Senior Security and Infrastructure Engineer - Robert Half : Job Details

Senior Cyber & Infrastructure Engineer

Location: Hybrid (London-based)

Sector: Financial Services

Employment Type: Full-Time

A leading financial services organisation is seeking an experienced Senior Cyber & Infrastructure Engineer to play a key role in the evolution of its Microsoft cloud infrastructure and cyber security strategy.

This is an excellent opportunity for a technically skilled and security-focused professional to join a high-performing IT team at the centre of a modern, regulated business. The successful candidate will lead on cloud infrastructure development, security architecture, and risk mitigation - ensuring systems are scalable, secure, and aligned with regulatory expectations.

Key Responsibilities:

• Design, implement and optimise secure, scalable Microsoft Azure and Microsoft 365 infrastructure.
• Manage and enhance the organisation's security posture using Microsoft Defender for Endpoint, Sentinel, Intune, and other Microsoft security tools.
• Lead cloud migration projects and hybrid infrastructure initiatives.
• Maintain robust access controls, including RBAC and Conditional Access, within Azure AD and Microsoft 365.
• Collaborate with Risk and Compliance teams to ensure infrastructure aligns with enterprise security frameworks (e.g. ISO 27001, NIST, CIS).
• Support incident response, vulnerability remediation, and disaster recovery planning.
• Promote a culture of continuous improvement and secure-by-design principles across the technology team.
• Provide technical leadership and mentoring to junior engineers.

Skills and Experience Required:

• 5-8 years of hands-on experience in infrastructure engineering and cyber security, with a focus on Microsoft cloud technologies.
• Demonstrated experience in leading enterprise-level cloud projects and managing hybrid environments.
• Strong technical knowledge of Microsoft Defender, Sentinel, Azure AD, and identity governance.
• Solid understanding of Zero Trust principles, access control policies, and cyber risk management.
• Excellent written and verbal communication skills; able to work collaboratively across technical and non-technical teams.
• Strong documentation and change control capabilities.

Desirable:

• Azure certifications (e.g. AZ-104, AZ-500) and cyber security qualifications (e.g. CISSP, CCSP).
• Experience with scripting/automation, SharePoint Online, ServiceNow, or basic SQL administration.

Qualifications:

• Bachelor's degree in IT, Cyber Security or a related discipline.
• Relevant industry certifications.

This is a key hire within an ambitious, security-conscious organisation where your expertise will directly influence the resilience and integrity of critical technology platforms. The role offers a blend of technical depth, strategic impact, and cross-functional collaboration, along with opportunities for professional development and leadership.

To find out more or express interest, please get in touch.

Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: gb/en/privacy-notice.