Senior Information Security Analyst

Salary: £45,000 - 85,000 per year

Requirements:

• Suitable experience in an Information Security role.
• Previous relevant experience in a technical IT role such as System Administration, Network Administration, or DevOps.
• 4 to 8 years of suitable experience is likely to provide the right level of knowledge and experience.
• Cybersecurity certification(s) such as CISSP, Sec+, CCSP, or CEH, or equivalent.
• Knowledge of security frameworks and regulatory compliance standards such as NIST CSF, SOX ITGC, and GDPR.
• Working technical knowledge and hands-on experience securing enterprise IT environments, primarily within Windows-based and cloud-hosted ecosystems.
• Experience applying Zero Trust security principles across identity, endpoint, and access domains.
• Demonstrated experience in incident response, threat detection, vulnerability management, and securing workloads at enterprise scale.
• Strong ability to analyze, prioritize, and respond to security alerts and vulnerabilities in line with business operations and risk tolerance.
• Experience with incident response processes and best practices, including investigation, escalation, and documentation.
• Knowledge of cloud security principles, particularly within Microsoft Azure environments.
• Strong written and verbal communication skills, including the ability to document findings and risks clearly for technical and non-technical stakeholders.
• Commitment to continuous learning and staying current with emerging threats, technologies, and industry trends.
• Bachelors degree in information security or a related field, or an equivalent combination of education and experience is desirable but not essential.

Responsibilities:

• Monitor, triage, and investigate security alerts in coordination with the Security Operations Center and internal teams.
• Analyze and validate potential security incidents, ensuring accurate classification, documentation, and escalation.
• Perform daily operational information security tasks, including managing and resolving ServiceNow incidents assigned to the Information Security team.
• Support incident response efforts through investigation, coordination, and detailed documentation of findings.
• Participate occasionally in an on-call rotation to support timely response and escalation of security incidents outside business hours, including handover and continuity of incident management.
• Tune and optimize security tools, including SIEM and endpoint protection platforms, to improve alert fidelity and reduce false positives.
• Collaborate with internal technology teams to ensure appropriate logging, monitoring, and alerting capabilities are in place across systems.
• Work with the IT Service Desk, Operations, and development teams to support vulnerability identification and ensure remediation is prioritized and delivered within agreed SLAs.
• Work with global and regional stakeholders to support consistent security operations and incident handling across time zones.
• Support security awareness initiatives through training, workshops, and knowledge-sharing activities.
• Partner with the global Information Security team to review, streamline, and develop security processes, procedures, and incident response playbooks.
• Maintain accurate, current documentation aligned with approved standards.
• Promote a culture of security across the organization through engagement and collaboration.
• Perform other duties as assigned.

Technologies:

• Azure
• Cloud
• DevOps
• Incident Management
• Support
• Network
• Security
• ServiceNow
• Windows

More:

We are Realty Income (NYSE: O), an S&P 500 real estate investment trust and a leading partner to some of the worlds largest companies. Founded in 1969, we invest in diversified commercial real estate and manage a portfolio of 15,600 properties across all 50 U.S. states, the UK, and six other European countries, with a gross book value of $58bn. Known as The Monthly Dividend Company, we have declared 656 consecutive monthly dividends and have increased our dividend for 30 consecutive years as part of the S&P 500 Dividend Aristocrats index. We are rapidly expanding across the UK and Europe and are moving into new offices at 3 St. Jamess Square in London. This global role offers the opportunity to join a growing Info Sec team, broaden your experience, and take on additional responsibility in a hybrid working arrangement, with the office required Monday through Thursday. We are committed to diversity and inclusion and welcome applicants from all backgrounds.

last updated 34 week of 2026