Senior IT Infrastructure Administrator, Security

Overview

Confluence is a global investment data technology organization operating across multiple countries. The Senior Infrastructure Security Engineer works within the IT Infrastructure team and partners closely with Cybersecurity to improve security delivery across enterprise Windows and Linux environments.

Key Responsibilities

• Take direct ownership of vulnerability remediation, reduce backlog, and improve mitigation at scale.
• Improve patching cadence, configuration hygiene, and secure operational practices across infrastructure environments.
• Administer and harden Windows Server environments (Active Directory, Group Policy, DNS, authentication, certificate services) and support Linux administration.
• Support certificate lifecycle management, including TLS/PKI renewals and ongoing certificate operations.
• Work with core security platforms such as PAM solutions and Cloudflare, and support logging and monitor...