Senior Software Engineer (React)

Company: Twelve
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Job Description:

A global engineering organization is hiring for a Software Engineer (Frontend Focus) to lead the development of high-fidelity interfaces for a high-volume transactional platform. This is a 0→1 project centered on building low-latency, mission-critical trading experiences designed to handle millions of daily events.

The engineering culture is AI-native, utilizing modern tools to drive development velocity while maintaining the rigorous standards required for real-money financial environments.

What This Role Involves

  • ️ Interface Architecture: Translating complex technical requirements into maintainable UI components using Next.js and React at a senior level.
  • ⚡ Real-Time Systems: Designing and optimizing event-driven frontends that handle live data updates via WebSockets and Server-Sent Events (SSE) with minimal latency.
Posted: April 5th, 2026