Senior Security Engineer

The role

This senior individual contributor role involves owning complex security challenges across a global environment. You will combine hands-on engineering, technical leadership, mentoring, and operational responsibilities.

What you will do

• Own security initiatives from discovery and design through delivery and ongoing operation.
• Set technical direction and engineering standards.
• Build and improve controls across identity, endpoints, cloud, on-premises infrastructure, data protection and security monitoring.
• Identify security weaknesses and attack paths and deliver practical remediation.
• Automate deployment and operations through APIs, scripting and infrastructure as code.
• Deliver resilient, supportable services with effective monitoring, runbooks and recovery procedures.
• Share responsibility for maintenance, support and troubleshooting.
• Participate in the security on-call rota.
• Lead complex incident troubleshooting and follow through on corrective actions.
• Partner with Security, Infrastructure, IT and development teams to integrate controls.

Required qualifications

• Substantial security engineering experience in complex enterprise environments.
• Deep practical expertise in several relevant security domains, such as identity, privileged access, endpoint or cloud security, infrastructure hardening, secrets management, PKI, data protection or de
• Strong understanding of Windows, Linux, Active Directory, modern identity platforms, networking, authentication and hybrid infrastructure.
• Ability to work at both architecture and implementation level.
• Strong automation skills and experience using version control and delivery pipelines.
• Experience operating reliable production services, including upgrades, configuration management, monitoring, resilience and recovery.
• Sound risk judgement, clear communication and the ability to influence stakeholders, resolve dependencies and deliver under ambiguous requirements.
• Experience mentoring engineers and providing senior technical support during incidents and in an on-call environment.

Nice to have

• Experience or a willingness to learn in quantitative trading, financial services or other environments with demanding availability and performance requirements.
• Security services spanning multiple regions, clouds and data centres, including migration from legacy platforms.

Benefits

• Initiatives and programmes to enable employees to achieve a healthy work-life balance.

About the company

QRT is a global quantitative and systematic investment manager, operating across all liquid asset classes. It is a data- and technology-driven organization applying scientific methods to investing.