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About the Role

This senior technical role combines infrastructure engineering, solution design, and operational leadership, focusing on technical ownership and engineering quality to ensure secure, reliable, scalable, and cost-effective cloud, on-premises, and workplace platforms.

Responsibilities

• Act as the senior technical owner for the organization's infrastructure and core platform services.
• Design, configure, maintain, and improve cloud infrastructure.
• Provide hands-on support for complex incidents, performance issues, and infrastructure failures.
• Perform root-cause analysis and implement permanent technical solutions.
• Maintain the stability, security, and performance of production environments.
• Provide technical guidance and mentoring to other members of the IT team.
• Administer and enhance Microsoft Azure, Microsoft 365, and associated cloud services.
• Configure and support identity, authentication, and access services, including Microsoft Entra ID.
• Manage core services such as compute, storage, backup, collaboration, and endpoint-management platforms.
• Implement appropriate monitoring, alerting, security, and cost controls across cloud environments.
• Support the integration of Software-as-a-Service applications with the organization's identity and security services.
• Identify opportunities to simplify the environment and make effective use of cloud-native capabilities.
• Automate routine infrastructure administration, deployment, and reporting activities.
• Develop and maintain scripts and infrastructure-as-code templates where appropriate.
• Reduce manual configuration and improve the consistency and repeatability of technical changes.
• Maintain clear version control, testing, and documentation for infrastructure automation.
• Continually identify opportunities to improve reliability and operational efficiency.
• Translate business and project requirements into secure, supportable technical solutions.
• Produce solution designs, implementation plans, configuration standards, and technical documentation.
• Lead the technical implementation of infrastructure upgrades, migrations, and new services.
• Review proposed solutions to ensure they meet architectural, operational, and security requirements.
• Ensure new services are fully documented, monitored, backed up, and supportable before entering production.
• Contribute practical technical expertise to wider transformation and change programs.
• Provide technical oversight of LAN, WAN, wireless, internet, and remote-access services.
• Work directly with managed network providers to diagnose incidents and implement changes.
• Review network configurations, designs, and performance information to ensure services meet business and security requirements.
• Validate work completed by service providers and challenge proposed solutions where necessary.
• Maintain sufficient internal technical knowledge to ensure effective control of outsourced network services.
• Apply security-by-design principles to infrastructure configurations and technical solutions.
• Work closely with the Head of Cybersecurity, Information Security to implement vulnerability remediation, secure configuration, and access controls.
• Support compliance with relevant frameworks and standards, including ISO 27001, NIST 800-53, NIST 800-171, CmmC, Essential Eight, and Cyber Essentials Plus.
• Maintain effective patching, hardening, privileged-access, and configuration-management practices.
• Assist with security assessments, audits, and the implementation of agreed corrective actions.
• Ensure technical changes follow appropriate security and change-control processes.
• Monitor and report on infrastructure availability, capacity, and performance and take action before issues affect users.
• Maintain and test backup, recovery, and disaster-recovery arrangements.
• Participate in business-continuity exercises and implement lessons identified through testing.
• Improve platform resilience by identifying and addressing single points of failure.
• Provide senior technical support during major incidents and service-restoration activities.
• Maintain accurate technical documentation, infrastructure inventories, and configuration records.
• Monitor product lifecycles and proactively address ageing or unsupported technology.
• Plan and deliver platform upgrades, replacements, and technical-debt remediation.
• Ensure infrastructure licenses, subscriptions, and resources are appropriately allocated and cost-effective.
• Contribute to a practical infrastructure roadmap based on risk, supportability, and business need.
• Work closely with managed service providers and technology suppliers on incidents, changes, and improvement activities.
• Hold suppliers accountable for technical quality and agreed service outcomes.
• Review supplier recommendations and validate that proposed solutions are appropriate and cost-effective.
• Collaborate with project managers, security specialists, application teams, and business stakeholders.
• Communicate technical risks, options, and recommendations clearly to both technical and non-technical audiences.

Requirements

• Significant hands-on experience in infrastructure engineering, technical operations, or platform services.
• Strong practical knowledge of Microsoft Azure and Microsoft 365 and SaaS tooling and services.
• Experience administering identity and access services, preferably Microsoft Entra ID.
• Strong knowledge of cloud and hybrid infrastructure, including compute, storage, backup, and networking.
• Experience troubleshooting complex infrastructure, authentication, connectivity, and performance issues.
• Practical experience implementing infrastructure upgrades, migrations, and platform improvements.
• Experience using scripting or automation technologies such as PowerShell and infrastructure-as-code tooling.
• A good understanding of networking concepts, including routing, switching, DNS, DHCP, firewalls, VPNs, and secure remote access.
• Experience with monitoring, patch management, vulnerability remediation, and secure configuration.
• Knowledge of disaster recovery, backup, and business-continuity practices.
• Experience working within change, incident, and problem-management processes.
• Experience collaborating with managed service providers and specialist technology suppliers.
• An understanding of security frameworks such as ISO 27001, CMMC, NIST, Essential Eight, or Cyber Essentials Plus.
• The ability to produce clear technical designs, implementation plans, and operational documentation.
• Relevant Microsoft, cloud, networking, or security certifications would be advantageous, but equivalent practical experience is equally valued.

Skills

• Technical ownership
• Infrastructure engineering
• Solution design
• Operational leadership
• Cloud infrastructure management
• On-premises infrastructure management
• Workplace platform management
• Microsoft Azure administration
• Microsoft 365 administration
• SaaS tooling and services
• Identity and access services administration
• Microsoft Entra ID
• Compute management
• Storage management
• Backup management
• Collaboration platform management
• Endpoint management
• Monitoring and alerting
• Security controls implementation
• Cost controls implementation
• Infrastructure automation
• Scripting (e.g., PowerShell)
• Infrastructure-as-code tooling
• Version control
• Testing
• Documentation
• Networking concepts (routing, switching, DNS, DHCP, firewalls, VPNs)
• Secure remote access
• Patch management
• Vulnerability remediation
• Secure configuration
• Disaster recovery
• Business continuity
• Change management
• Incident management
• Problem management
• Supplier collaboration
• Technical risk communication
• Root-cause analysis
• Security-by-design principles
• Compliance frameworks (ISO 27001, NIST, CMMC, Essential Eight, Cyber Essentials Plus)
• Lifecycle management
• Asset management
• Configuration management
• Technical debt remediation
• Infrastructure roadmap development
• Problem diagnosis
• Building secure infrastructure
• Building resilient infrastructure
• Building supportable infrastructure
• Automating repetitive work
• Improving operational consistency
• Explaining technical risks and options in business language
• Constructive supplier challenging
• Validating supplier work quality
• Balancing security, reliability, user experience, and cost
• Sharing technical knowledge
• Raising engineering standards

Location

• Global operations

Work Type

• Hybrid environment

Experience Level

• Experienced
• Senior technical role

Benefits

• 27 days holiday per year
• Pension contributions
• Private healthcare
• Discounted dental insurance
• Enhanced maternity/parental leave
• Cultural stimulation allowance - £250 per person per year
• Half days off before bank holidays
• Emergency care days for dependants
• Up to 5 days volunteering leave per year
• Up to 10 days special emergency leave per year
• Season Ticket loan
• Payroll Giving Scheme
• Thursday drinks
• Annual Summer party
• Annual Christmas party
• Inclusive bank holidays
• Learning opportunities around D&I
• Targeted mentoring programmes
• Opportunity to participate in Employee Led Networks and associated events
• Personal development support

About the Company

• M&C Saatchi Group is a creative company that connects specialist expertise, fuelled by data, technology, and culture, to help clients navigate, create, and lead meaningful change.
• The Group operates across five core divisions: Connected Creativity; Passion Marketing; Global & Social Issues; Brand, Experience & Innovation; and Performance Media.
• Headquartered in London, operations span 23 countries with major hubs in the UK, Europe, US, Middle East & Africa, Asia and Australia.
• M&C Saatchi Group’s two principles, Diversity of Thought and Brutal Simplicity of Thought, guide how they build teams and solve problems.

Equal Opportunity

• M&C Saatchi Group is an Equal Opportunity Employer which does not discriminate, celebrates diversity and bases all hiring and promotion decisions solely on talent and capability, without regard for any personal characteristics.
• All employee information is kept confidential according to General Data Protection Regulation (GDPR).