Security Operations Engineer (Contract)A Global Financial Services Firm is seeking a Contract Security Operations Engineer with strong AWS experience, focused on tuning SIEM platforms and ensuring log sources are properly onboarded and optimised. Day Rate: £400-£425 per dayIR35: OutsideDuration: 3 monthsLocation: Central London (3 days onsite, 2 days WFH) Key Experience Required: Leading SIEM engineering activity, including tuning detections, onboarding critical log sources, and defining effective logging requirements across cloud environments.Supporting incident response efforts while working autonomously and proactively identifying areas that require security attention.Strong, hands-on experience in AWS (essential), along with exposure to cloud-native architectures and modern DevOps/CI/CD practices.Skilled in using and optimising CrowdStrike, with broad SIEM expertise; Datadog SIEM experience is highly advantageous.