (e.g., Sentry/OpenTelemetry).

Nice to Have

• Desktop-class layouts (drag-to-dock panels, resizable grids).
• Exposure to WASM for heavy computations (e.g., indicator calculations).
• Familiarity with FIX/crypto venue nuances (tick sizes, lot sizes, trading sessions).