FIX Onboarding & Client Services

FIX Onboarding & Client Services, EMEA Hybrid, London, UK (3 days per week in-office) | Full-Time About Us Reactive 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…