Senior Security Engineer

We are partnering with a global, technology-led investment business to hire a Senior Security Engineer into a highly experienced engineering environment. This is a senior individual contributor role for someone who wants to remain genuinely hands-on while having significant technical influence. You will own security initiatives end to end, from discovery and architecture through implementation, production operation and continuous improvement. This is an opportunity to take real ownership of complex security engineering problems in an environment where technology, reliability and performance genuinely matter. Responsibilities: <ul data-editing-info="{"applyListStyleFromLevel":false,"unorderedStyleType":2}"> - Lead major security engineering initiatives across teams and regions. - Design, build and operate controls spanning identity and privileged access, endpoint, cloud, on-prem infrastructure, data protection and monitoring. - Identify attack paths and weaknesses, assess their real-world risk and drive practical remediation. - Automate security infrastructure and operations using APIs, scripting, infrastructure as code, version control, testing and CI/CD. - Own security services in production, including monitoring, resilience, upgrades, recovery, incident response and on-call support. - Set technical direction and engineering standards, balancing security, reliability, performance and operational cost. - Work closely with Security, Infrastructure, IT and software engineering teams. - Mentor engineers and act as a senior technical escalation point. Requirements: You'll bring substantial security engineering experience from a complex enterprise or similarly demanding technology environment, together with: <ul data-editing-info="{"unorderedStyleType":2,"applyListStyleFromLevel":false}"> - Deep practical expertise across several areas such as IAM/PAM, endpoint or cloud security, infrastructure hardening, secrets management, PKI, data protection or detection engineering. - Strong knowledge of Windows, Linux, Active Directory, modern identity, networking and authentication. - The ability to operate at both architecture and implementation level. - Strong automation and software engineering practices applied to security. - Experience owning critical services in production, including troubleshooting complex incidents. - The communication skills to influence senior technical stakeholders and drive cross-team delivery. - A willingness to stay hands-on while providing technical leadership and mentoring.