Security Engineer – Defend Advanced FinTech Systems, 4-Day Week

XTX Markets, a leading algorithmic trading firm, is seeking an Information Security Engineer to join its hands-on security team in a hybrid UK role. You will collaborate with software engineers to identify security flaws and build defensive solutions, while supporting compliance across the firm’s large-scale operations.

The role emphasizes practical security work, prototyping, and improving detection capabilities in a fast-paced environment with extensive data infrastructure and a purpose-built

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