FIX Onboarding & Client Services, EMEAHybrid, London, UK (3+ days per week in-office) | Full-TimeAbout UsReactive Markets is the 2026 OTC Trading Platform of the Year (Risk.net). Our network handles billions in daily trading volumes across FX, Equities, and Cryptocurrency, connecting 35+ of the world's leading liquidity providers.We build trading systems that operate at the edge of what's technically possible — where nanoseconds matter and a dropped message costs real money. Our engineering
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£45,000 – £60,000 (Glassdoor, Levels.fyi, 2025)
