This role bridges security operations, engineering, and customer delivery, with a strong focus on Microsoft 365, Azure, and cloud-native security capabilities. You will play a key role in evolving Calligo’s managed and advisory security services, supporting customer implementations, and ensuring Microsoft security technologies are deployed and operated in line with best practice.

The role would be well suited to an individual with the ability to combine deep technical expertise with a service-led mindset, helping customers improve security maturity while strengthening Calligo’s internal capabilities.

Requirements

• Experience
  • Minimum 3 years’ experience in a security engineering, cloud security, or senior security operations role.
  • Demonstrable experience designing and implementing security controls within Microsoft 365 and/or Azure environments.
  • Experience supporting or delivering security services in a managed services or consulting context is desirable.
• Technical Knowledge
  • Strong hands-on knowledge of Microsoft security technologies, such as Microsoft Defender (Endpoint, Identity, Office 365, Cloud), Microsoft Sentinel, Microsoft Entra ID (identity protection, conditional access) & Microsoft Purview.
  • Solid understanding of cloud security concepts, identity and access management, endpoint security, and threat detection.
  • Experience integrating security tools with SIEM, SOC, or MDR services.
  • Practical scripting or automation experience (e.g. PowerShell) to support security operations and deployments.
  • Good working knowledge of Windows environments and Azure infrastructure.
• Certifications
  • Microsoft security certifications such as SC-200, SC-300, AZ-500 (or equivalent) are highly desirable.
  • Broader industry certifications (e.g. CISSP, CCSP) are beneficial but not essential.

Responsibilities

• Microsoft Security Engineering & Service Development
  • Design, implement, and optimise security solutions using the Microsoft security stack, including Microsoft 365 and Azure security capabilities.
  • Contribute to the development and standardisation of Calligo’s Microsoft-based managed security and advisory services.
  • Create and maintain reference architectures, technical standards, and deployment patterns aligned to Zero Trust and defence-in-depth principles.
  • Evaluate new Microsoft security features and services, supporting their introduction into Calligo’s service catalogue where appropriate.
• Security Operations & Integration
  • Support the integration of Microsoft security tooling into Calligo’s wider security operations, including alerting, investigation, and response workflows.
  • Develop and tune detection logic, policies, and configurations to improve signal quality and reduce noise.
  • Act as a technical escalation point for Microsoft-related security issues and incidents within the SecOps team.
  • Collaborate with partners and internal teams to ensure effective ingestion and use of Microsoft security telemetry.
• Customer Delivery & Advisory Support
  • Lead or support customer-facing security engagements involving Microsoft security technologies, including assessments, deployments, and service onboarding.
  • Provide technical input into customer security roadmaps, helping translate business and risk requirements into practical Microsoft-aligned solutions.
  • Work alongside account teams, vCISO, and advisory leads to support pre-sales activity and solution design where required.
  • Produce clear technical documentation and handover materials for both customers and internal operational teams.
• Automation, Improvement & Best Practice
  • Leverage automation and scripting to improve the deployment, configuration, and ongoing operation of Microsoft security services.
  • Continuously review and improve existing configurations and service delivery approaches to align with Microsoft and industry best practices.
  • Support continuous improvement initiatives across SecOps, Managed Services, and Cloud Operations.
• Internal Security & Compliance
  • Support the operation and improvement of Calligo’s internal Microsoft security controls and monitoring.
  • Assist with internal and external audit activities (e.g. ISO 27001, SOC), providing technical evidence related to Microsoft security platforms.
  • Ensure solutions and services align with Calligo’s security policies, risk appetite, and compliance obligations.

Benefits

• Training and development for career growth
• 25 Days annual leave, increasing with length of service
• 5% employer pension contribution, minimum 3% employee contribution
• Healthcare cover
• Life insurance
• Flexible working
• Paid time off for volunteering
• Enhanced maternity & paternity pay

About Calligo

Calligo transforms data into businesses’ most lucrative asset. We combine great minds in data science, privacy, security and engineering with leading machine learning, data analytics and cloud platforms to support the operational, customer-centric and revenue-generation aspirations of some of the world's most ambitious and progressive organizations.