Based is hiring a senior software engineer for HyENA (L4/5 support + high performance React). You will join a world-class team of builders that ships at exceptional speed.

If you are interested in performance optimization, real time systems, and high throughput trading interfaces, there is no better place to work. Compensation and personal growth reflect the bar. The role is demanding and expectations are high.

Requirements:
• Strong engineering fundamentals and raw execution speed
• Deep React performance expertise (profiling, Fiber, reconciliation, virtualization, throttling)
• Experience with real time data (WebSockets, market feeds)
• Ability to debug end to end (UI → WS/API → backend)
• High responsiveness and composure under pressure
• Weekend availability for critical production incidents
• Singapore preferred (GMT+8 remote acceptable)

JD and application: https://based.one/careers

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